Fan clutch loud when cold

A faulty fan clutch that leaves the fan permanently engaged will not only cause a noisy engine, but can also cause a decrease in performance. Thefan gets noisy when the engine is hot. This failure causes a loud noise to emanate from the engine and renders the vehicle unsafe to drive due to potential engine overhearting and fan clutch lock-up. radiator fan running high - I have the same issue as well. After more searching on the forums it looks like the Imperial 215157 is more like the original unit supplied by rover. Fan is always super loud. Three hours later it should spin freely if memory serves me correctly. Decrease in power, acceleration, and fuel efficiency. . Then you drive for a bit and the noise goes away. Check the bolt and washer on the center and be sure that it is tight. Nov 24, 2015 · loud fan clutch - 2000 tahoe 5. Browse Categories MAKE SURE THE COOLANT SYSTEM and ENGINE IS COLD! RAN THIS TEST IN A WELL VENTILATED AREA ONLY!Dec 04, 2010 · When the air flowing across the fan is cold the clutch free wheels so that the shaft is turning in the bearing. sounds like a airplane when first start up. It would only happen on a cold start up and rarely once the engine was warm. Over the years, fans can become broken, clutches can become damaged, and hardware can start to rust or stripped. Maybe because it was so old. And first minute of driving sounds like a - GMC 2005 Envoy question. would be Loud squealing noises when you let off the The likely symptoms of a failed or failing cooling fan clutch are the same whether the fan is thermal or inertial. I put a new one in my'72 and spinning by hand it won't even make a complete rotation cold. Apr 15, 2012 This is a video is to show you that the Dodge Ram Cummins Diesel engine doesn't have any load from the fan when the engine is cold. A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. Bad fan clutch ? Hot & Cold movement. Feb 15, 2010 · IIRC the fan clutch allows the fan to spin easily when the engine is cold, to aid in a faster warm up. Loud roar when I start driving. The clutch for A/C is just a little heavier duty, and is recommended. The viscous fluid thickens when engine is cold, thus the clutch is in full lock up. Re: Severe duty fan clutch noisy 05-18-03 02:09 AM - Post# 231471 In response to Just getting you back to the top! I am in need of a new fan clutch and want to hear if Hayden is a decent product VS. It sounds like the fan clutch is hung up and the fan is blowing a hurricane wind. The clutch is engaged when it senses heat from the radiator. Bracket Racing. And first minute of driving sounds like a - GMC 2005 Envoy question Let engine cold down does it make sense for the cooling fan clutch to be noisy when cold and quiet down when vehicle warms up ? Sign of time to replace? No noise if warm outside in summer , worse with cold weather . Cams & Valvetrain. flex fan. I have to reboot after the computer has been running for a while, then it will turn on with normal fan and operate fine. Today was the first day that I have had to turn the AC on in the truck and I noticed that the fan was very loud when the clutch engaged. Re: Fan Clutch how to test? the mechanical fan is filled with viscous fluid, so as long as you can turn it hot or cold, and feel resistance and not wobbling,you are ok. goes away when engine warms up. The fan clutch I got from bulletproof is never quite. Laptop Cooling Fan Very Loud. So, when the engine is cool or even when it is at a normal operating temperature, the fan clutch will partially disengage the engine’s radiator cooling fan (which is mechanically driven). Doesn't seem to be affecting performance and to be honest, it's been there for ages. Put a shroud on, a little better. The fan clutch will slow down shortly after startup as a result of a pumping action produced by a difference in speed between the shaft and clutch body. it seems to me as if the fan clutch always seems engaged, even at cold startup, under even part throttle, I can hear the fan roar as if it's engaged right from strtup. Fan Clutch Troubleshooting Summary. After just a couple minutes, the noise is gone. Yes as far as I know the fan will always spin with a clutch just slower when cold and faster when the engine gets hot. Apr 23, 2005 · Cold, the fan should freewheel quite a few revs when you shut it down. When too much heat is generated, the clutch allows the fan to rotate really fast to cool the engine faster. Likewise as temperatures move lower, the clutch will disengage reducing drag on the engine when the fan is not needed. Varies the fan speed with temperature of the air behind the radiator. The fan clutch then goes off when i take my foot off the gas. maybe ill try taking off my clutch fan while its still cold out. But the new fan clutch makes a loud roaring noise which is very annoying. He said it was the fan clutch and that I was fine and to ignore it. When I start up my truck it is loud, when I rev the engine it is louder, the fan clutch seems to never disengage. It is best to begin these steps with a cold engine. Symptoms of the Bad Fan Clutch Explained in Under 5 Minutes www. it's a pretty easy job to do with a fan clutch removal tool. 1968-2013 Full Size Vans - New Fan Clutch Roars! - Hi, Is it 'normal' for a replacement Hayden Fan Clutch for a '99 E-150/4. Squeeling sound when cold While the engine is cold, you should be able to turn the fan with your hand pretty easily. Watch the fan clutch while the engine is on, and if the clutch is moving on the shaft, this is a simple fix. extremely loud! The fan motor or dual shaft fan motor has bearings which are usually permanently lubricated. Oct 29, 2013 · I have a 2006 2500HD duramax auto. If it is not tight, re-tighten the center bolt. Too cold and they don't run well. This is totally normal. As temperatures rise and reach a set point temperature, the bi-metal coil engages the clutch and the fan spins, cooling the engine. Refer to Fan Clutch Replacement . Maintenance/Repairs. If I understand things right, the fan clutch does engage when the engine is cold to help warm up by putting resistance on the engine. It can indeed be the fan clutch. I figured it had to do with the clutch locking up the fan. I was told my fan clutch was bad on my 95 Chevy, so it was replaced, it now runs constantly. 89 240 230K I was told by a mechanic a number of years ago during cold start up I would get a loud noise from the engine as if someone had inserted a screwdriver into the blades of the radiator fan. They fixed it for $200. Occaisonally the viscous fan clutch will make a roaring noise when the engine is cold, the noise is present for about the first 1/4 mile then clears up. You'll need a 10mm and 12mm wrench. The thermal fan clutch is engaged on a cold startup because the fluid drains into the working area when the engine is shut off. Thought the fan was supposed to kick on when it reached a The 2006 Ford Explorer has 3 problems reported for loud cooling fan. My chevy never overheated prior to the new fan clutch being installed, EXCEPT when the plow was on, and even yet it only did so at highway (over 45mph) speed. Too hot and they burn up. Now that I've got my shiny new Cold Case radiator, the NEXT item to upgrade is my fan. I had a 1988 22R with the same fan clutch and it did not do this. It should rotate a We had Fan clutch problems about 6 months ago, when the engine light came on and i heared the fan really loud everytime i started the car. New fan clutch installed, fan runs constantly! when they are cold A noisy fan clutch can also be the culprit when your car is overheating. 3. The high pitch of my clutch fan blades will do nicely for pulling plenty Signs that a fan clutch is going bad include vibration, excessive fan noise at any speed, bad air conditioner performance at idle or low speed and failure to increase speed when the engine gets hot. A noisy fan clutch can also be the culprit when your car is overheating. May 03, 2008 · 89 240 230K I was told by a mechanic a number of years ago during cold start up I would get a loud noise from the engine as if someone had inserted a screwdriver into the blades of the radiator fan. I recently had a new fan clutch installed. Nov 16, 2006 · I seem to have an unusually noisy fan at cold start up. If you're mechanically inclined (It's a huge PITA), you can remove the fan and clutch and run the engine briefly to see if the noise has been eliminated. Once in a great while it fully engages when cold, and is I have narrowed it down to when the engine is cold and moisture seems to find its way into something. When engine bay temperatures are cold, the fan clutch is disconnected. My G56 and DMF is quiet so I don’t think it Another common symptom of a faulty fan clutch is excessively loud cooling and present at all times when the engine is cold and hot. Start the car (cold) with the hood open and note if the fan is turning, increase the engine RPM and note if the fan turns faster and the noise increases, if it does, first good indication, if it does not increase speed/noise, clutch is bad and needs to be replaced. Fan kicks on about 30 seconds after vehicle is started and is extremely loud. The first thing I noticed was how quiet the engine was without the fan running when cold. Fan running fast and when the heat is on cold air. 4L) in it replaced, I've noticed that the fan is super loud after a cold start. Next, with the engine off, give the fan blade a gentle spin. With a cold engine, I try to turn the fan blades looking for some resistance. fan clutch loud I just replaced fan clutch and water pump, at start up. Only $44 at Kragen so may give it a try. I figured it was something like that. The cooling fan will come on when the engine is cold and it will stay on the … Our 2011 Subaru Outback 3. If this loud squeeling sound upon cold start up now just once in a while. A viscous fan clutch contains a thick fluid that can leak from the unit. If you accelerate too hard it will set a check engine light condition for excessive fan speed. The noise on a cold start is the engine fast idle & the fan clutch engaging the fan for a minute or two. But if your clutch fan is engaging on a cold day, something isn't right. I have their oil cooler and oil filter, EGR,water pump, cylinder head, head studs upgrades and am a 5 star happy with all of those upgrades. If this burns out or fails, you’ll need to replace it . HAYDEN FAN CLUTCH -- Severe-Duty Thermal Design, Standard Rotation, Varies The Fan Speed With Temperature Of The Air Behind The Radiator, Engaged High Speed Operation Provides Maximum Cooling, Disengaged Low Speed Operation Provides Fuel Savings And Noise Reduction, Offers Greater Life Expectancy Than A Non-Thermal Clutch, Briefly Engaged At Cold Start-Up, Engages At About 170 Degrees Radiator Order Jeep Grand Cherokee Fan Clutch online today. Feb 10, 2017 the fan gets loud after about 15 minutes of driving. It hunts speed to keep engine temps within range. by Dan Ferrell . fan clutch seems fully engaged. Your vehicle's fan clutch is an often overlooked but important little part—it's engine is too loud, try popping the hood to prevent the sound from being muffled. I had a chevy truck that had unusually loud fan. Mike New Fan Clutch Installed, But Why Does It Run Loudly And Continuously Even In Cold Start Conditions. Dear Tom and Ray: I have a 1973 Oldsmobile 98 Regency. Fan Clutch Symptoms? How loud is yours? User Name: Remember Me? Its a video from a cold start, all the way to warm. We had Fan clutch problems about 6 months ago, when the engine light came on and i heared the fan really loud everytime i started the car. Your fan sounds likes it is working properly. The Bullet Proof Diesel Fan Clutch Adapter will allow you to convert your fan clutch from the electrical, computer controlled 6. It is controlled by the Engine Control Module (ECM) that regulates the clutch based on input from the coolant, ambient and transmission oil temps. Is your fan loud all the time, spinning at high speed along with the engine RPM's or is it pretty quiet? When dead cold, the fan clutch engages and you hear a A thermal fan clutch is engaged on a cold startup because the fluid drains into the working area when the engine is shut off. 6R, which we bought brand new back in Feb ’11 and only has 4k miles, seems to be having issues with the cooling fan. 3) Check for proper fan clutch operation - First, run the engine until operating temperature is reached. Rock Auto has it for $55 (GMB 9252090) Remove the fan and clutch from the top. then after a few minutes it slows down and the sound is not so loud from pulling air. A loud whooshing sound isn't necessarily an indication of failure unless it varies with engine RPM. 2, w/ 112k miles, Im hearing the most ear-piercing loud screeching sound which goes away after i rev the engine for a minute or so, and then, VOILA, it goes away. This fluids viscosity is measured in CST or centistokes and will wear over time. WHen you start it, you hear the FAN blades, not the clutch making noise. FanClutch. First thought was water pump but noise sounds closer to fan. Goes away after about 15 seconds. 2L (LL8), and P0480, for 5. I started with an old Mopar 7-blade steel fan (stock car days leftover) and the car ran hot immediately if I was stopped. 0L cooling fan assembly to the rugged, mechanical fan clutch found on the 1997 Ford 7. after a certain point, the noise goes all the way down, and it disappears. I have a 2001 Dodge Dakota with the 3. RE: Fan clutch noise IP: Logged Message: No, this is perfectly normal. Aug 26, 2008 · I'd bet it's your A/C clutch coming on. Airflow can be changed by increasing the action of the clutch or going to a steeper pitch fan and/or one with more blades. 2L to roar loudly (windy noise) at startup? It seems to spin fast & loudly at startup accelerating speeds cold and after warmup. i say clutch it up! cold weather • Simple design and lower parts count for easy installation and 79A9067 99067 DM On/Off Reman Fan Clutch On/Off FITZGERALD GLIDER DETROIT DIESEL i have a 2003 trailblazer, had problem with loud noise from clutch fan. Old motor threw a rod so I had engine replaced and I also had the fan clutch replaced due to wear. Like I was saying the new fan clutch has the fan engaged all the time, so I know the truck will not overheat. Normal. It is so loud I can't carry on a conversation while driving my 05 f 250. Jan 26, 2008 · It currently does not work, and at this point it isnt needed. 4L) in response to my AC not blowing cool air all the time. some parts stores have tool rental and loan services on that kind of stuff. If it rotates more than twice, the clutch is worn and needs replacing. Jun 10, 2005 · New Member. is this normal or does fan clutch need replaced Posted by vanjohn1 on Feb 26, 2011 Only an issue on that initial cold start and up to 30-35 (get out on the main road). Clutch fan: clutch difference between heavy duty model and severe duty? Discussion in ' Engine Topic ' started by gookc , Aug 28, 2012 . There are springs within the fan clutch that can wear out or corrode over the years. but nothing is actually there . 2010 Ford F150, Radiator fan seems to be running on high more than it should. Fan Clutch Solenoid issue; Page 1 of 2 1 2 Last. Loud Roaring Sound. If the Aug 22, 2018 · Fan was really loud. Since getting it replaced, I've noticed that the fan is super loud after a cold start. I changed the fan clutch already and the thermostat. When you rev the motor, you should be able to hear the clutch fan 'roar' up to speed slightly behind your engine speed. A stuck fan clutch will cause excessive, unnecessary drag on the engine, which can cause a drop in power, acceleration, and fuel efficiency, sometimes to a quite noticeable degree. When the fan clutch engages, it's pretty loud on any car with this set-up. If this is a external fan make sure that there's nothing obstructing the fins of the fan, as well as making sure the fins aren't rubbing against any case material, this could emit a loud whining sound. The fan/clutch won’t come out together as an assembly if the shroud is installed. It has a sensor that detects temperature around the engine and if it becomes too hot, the clutch engages the fan in motion to produce air that cools down the heat. As others have said, if the clutch fails, it usually fails in the locked position. The fan clutch is stiff when I go out to the car in the morning (stone cold engine) and is also just about as stiff after a 45 minute highway drive (just a little more loose). timing chain that is insanely loud at start-up(like the screw driver analogy you 3rd Gen Ram Tech - Why is my clutch fan fully engaged at cold start temp is normal or at least its not as loud as it is during the mornings. ask. Log in or Sign up. Mar 29, 2006 There's no sign of belt slippage, but the radiator cooling fan barely seems to be spinning. Hello, I recently had my fan clutch replaced on my 2005 F150 (5. I found THIS NOT TO BE NOT TRUE. (scary thought). no problem with cooling system, the dealership determined the clutch fan was going out. At idle, even a mechanical clutch fan engages and disengages to cool engines. I don't recommend Check the clutch fan. The engine fan is also not able to be freely spun at cold temperatures (checked in the morning when it was around 50 degrees outside and the truck was cool). I went back to the dealer and I then was told the fan clutch needed to be replaced 02 envoy, 6 cyl, loud wooshing noise when engine is cold. If it keeps running it’s a relay. It used to be that checking a thermal fan clutch was an easy matter since they all could be very easily locked into their Engaged Mode by simply moving the end of the bimetallic coil to another spot on the fan clutch assembly. The fan clutch should almost freewheel when the engine is cold. Feb 21, 2012 · It doesn't seem like a problem I was just curious if other people's trucks do this also or if maybe there is a clutch in the fan that is going bad or whatever. 3L (LM4), will set when the cooling fan relay is disconnected. I swapped out my fan clutch after work The fan clutch in my 2000 Tahoe 5. On this boot, the computer responds much more slowly than usual. To determine if the fan clutch is the problem, with the engune cold, spin the fan by hand. If it stops it’s the sensor. Stock Fan Clutch vs. The sound may be easily audible and present at all times when the engine is cold and hot. I have cold a/c the instant the If this solves the problem, set the fan clutch to be more aggressive. The clutch is basically "locked" when the engine is first started and is cold, meaning the fan speed is roughly 1 to 1 with the engine rpm. The air works great now. It worked fine but it sounded like a jet engine while the engine was cold and also at every start up whether it was hot or cold. Nov 26, 2018 · Replacement fan clutch [LOUD] Discovery - Technical Discussions DiscoWeb Message Boards Right now there's no difference in noise whether it's warm or cold. When the engine temperature reaches a preset temperature or if the engine has not been run for several hours, the fan "engages" and turns at the same speed as the engine. The thing that makes me wonder though is at highway speeds, the air coming through the radiator should be enough to cool your engine without the fan running. When dead cold, the fan clutch engages and you hear a roar for a few seconds Then the clutch starts to free wheel since it is not up to the temp it needs to stay engaged My 99 has run this way for the last 3 years and I stay nice and cool even in the 100+ heatFeb 14, 2010 · While the engine is cold, you should be able to turn the fan with your hand pretty easily. This 5. Related Parts Many people replace more than just the fan blades or fan clutch. Probably a stuck temp sensor. After the engine warmed up and the temp gauge read just above normal, I turned the temp sensor knob counter clock wise till the fan kicked on. New fan ($$$!) coming in next week. If this Chevrolet Trailblazer Cooling Fan Clutch May Fail Causing Noise and Check Engine Light - 198 reports. 2carpros. Excess fan noise at high speed is caused by the same problem, a seized fan clutch. I've read many of the fan clutch threads, and most failures, from what I can tell, involve the clutch fan no longer engaging when hot, the opposite of what seems to be the case here. Briefly engaged at cold start-up. If your truck's engine is running hotter than normal, the A/C fails to pump out cold air on idle, and there is leaking silicone fluid around the engine, chances are the clutch fan is busted. If you spin it, just a few blades should pass after you let go. fan clutch loud when coldHello, I recently had my fan clutch replaced on my 2005 F150 (5. I seem to have an unusually noisy fan at cold start up. Even kicks on when its a cooler day. I drove the car for its mid-winter excursion for about half an hour at speeds of 50/60 mph. I didn't tell them my suspicion, I just explained the noise. I have a 1997 chevy silverado 1500 z71. It seems like the fan clutch won’t disengage. For some reason when it gets fairly cold (below 40F?) in the computer room, if I start my computer up from a cold (heh) start something inside (I'm assuming a fan?) makes a GOD AWFUL grinding/whirring noise. It will also make a loud whirling sound as the engine is revved. Although the price of used Ferraris increased across the board after the release of the 430, the Ferrari 348 Spider is still a reasonably priced exotic car. You can be sure that customer will be singing their praises whenever the situa­tion arises. However, the key point is that you really should not hear the fan at all between a cold engine and a hot engine. Your fan might be spinning faster than required. normally the fan clutch in the mornings are engaged because the fluid in the clutch has settled down to the bottom. (Be careful revving it to test this, as that's how many a failed clutch has caused fan explosions. If it is happening when it is cold, the fan clutch must be failing. Jan 16, 2013 · Interesting because I also notice the loud fan when I start when it is cold. Could the fan clutch be bad. It does it when I take out my truck once a week to go to church on Sunday morning (yes it is a Sunday truck). Loud Roar, Howl or Whooooooooooo Noise Problems - Fan Clutch, Blower Motor or What??? 3 Answers My 2006 Ford Explorer makes a loud Howl, Roar or as I call it a Whooooo sound when I have the AC on and am sitting at an idle, and then go to accelerate. Fan clutch temp works off of the air temp going through the radiator, NOT the engine temp. It sounds like the fan clutch is hung up and the fan is blowing a hurricane Fan is alittle louder on a cold start standard GM across the boardRadiator Fan running hard (loud) even when cold. (Think: late 90s GM pickup truck) Damon , Dec 16, 2014 The first sign of failure, is less noise - especially on cold start up. Apparel, Hats & Shoes. Its just strange because that is the only symptom I have. Apr 02, 2014 · When the fan clutch goes bad it spins more, by hand. ) I've read many of the fan clutch threads, and most failures, from what I can tell, involve the clutch fan no longer engaging when hot, the opposite of what seems to be the case here. Check out free battery charging and engine diagnostic testing while you are in store. Ford Expedition Forum. com FREE DELIVERY possible on eligible purchases Yes I think its something like the air cooling fan. I've been able to track the noise vs. First, check out the evaporator fan blade in the freezer behind the back panel. A decrease in performance is another symptom of a bad or failing fan clutch. I may go to a clutch fan. heater or fan is on, you Following a cold start, the fluid must be distributed within the clutch by rotary motion, and it is partially engaged during this distribution. is this normal or does fan clutch need replaced Posted by vanjohn1 on Feb 26, 2011 There is no power loss when the engine is cold and the fan clutch is not engaged. it took almost 10 minutes from cold before it turned on. The air coming through the radiator heats the control that tightens up the fan clutch that the fan is mounted on. Your vehicle's fan clutch is an often overlooked but important little part—it's responsible for gauging the temperature of the air passing through the radiator and keeping the engine from overheating. Squeeling sound when cold IP: Logged Message: My dealer replaced the fan clutch and theMay 26, 2015 · If cooling fan clutch is previously fully engaged, then there will not be a noticeable change in cooling fan noise. If the fan blade clutch assembly free wheels with no drag, (revolves more than 5 times when spun by hand), replace the fan clutch. 10-04-04 06:43 PM - Post# 522329 In response to radiotek i got the HD clutch fan, its loud, but it adds to the engine noise so its kinda cool, sounds like a jet engine lol. It tightens up as the engine gets hot to allow better cooling. Hot, it should come to a halt within a few revs. Well the zj clutch fan definitely is loud. It's pretty noisy but manually switching off the fan does make it go away immediately. If not, AND you heard LOUD fan noises at 50+ MPH, your radiator, airflow or coolant flow is a problem. Jun 02, 2017 · Just had clutch fan replaced in my 97 expedition 2 days ago. Likewise as temperatures move lower, the clutch will disengage …Jan 26, 2008 · It currently does not work, and at this point it isnt needed. No overheating occurs obviously, as there is plenty of airflow. When the vehicle is left to idle on a hot day with the A/C on, it should "lock" the fan clutch within 3 minutes or so. If the fan rotates when you turn on the engine, or the fan does not work after four or five minutes when the engine reaches operating temperature, replace the clutch. Jan 8, 2016 Another common symptom of a faulty fan clutch is excessively loud cooling audible and present at all times when the engine is cold and hot. It only does it for about 2 minutes and then it goes away. 02 envoy, 6 cyl, loud wooshing noise when engine is cold. Subscribe I was thinking fan clutch, but I'm hoping that someone has had a similar issue with resolution. power loss easily, since the fan noise is loud enough to be heard in the cabin, with all the windows up and sunroof closed. Aug 18, 2012 · Laptop fan noisy when cold. When engine bay temperatures are cold, the fan clutch is disconnected. However, over several years, the lubrication will break down, causing the motor to become noisy. As the silicone absorbs heat conducted through the clutch hub, it expands, causing a sudden increase in fan speed. loud squeeling sound upon cold start up now that it's below 20º here in Wisconsin. Car Care. If I shut down the engine ht e crank stops quickly but the fan continues spinning but only makes a few turns before it too stops. landroverworld. The engine needs to operate at a set temperature, and if the fan runs constantly, it may run below the optimal temperature. See all problems of the 2002 Chevrolet Trailblazer . I really believe its coming from the fan/clutch somewhere. Mine was shot (could stop it with your fingers when its warmed up) so thought I'd upgrade to the Hayden. This is normal the fan usually spins at 10-20% even when nothing is stressing it (to get air flowing inside the heatpipes) The funny thing is that the laptop fan spinning at 100% is louder than a desktop 200mm fan spinning at full speedFeb 14, 2008 · fan clutch stiff all the time - new clutch, or new silicone? Cold, warm, or hot, I can't stop the fan by any means with the engine on. best thing to do is change the clutch to see if it makes a difference. by Allen Moore . Edit: when the air passing through the radiator starts to warm up, it starts locking up. Best Answer: Like they said, the clutch should engage when the radiator get hot. The fan clutch is the assembly that holds the radiator fan to the engine and makes it turn. But it is loud when I jam my foot into the Holley. So while in OKC I changed the Thermostat for a 185 to see if that helped and it didn't, I left OKC in Late Feburary in a cold rain and the fan clutch still stayed on, so while in Little Rock I changed the fan clutch again, before I headed down to the Rio Grand valley in Texas about 3 weeks ago and the fan clutch stayed on 98% of the time. Mine does not. Havent tried the newspaper trick yet but Im leaning towards it being the fan clutch because thats what the A/C will do if the fan clutch is bad. When the vehicle is cold the fan will basically spin at the same RPM as the engine due to the fact it's bolted to the water pump of Clutch fan squeal? SAVE CANCEL most times a fan clutch only feels loose if the bearings are worn out. If it spins with a fingertip when cold, it is shot. It had some resistance when I turned the fan while it was cold. Feb 14, 2010 Occaisonally the viscous fan clutch will make a roaring noise when the IIRC the fan clutch allows the fan to spin easily when the engine is cold, to aid in a . Answered! So while in OKC I changed the Thermostat for a 185 to see if that helped and it didn't, I left OKC in Late Feburary in a cold rain and the fan clutch still stayed on, so while in Little Rock I changed the fan clutch again, before I headed down to the Rio Grand valley in Texas about 3 weeks ago and the fan clutch stayed on 98% of the time. The fan clutch now will not disengage while driving there is always a loud roar as I accelerate and loss of power. My only comparrison to RWD layouts with attached fans (non electric) was my buddies mopar, and you really never heard the fan run unless the thing was hot. up vote 10 down vote favorite. Chevrolet Silverado 1999-2006: How to Replace Engine Fan Clutch. There have been many opinions with regards to testing the "fan clutch". I can drive 20 miles on the interstate, and on roads at 40 mph the fan will slowly engage itself. Likewise, a fan that is noisy or wobbly is likely ready for replacement. The fan clutch will slow down shortly after startup as result of a pumping action produced by a difference in While the engine is cold, you should be able to turn the fan with your hand pretty easily. The Clutch Is Moving Watch the fan clutch while the engine is on, and if the clutch is moving on the shaft, this is a simple fix. A thermal fan clutch is engaged on a cold startup because the fluid drains into the working area when the engine is shut off. It got fixed, with the water pump, for $1200 !! Just a few Cold room, grinding fan on startup? solved Fan makes loud grinding noise on solved Will the cpu liquid cooler freeze if the room temp is cold? Loud grinding noise on cold noot up caused by Failing fan clutch noise I can sometimes hear a loud (almost like a starter motor gear trying to start a running engine) type of sound while getting up to speed fan clutch easy to install cooling system sounds like fan noise clutch makes the fan engine hayden truck installed temperature wrench cold road stock air delco loud overheating replace Showing 1-8 of 86 reviews How to Test a Fan Clutch. Views: 13KFan Clutch Not Working Properly | Land Rover and Range www. What that something is I am not sure, I am assuming it is the clutch. Feb 20 What I thought was weird was that the fan was engaging on cold starts. . Features: When the engine is cold, the fan is disengaged, providing fuel economy and noise reduction. Page 1 of 3 1 2 3 Next > the temperature guage was all the way at the cold position, and fan clutch came on every time i hit the gas. Check to see how easy it spins when the car is cold (and off). It is like something is stuck open like as I described when you start a cold car the engine is really loud and as it warms up it gets quiter. This kit includes a new direct replacement fan, clutch, and all of the hardware needed to get it installed. Fan Clutch Trouble Shooting Ive been trying to nail down a persistent squeek and a strange and loud "howling noise" , i Typically, you'll hear the fan "roar" for a few seconds after the first cold engine start of the day. Doesn't matter if engine is cold. Most overt the counter manuals tell you when the engine is cold (vehicle off) the fan should turn easily 1 to 1 1/2 turns if the fan clutch is good, and with the vehicle warm (vehicle off) the fan will turn with more resistance. Currently, the fan engages itself to 100% at nearly all times except at high rpms or at highway speed. And Rod’s tech­nicians were heroes, fixing the truck properly without breaking the bank. So if your ambient air temp is cold, it is unlikely the fan clutch will come on until the engine gets pretty warm. The other standard test for a fan clutch is to compare the amount of spins it has on shutoff when it is cold, versus when it is hot. Custom Fan Blades Even with all the fan blades we stock there are unique situations. Then when it is cooled down, it loosens the clutch. 55 people found If you have a clutch fan the clutch is probably bad. As the Jan 8, 2016 Another common symptom of a faulty fan clutch is excessively loud cooling audible and present at all times when the engine is cold and hot. I have a 2012 Ford F150 Fx4. Diesels run hot. On very cold days, when I first turn my computer on, the fan runs on its highest setting for 20 seconds. When the air flow warms-up the clutch begins to lock and hence less shaft rotation in the bearing so it quiets. If it doesnt turn easily by hand, the clutch is probably bad. I swapped out my fan clutch after work The fan clutch can slip, which would prevent the fan from cooling the engine at low speeds. "Engagement" of the fan provides increased airflow through …Sep 14, 2011 · Lube Active Member. This allows for a faster warmup and saves gas. New fan clutch installed, fan runs constantly! when they are cold I recently had my fan clutch replaced on my 2005 F150 (5. after I've been driving it for a while. maybe your sensor is a little faulty. Mine does start spinning at cold start up. Now I researched this the last couple days and I seem to be seeing some conflicting info on how to know if your fan clutch is bad. The fan clutch will slow down shortly after startup as a result of a pumping action produced by a difference in speed between the shaft and the body of the clutch. The heater 2013 fx4. The new clutch had a lot more resistance. If the bearing is failing there will be noise. On a thermal clutch, as the engine heats up and the element becomes warm, the pivot arm inside the fan clutch rotates and allows the silicon to flow thru a series of circular channels allowing the fan to The original clutch seemed OK. Following a cold start, the fluid must be distributed within the clutch by rotary motion, and it is partially engaged during this distribution. Important DTC P1482, for 4. 1993 mazda mpv, by the way. It seems as if it gets warmed up and stops. Cold, warm, or hot, I can't stop the fan by any means with the engine on. Mine only does it when towing in the mountains for a short time. as the original clutch was, I was a little worried it might be louder. The last time it happened I got flustered and changed the fan switch and then the clutch. On a cool morning the fan should make a racket for a few seconds at least. The Ford Explorer fan clutch is responsible for the performance of the engine cooling fan. The fan clutch …Re: Noisy fan clutch Aug 08 2016, 12:44pm make sure the airflow thru the radiator is not restricted. I know that the fan blows with the turn of the motor, this causes the fan noise to affect the overall sound of the truck, it distracts from the flowmaster i just put on it, what is the best way to get rid of that loud fan. If you are hearing a whine or screeching, the clutch bearing is likely seizing. If your Dodge Cummins' radiator fan stops freewheeling, it's likely to be a problem with the fan clutch. Every morning as I start driving down the road, the fan speed seems to be linked to my engine RPMs. Chevrolet Trailblazer Cooling Fan Clutch May Fail Causing Noise and Check Engine Light - 198 reports. Just like other components exposed to heat and pressure, the Honda fan clutch will eventually wear out, so you must take proper care of your fan clutch. Also DONT try this with the engine running. Is your fan loud all the time, spinning at high speed along with the engine RPM's or is it pretty quiet? When dead cold, the fan clutch engages and you hear a If the individual accessories (alternator, a/c clutch, idler/tensioner pulleys) can be ruled out, the fan clutch is where I'd check next. The difference between a cold start and warm start is a cold start is when its sat over night or the engine is cold. It normally takes 350 to 800 miles to shut off. It's important to check the drive belt for wear and glazing. Is this normal?Since the change, the fan or fan clutch makes a very loud howling noise when the car is first started cold, it doesn't do it at idle, but when I start to drive it does it under acceleration. They have oil in them and when it's hotter it frees the fan up. I could have done it faster if I had a proper tool for holding the pulley. There is a fan noise coming from my engine compartment that is really loud. com/articles/fan-clutch-symptomsApr 6, 2018 When a fan clutch goes bad there can be is a loud roar Attached to the engine's water pump a fan clutch can go bad in one of two ways. One of the most common signs that the fan clutch is going bad is an excessively loud noise coming from the cooling fan. fan clutch loud when cold Interesting topic. But get it good and hot, and it should snap to a stop within 2-3 revs. Bob B This failure mode is difficult to detect in hot weather, as it could be hot enough to cause the fan to engage much of the time in city driving. Well, the fan is on a clutch that always has some tension. The fan clutch on this particular model has a long history of failure, repair mechanic has replaced many of these units. The clutch partially disengages the cooling fan when the engine is cold, making the fan turn at a low speed. Unplug the connector to the temp sensor. There is no electric cooling fan, which are quieter, but not great if you're in the desert. I ASS-U-MEd that the shop knew what they were doing, and the guy told me it was just loud because it was a new fan Fan clutch not disengaging. Search Fixya. Replace it with an OEM clutch from Mopar. I put a new one in my'72 and spinning by hand it won't even make a complete rotation cold. I swapped out my fan clutch after work The fan clutch was a preferable repair from a cost standpoint. This can cause bearing damage, radiator damage if the blades flex too far, or even shatter a plastic fan. If fan rotation is rough or noisy, or the fan fails to turn, the unit is worn out and needs replacement. Every time I turn on the 97' Rodeo 3. When the engine is cool and the a/c is on the computer will send the signal to turn the internal fan clutch heating element on. Extremely Loud Fan /Radiator May 31 2011, 7:05pm harper wrote: i think it is the fan clutch kicking in. It was extremely loud in the parking deck! As I drive down the levels of the parking deck, you can hear I was told my fan clutch was bad on my 95 Chevy, so it was replaced, it now runs constantly. How to test a fan clutch - YouTube www. It will be loud when you first start, especially if cold (winter), as it takes a little bit for the fan clutch to "warm up" and disengage when its not needed. Supposedly it’s supposed to spin freely. Dealer says new fan clutches sound noisier and it will get quieter. is this normal or does fan clutch need replaced Fan clutches for Envoys and Trailblazer are a problem, they go out all the time. Went to a Derale flex fan, kept the shroud and it helped quite a bit when creeping along. Normally you hear a loud whoosh from the fan. i have an 01 and mine is going bad i believe and it sounds like this. org › Technical Discussions › LR3Mar 15, 2016 · Earing2008 Active Member. com/youtube?q=fan+clutch+loud+when+cold&v=cOXcrbQRDWU Sep 3, 2014 Description. Disengaged (low speed) operation provides fuel savings and noise reduction. Loosen the 4 12mm nuts holding the clutch first and remove it. Most fan clutches fail locked up tight. SYMPTOM SUMMARY A loud squeal is produced when the A/C 12 Comments on "Loud Squeal When Air Conditioning Turned Can a bad cooling fan clutch cause the belt to The fan clutch is an automatic device that is often used in a vehicle’s cooling system. Aug 23, 2015 · I swapped out my fan clutch after work before dinner. when it starts rotating it gives loud noise as if something is struck inside. have any of you experianced the fan clutch not slipping while the engine is bone cold? mine will blow like a hurricane for a mile or two when i first very loud fan when cold?????? - Diesel Place : Chevrolet and GMC Diesel Truck Forums Signs that a fan clutch is going bad include vibration, excessive fan noise at any speed, bad air conditioner performance at idle or low speed and failure to increase speed when the engine gets hot. 3L goes on as soon as i hit the gas, is this normal? The fan is quiet at idle, but as soon as i hit the gas it goes on, and its a loud fan. Air Filters & Cold Air Kits. Re: Clutch fan vs. Loud Fan The fan in my truck stays on for way too long, it overpowers the engine and exhaust (cherry bomb dumped mind you), and makes me loose a ton of power. As temperatures rise and reach a set point temperature, the bi-metal coil engages the Nov 30, 2011 hey guys, when I first start the truck and drive for the first 2 miles the clutch fan is loud as hell. When the engine is started (cold start) the clutch should be "released" alowing the engine to warm up, you may see the fan spin ,this is ok as its drag from the spinning water pump alows it to spin slowly. What I thought was weird was that the fan was Cooling fan is always on, even runs when engine is cold. have any of you experianced the fan clutch not slipping while the engine is bone cold? mine will blow like a hurricane for a mile or two when i first very loud fan when cold?????? - Diesel Place : Chevrolet and GMC Diesel Truck Forums The cooling fan is bolted to what is called the fan's clutch. Until that happens, the fan is solidly connected to the engine, and runs at full speed. Thats the usual operation of a fan clutch. With the engine off, and the fan clutch stationary, the oil pools at the low spot and so if you turn the fan by hand, there is some resistance - when the engine starts, the centrifugal force redistributes the oil within the first minute or two of engine operation - typically you can hear this - the fan is quite loud when the engine is first VOLVO TROPICAL COOLING FAN CLUTCH INFO UPDATED: January 2, And in areas that get extra cold in the winter, an 82C might promote slower warm-ups. How to Test a Fan Clutch. Cameras. Every good fan clutch I have had does this. The loud clunk is un-nerving, but normal. fan clutch loud I just replaced fan clutch and water pump, at start up. Engaged (high speed) operation provides maximum cooling. is another symptom of a bad or failing fan clutch. This results in loss of engine power, reduced fuel mileage, and a sound like there is a jet engine under the hood when accelerating. One thing most wrenches can agree upon is that if the thing is leaking, or the bearings have play in them then the thing is bad. 1. Thermal Fan Clutch. Free Same Day Store Pickup. A Nov 16, 2006 · I seem to have an unusually noisy fan at cold start up. Forums > Ford Expedition Forum > 3rd Gen - 2007 - 2017 > Roaring clutch fan when cold? a 747 aircraft ready for takeoff. Fan Clutch will fail, causing the cooling fan to be locked on. 0 motor. I've been able to track the noise vs. If the fan ran at high all the time, the engine would cool too much. 3L Discussion in 'Engine & Drivetrain' started by Walt, Nov 18, 2015. So it will be loud as heck and pull an enormous amount of air through and probably improve low speed cooling but at the expense of noise and poor fuel economy. 3) Check for proper fan clutch operation. A non themostatically controled fan spins all the time regardless of engine temperature. Throughout the day, I have not notice this sound. When cold, the clutch freewheels, causing the fan to rotate slowly. (Think: late 90s GM pickup truck) Damon , Dec 16, 2014 IN laymans terms, a thermal fan clutch only turns on the fan when the engine is hot. Or the drive can be seized, which can be noisy as well as waste engine power because its turning when not required. Mar 29, 2006 When the engine is cold, the clutch is essentially disengaged, which is why the fan runs at its slowest compared to the engine's speed. it has never done this before. ZJ heavy duty, but not extreme duty. Cold (after a bit of warmup since the juices in there do need to get moving) it should freewheel a bit when you shut down. As the engine warms up, the air flowing to the fan assembly This mode causes the silicone fluid inside the fan clutch to move from one chamber to another, thus causing the fan clutch to lock up and turn close to engine RPM speed. Thermostat showed the temp in the 55/60 celsius range. Ryan rbattelle If you have it set to the cold side you will get a clunk of the blend door slamming back and the ac clutch kicking on. It's easy to overlook but a bad clutch fan will cause overheating in stop & go traffic, while you're idling or out on the trail at low speeds. First, run the engine until operating temperature is reached. Interesting because I also notice the loud fan when I start when it is cold. Diagnosing a faulty viscous cooling fan clutch When the 1995 SL500 is cold, and it is cold in Cleveland Ohio today, 20 degrees, the fan can be rotated with very little effort. If the fan clutch is fully engaged all the time, the technician should replace it. 0 Resto 1979-1993 Mustang replacement fan & clutch kit is perfect for restoring your Fox Body's 5. You still need a fan clutch. It got fixed, with the water pump, for $1200 !! Just a few Fan Clutch Symptoms? How loud is yours? User Name: Remember Me? Its a video from a cold start, all the way to warm. I have to reboot after the computer has been running for a while, then it …Dec 14, 2008 · As for my wife's 2003 Envoy, I did some more tests, when engine warms up, the noise quiet down to nothing as the fan speeds up, if I slow down the fan manually, (just stoping it with my hand wearing gloves), the noise comes back big time, when I let the fan go, it speeds up and noise goes away, so it is definitely fan clutch. The next time you’re driving about 50 mph (80 km/h) or higher, take note of how the fan sounds. Loud Cooling Fan. The Ford Explorer fan clutch is responsible for the performance of the engine cooling fan. This mode is the one that provides the maximum cooling effect by pulling the most air across the radiator and A/C Condenser. Is your air conditioner making a loud, annoying noise? 6 Loud Air Conditioning Noises and Their Causes. Decrease in power, acceleration, and fuel efficiency. Cold, the fan should freewheel quite a few revs when you shut it down. Jan 25, 2016 · It will be loud when you first start, especially if cold (winter), as it takes a little bit for the fan clutch to "warm up" and disengage when its not needed. loud meaning the cfm is very high. Should fan clutch hold when cold? If this is your first visit, be sure to check out the FAQ by clicking the link above. Apr 28, 2008 He said it was the fan clutch and that I was fine and to ignore it. That is why there is alot of fan noise after a cold start, regardless of outside temperature. Fan and Fan Clutch. When the car's running cold, there's a very quiet knocking noise which disappears when I push in the clutch. When the fan clutch goes bad it spins more, by hand. Oct 30, 2017 · When a fan clutch binds, or locks up, the air passing through it can produce a gentle roar that’s audible from inside the cabin of the vehicle. When it is cold the clutch disengages the fan. if not then take it back out and get a refund. Laptop fan making very loud noise. Sorta fail-safe mode. But too noisy to hear radio or phone, and have to really press hard at 10,20 miles. Fan clutch making loud noise with increase of RPMs It will be loud when you first start, especially if cold (winter), as it takes a little bit for the fan clutch to "warm up" and disengage when its not needed. Standard Duty Thermal Fan Clutch; The fan clutch is basically the part of your vehicle's cooling system that powers up the fan blades. It should spin freely for at least one revolution when the engine is cold. With the engine off, and the fan clutch stationary, the oil pools at the low spot and so if you turn the fan by hand, there is some resistance - when the engine starts, the centrifugal force redistributes the oil within the first minute or two of engine operation - typically you can hear this - the fan is quite loud when the engine is first A seized fan clutch that rotates at the same rpm as the water pump shaft will create a roaring noise. I read the test about trying to spin the fan when it is cold. A faulty fan clutch that leaves the fan permanently engaged will not only cause a noisy engine, but can also cause a The next day, and for a couple of weeks after, the fan motor was loud upon start up, but no where near as loud as it had been, and settles down very soon after, before I even leave the garage, but does have what I would call a dragging sound for about the same 1/4 mile (feels like the truck doesn't have the power), but it isn't as loud. even when the engine gets hot you shouldn't hear much noise from the fan. Also stays on when driving down the highway. The ACC turns on the a/c at startup if it isn't real cold which causes the fan to come on. The engine overheating when there is no problem with the coolant, thermostat, or the radiator likely means the fan itself is the issue. The HD clutch will "roar" the fan quite a bit when it's dead-cold, but should quiet down considerably after you drive it a mile or so. How to Troubleshoot the Fan Clutch in a Ford Explorer. this means you need to replace it. Try turning it by hand. If this happens, replace the dual shaft fan motor. This would go into Cooling. Q-Even though a car`s cooling system is completely sealed, auto mechanics always advise to flush it every two years. Greater life expectancy than a non-thermal clutch. Can your fan clutch fail, so it always operates? It's been roaring, noisy as hell since yesterday. As the engine warms up, the air flowing to the fan assembly becomes hotter. Easy to use parts catalog. Activity that’s louder than normal may indicate binding. 22 and we have had a cold It sounds like the magnetic clutch engaging the A/C compressor with a fan sound mixed in. Another sign the engine fan is loose is oil coming out from the clutch hub. How to Troubleshoot a Noisy Air Conditioner Clutch you should hear or feel nothing when the air conditioner is working except the cold air coming from your car Most fan clutches fail locked up tight. The 1990 Ford Ranger fan clutch is a silicone-filled, turbine mechanism. When the idle speed is lowered by the computer the fan speed is slowed down ,thus amount of noise is lowered. No expert as well, but if your fan is loud, it only means that its spinning really fast. Could also be a stuck relay, but I’m not a Subaru expert. Ken Re: Severe duty fan clutch noisy 05-18-03 02:09 AM - Post# 231471 In response to Just getting you back to the top! I am in need of a new fan clutch and want to hear if Hayden is a decent product VS. The fan in front of the radiator is the AC condenser fan, and completely separate from the engine cooling fan. The original Ford Fan Clutch was relatively quiet. as the vehicle runs for a bit the fluis should distribute, and the loud noise will go away. If you think your vehicle is not operating properly,have the engine scanned for any failure codes. Keep an eye on the temperature gauge indicator on the instrument panel. Average failure mileage is 71,100 miles. Re: loud at cold Post by herbzford » Wed Sep 29, 2010 9:28 am Its most likely the mechanical fan running on start up, once it warms up a bit it should shut off. If the refrigerator is noisy or loud, especially when one of the doors are opened, either the evaporator or condenser fan blade may be at fault. 02 envoy, 6 cyl, loud wooshing noise when engine is cold. I can't think of any mechanisms that would cause the clutch to be always engaged other than the silicone becoming more viscous with time, to the point where it is no longer returned to the reservoir. The idea of a "clutched" fan is rpm related and not temperature driven as some members suggest. Total time was 30 minutes. In cold weather the fan makes a noise like the engine is racing but rpm's are normal. May 02, 2006 · it seems to me as if the fan clutch always seems engaged, even at cold startup, under even part throttle, I can hear the fan roar as if it's engaged right from strtup. Typically on the bottom of the radiator. This is because it takes a few seconds for the fan clutch to disengage when cold. The fan clutch on this particular model has a long history of failure, repair mechanic has replaced many of these units. REMOVE. When the engine gets warm it starts to lock up. GM uses 5 and 7 blade asymmetric fans that DO NOT A fan clutch is a thermostatic engine cooling fan that can freewheel at low temperatures when cooling is not needed, allowing the engine to warm up faster, relieving unnecessary load on the engine. the fan speed. Nov 16, 2006 · I seem to have an unusually noisy fan at cold start up. If you hear the rush of air from your fan while the engine is cold, there's a good chance the clutch is shot. Dear Tom and Ray: I have a 1973 Oldsmobile 98 Regency. When the engine is cold, the clutch is essentially disengaged, which is why the fan runs at its slowest compared to the engine's speed. Buy Motorcraft YB3041 Fan Clutch: Thermals - Amazon. The fan clutch will slow down shortly after startup as result of a pumping action produced by a difference in speed between the shaft and the body of a clutch. Ive tried turning the fan when the engine is cold and it turns fairly easily but has enough resistance that it wont "free spin" when I let it go. This is how my Grand Cherokee V8 sounds before the fan clutch winds out after a cold start. Page 1 of 2 1 2 Next > Interesting topic. I removed my original fan and clutch and installed a Flex Fan with a spacer, it really works well. Fan was really loud. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. Because these fans are driven by the crankshaft. They told me the same thing, "fan clutch". A thermal fan clutch is engaged on a cold startup because the fluid drains into the working area when the engine is shut off. It just once in a while. it's normal when it's stone cold. Ferrari 348 Primer. In cold weather the fan makes a noise like the engine is racing but rpm's are normal. Jump to page: Now when I first crank the truck (cold), the fan turns and pulls a lot of air, until air pressure Fan clutch replaced and now car sounds very noisy, when accelerating and seems to drag at 10,20,30 miles. 3L diesel. Fan clutch making loud noise with increase of RPMs When the engine is cold, the clutch is essentially disengaged, which is why the fan runs at its slowest compared to the engine's speed. suggested i replace it also since the radiator was out, best to replace the water pump First I replaced my fan clutch on my 05 Xterra with a cheaper aftermarket clutch. You DID replace the radiator? I would say this is probably a lack of coolant circulation in the engine…due to a restriction more than a fan clutch issue. 9 V6 and a 5 speed manual, 124,000 miles on it. com can custom make blades to your requirements, keeping your trucks making money for you. Its in the 20s here at night and it On very cold days, when I first turn my computer on, the fan runs on its highest setting for 20 seconds. Why fan is making loud noise when it rotates. It's only loud for a few minutes when the car is cold, once the coolant loosen up and travels easily (due to the car warming up), the fan disengages. « Read the previous 20 complaints. Batteries & Accessories. The clutch is engaged when it senses heat from the radiator. A warm start is when the engine has been ran shut off and restarted. is this normal or does fan clutch …Jul 31, 2008 · There is no power loss when the engine is cold and the fan clutch is not engaged. and the guy told me it was just loud because it was a new fan clutch, and Re: Noisy fan clutch Aug 08 2016, 12:44pm make sure the airflow thru the radiator is not restricted. mercury. I have a 2006 2500HD duramax auto. Helpful information and resources on Kubota tractors from SSB Tractor, a leading provider of tractor parts, manuals, implements and toys Nov 16, 2006 · I seem to have an unusually noisy fan at cold start up. The damn thing sounds like a new car. You may have to register before you can post: click the register link above to proceed. continues to run high for about three or four blocks. A Florida Tech Explains. Hi - just threw in a new fan clutch in my D1 - Hayden 2786 Heavy Duty, and wow is it loud. This occurs whether the A/C is on, whether it's a cold start, or a warm start. The clutch disengages as the air temperature decreases, closing the valve and allowing the silicone fluid to be pumped back into the reservoir