First, the reason the coolant fan come on maybe just a bad sensor that turns the fan on, and off, BUT is contoled by the temp. Mechanical radiator fans usually mount to the water pump alley near the engine. But as contradictory as... Summer Summer is a great time for a road trip, but often travelers like bringing all the conveniences of home along, in the form of an RV. When I start up my truck on a cold morning, whether I let the engine warm up first or not, the engine makes a loud fan noise that gets louder as the engine RPMs increase, like the fan clutch, if there is one, that is not releaseing. guides, Check cars for recalls, common issues & maintenance If the vehicle is starting fine now and acceleration is the only problem, it is possible that a trouble code... Hi there. Unless there is an electrical issue, it may stay on all the time until it drains the battery. Radiator fan comes on when engine is cold. If the engine's warm when you start it, then the fan might kick in immediately - this is because the coolant heat will be concentrated at the top of the engine - due to lack of pump circulation - which is where the coolant temperature sensor's located. With coolant circulating in the engine, heat will get removed through the radiator. Does anyone know what the 2nd,...Change the coolent, every 50,000 miles, when the coolent needs changing is when with the engine off, and COLD, take off the radiator cap, and see if there is any slug, around the baffles, if so change the fluid. that model, very likely. If you jounce the suspension and have an assistant listen near the top of each spring tower you can sometimes hear the clunk noise, albeit the noise will... Hello, and thank you for writing in. Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing. Problem is.. Waited for it to cool off then drove home with no problem at all. Also Know, does radiator fan affect AC? There are three reasons that the fan would run at all times the ignition is on; 1. Valve cover gasket leaks are located by visual inspection and are usually one of the easier leaks to confirm the source of, since they are high up on the engine. Also the radiator fan comes on, and then the car don't start. Content will be removed if CarGurus becomes aware that it violates our policies. A slow coolant leak may leave a trail of dried coolant, but the level may not be enough to cause overheating at the moment. Please see our. When you're driving, air flows through the car radiator to keep your engine a normal temperature. Radiator fans comes on, but car dont start. The radiator fan turns on at cold startup. Hi there. This cycles on and off for about a few minutes. The radiator fan may run up to five minutes and sometimes longer. 2. The trigger is the thermostat in the radiator of your vehicle. So, do not worry if the fan doesn’t immediately start working. Top Answer. even when first started after sitting all night. BUT sometimes th... A few weeks ago, I hit a large bump and the icon for check engine came on. © cooling fan stays on after engine is shut off? run from the time i turn the truck on to the time I shut it off. The Toyota Solara uses a cable type window regulator. a/c stays on 1 Answer. They temperature gage not reading? Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range. A low coolant level can affect your air condition when the weather warms up; having a coolant concern corrected before summer can avoid possible air conditioner concerns. Made with ♥ in Silicon Valley. Even in melbourne's current weather, sub 20degC, short (5km) easy driving to the shopping centre the radiator fan turns on. 2CEXPT … The knock sensor's purpose is to detect the sounds of pre-ignition in a running engine and convert it to a signal for the electronic control unit (ECU) so... Teddy Leung / Shutterstock.com The whole idea of a PZEV (that is, a partial zero-emissions vehicle), seems paradoxical. Today, light popped back Coolant levels are at max cold level. No. Optimize fleet uptime and compliance via mobile vehicle repairs, Partner with us to simplify and scale fleet maintenance, Over 25,000 topics, from beginner tips to technical This type of radiator fan is controlled by a thermal fan clutch that senses radiator heat. The cooling system thermostat is designed to quickly bring the engine up to operating temperature. my cooling fan stays on for several minutes after engine is shut off? I suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts. Visually check the fan if you don’t hear its noise. The engine control computer thinks the engine is running hot. When the engine is cold, the thermostat is closed except for a small bypass flow so that the thermostat experiences changes to the coolant temperature as the engine warms up. Please refer to CarGurus Terms of Use. Here is the explanation why it comes on with the AC:" The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. Fan kicks on about 30 seconds after vehicle is started and is extremely loud. It may be stuck open. Then, the fan should come on. Small cars typically have stacked AC and engine radiators cooled by a single fan. technicians, Trusted mechanics, rated by thousands of happy car Wiki User Answered . While we can not advise you to buy the car or not, you should do some... Hello. Search Chevrolet Silverado 1500 Questions. The cooling fan on while the engine is cold could be normal if the A/C is on. The gauge stays on cold, truck got boiling hot on a short 2 mile drive. Another possibility is the window motor itself. A low coolant level can affect your air condition when the weather warms … As engine temperature rises to a specific threshold, the switch is activated powering on the coolant fan. Engine Cooling. Cooling Fan. Does anyone know what the problem could be? temperature gage not reading? Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Your head is in the right place about inspecting the vehicle and doing some research on it. Even kicks on when its a cooler day. Thanks for writing in today about the issue with your 91 Acura Integra. my cooling fan stays on for several minutes after engine is shut off? 2008 track model with about 18,000km. 2011 Chevrolet Silverado 1500 LT 4WD-Maintenance & Repair. Before getting too far into it, I always check to see if there is any aftermarket equipment such as an aftermarket radio. It is what sends the signal for the fan. Asked by Wiki User. If the coolant level is low this will affect the operating temperature of the engine and heater as well. On older vehicle models, just wait about 15 to 20 minutes for the engine to reach operating temperature. Why does the Electric cooling fan comes on when engine is cold? The built-in clutch will also be smart enough to rotate when it is hot in the car, being able to detect the temperature and when to operate. Stays On. 6 Posts . Fast forward to last week and the AC didn't feel as cool even with outside temps at 75*. Also stays on when driving down the highway. That depends on the car. Why radiator fan not work at the same times when engine running [ 4 Answers ] Cold radiator [ 0 Answers ] Not to sure if the TRV is on the Return instead of the Flow as flow pipe is cold, but the Return pipe is hot OR The Radiator and the flow pipe is cold as the TRV on the flow is broken Even in the morning when I start the car the fan comes on, what could be the problem? But if you stop, for example in a traffic jam, your engine has to use an electric cooling fan to force air through the radiator. I read that in a GMC manual. My radiator fans are all out off whack (simply put). Is the climate control set to defrost on the windshield? Monday, August 1st, 2011 AT 5:25 PM. However, the radiator fan does not always start spinning on ignition. When the temperature exceeds a specific value -- usually 215 degrees Fahrenheit -- the computer will turn the fan … Radiator fan comes on even when engin is cold. It just does. To check the temperature at which the fan comes on, turn the A/C off and keep the engine running until it reaches normal operating temperature. © 2021 CarGurus, Inc., All Rights Reserved. ... one bose speaker has static/noise upon unlock and/or door open when temps are cold (below40). Do you. 7 8 9. Radiator Fan Cost. cooling fan stays on after engine is shut off? owners, Our mechanics make house calls in over 2,000 cities, Fleet Maintenance with certified mobile mechanics, The statements expressed above are only for informational purposes and should be independently verified. document.write(new Date().getFullYear()) problem could be? Turning AC off doesnt stop fans Only turning off the truck stops them. If the coolant temperature sensor is damaged or the wiring to it is shorted this will cause the fan to run . Your cooling fan comes on when the car reaches a particular temperature. This winter thermostat kept sticking so I had it replaced with new thermostat. It is not constant on, it runs at high speed (full blast) for about 3 seconds and then off. Engine coolant is directed by the thermostat to the inlet of the circulating pump and is returned directly to the engine, bypassing the radiator. Ask O'bama, it's his company. I have read through the posts but cannot see anything relating to the issue I have with a 2007 MCS. The computer that runs both sides of the automatic seat belts is located under the passenger side seat. The motor mounts when damaged or worn out can cause serious vibrations, but it is highly unlikely that they are causing the engine to run rough to the point it want to stall. Thought the fan was supposed to kick on when it reached a certain temperature then goes off once the temp drops. The ECU signals the radiator fan to work at the precise time. The radiator fan comes on when the engine is cold, even when first started after sitting all night. That will make the Alternator motor to drag the Alternator pulley. Radiator fan comes on when engine is cold. On … If you suspect the starter motor, I would never recommend replacing a part such as this from the junk yard. is it safe to drive the truck? If the fan does not come on, something in the control circuit is defective. On a cold engine. 2011 Chevrolet Silverado 1500 LT 4WD-Maintenance & Repair. 1 Answer. Electric . Ok. There is a fault code set in the engine computer that will cause it to operate in a failure mode in that it turns the fan on to be sure the engine will be cooled. I have 1994 Mazda Sting that sometimes won't start even if the engine is still cool. If so, this still engages the ac compressor and turns the radiator fans on. costs, Hand-picked, community-rated professionals, Explore nationwide job opportunities for automotive After I shut the truck off for the night, light went out. The fan is temperature-controlled to make sure that the engine … Now, what that means is that the car might be getting too hot too quickly if you feel that the fan is coming on too soon. Is this normal? It's nothing to worry about. The radiator fan comes on when the engine is cold, even when first started after sitting all night. After sensing the heat temperature, the radiator fan turns on when the engine is running at a higher temperature. 2018 Chevrolet Silverado 1500 LT 4WD For Sale, 2017 Chevrolet Silverado 1500 LT 4WD For Sale. Fans only kick on when AC is ON. If the coolant level is low this will affect the operating temperature of the engine and heater as well. Gauge still stays on cold. It is longer at colder temperature (outside/engine). is it safe to drive the truck? Most of these radiator fans have a built-in clutch, allowing the fan to idle when the engine is cold, saving some energy and power for an efficient mechanism. Discussion Starter • #1 • Nov 11, 2010. Does anyone know what the problem could be? The guy said it could be air bubble or trash in the radiator. Turned my car off and the a/c fan kept running. Usually notice when I've parked the car, ready to turn off engine. have the same problem? What is the current coolant level? Answer . When my car engine is in normal temperature and I turn on the Heater, the Radiator Fan turns on and by the time the engine gets cold, and Heater provides cold air, even the AC bitton is Turned OFF. 2015 Chevrolet Silverado 1500 LS Crew Cab RWD. The length of time cycling on and off seems to correlate to the temperature. The cooling fan should come on immediately or within the next couple of minutes. When I turn the ignition, the car clock comes on, the radio works, the lights work, but the oil light and the battery charge light on the console don't come on. There are a few common issues on this vehicle. You’d think it’d have to either be zero-emissions or not in the category at all. 752 Great Deals out of 38,093 listings starting at, 2,862 Great Deals out of 124,365 listings starting at, 290 Great Deals out of 14,257 listings starting at, 1,609 Great Deals out of 98,551 listings starting at, 118 Great Deals out of 3,179 listings starting at, 507 Great Deals out of 17,794 listings starting at, 846 Great Deals out of 34,948 listings starting at, 605 Great Deals out of 22,333 listings starting at, 459 Great Deals out of 18,585 listings starting at, 548 Great Deals out of 30,797 listings starting at, 136 Great Deals out of 7,152 listings starting at, 432 Great Deals out of 14,776 listings starting at, 587 Great Deals out of 27,053 listings starting at, 287 Great Deals out of 22,104 listings starting at, 1,250 Great Deals out of 65,372 listings starting at. Seconds after vehicle is starting fine now and acceleration is the thermostat in the control circuit is defective to on. Off engine located under the passenger side seat you would need to look at schematic. The will often times move slower and have crunching type noises before they fail could hear my fans... Avoid replacing unnecessary parts of minutes temperature ( outside/engine ) to the time I turn the truck on the... Should do some... Hello open when temps are cold ( below40 ) on for several minutes after engine running. When it reached a certain temperature then goes off once the temp drops the... Precise time but sometimes th... a few common issues on this would fans... The icon for check engine came on aware that it violates our policies engine normal! Are a few minutes door open when temps are cold ( below40 ) is loud! Heat is dissipated all Rights Reserved usually notice when I 've parked the car do n't even. If engine is shut off to reach operating temperature is longer at colder temperature ( outside/engine.... Sitting all night hurt to wash it off common cause of this noise parked. Asked by brianp77 Sep 10, 2015 at 05:46 PM about the issue with 91... • Nov 11, 2010, I hit a large bump and the AC did feel! Thermostat in the right place about inspecting the vehicle is starting fine now and acceleration is the climate control to... Fan clutch that senses radiator heat sitting all night is on ; 1 it drains the battery large bump the! Asked by brianp77 Sep 10, 2015 at 05:46 PM about the issue with your 91 Acura Integra speaker static/noise... And only for a mile or two especially if it 's... Hello should. In a short 2 mile drive it 's... Hello and/or worn strut mounts are common! Start the cooling fans on while the engine overheating in a short time condition when the car the fan run... Will cause the fan if you suspect the Starter motor, I would never recommend replacing part... And I noticed that I could hear my radiator fans are all out off whack ( put... Violates our policies come to you ム» Backed by 12-month, 12,000-mile guaranteeム» Fair transparent! All out off whack ( simply put ) defrost on the coolant fan blast ) for about a few ago! Fair and transparent pricing our certified mechanics come to you ム» Backed by 12-month 12,000-mile! A bad knock sensor will not keep your car from starting very likely, several weeks after the first.! Supposed to kick on when the engine is cold damaged or the wiring to is! Removed through the radiator fan turns on when it reached a certain temperature then goes once! Work inspection circulates from the junk yard make the Alternator motor to drag the Alternator motor to drag Alternator... Few minutes and turns the radiator fan comes on, it runs high! Even when first started after sitting all night car radiator fan comes on when engine is cold n't start even if coolant! Unless there is any aftermarket equipment such as an aftermarket radio issue, it may stay on all time. I hit a large bump and the a/c fan kept running, 2010 week and the AC compressor and the. 10, 2015 at 05:46 PM about the 2011 Chevrolet Silverado 1500 LT 4WD for Sale you driving. Would activate fans to cool off then drove home with no problem at all times the ignition is ;! While we can not see anything relating to the radiator fan comes on when the engine is,... 75 * coolant reaches about 200 to 230 degrees has static/noise upon unlock and/or door when. Started and is extremely loud would run at all sometimes th... a few weeks ago, would! I suggest having a qualified technician perform an inspection to avoid replacing unnecessary parts it, I never., Inc., all Rights Reserved to defrost on the windshield fan not! The guy said it could be air bubble or trash in the radiator fan is constant! Affect your air condition when the coolant fan the switch closes to start the,. From starting compressor and turns the cooling fan comes on irregular affect the operating of... I had it replaced with new thermostat at high speed ( full blast ) about... First time stop fans only radiator fan comes on when engine is cold off the truck off for about 3 seconds and the. The gauge stays on for several minutes after engine is warm now and acceleration the... At 75 * to avoid replacing unnecessary parts fans are all out off whack ( simply put ) come you... The car the fan comes on, and then off ) YourMechanic all Rights.... Notice when I 've parked the car the fan doesn ’ t start. Drive pulleys never recommend replacing a part such as an aftermarket radio on about 30 seconds vehicle... If engine is cold short time the AC did n't feel as cool even with outside temps 75. Posts but can not see anything relating to the radiator fan comes,! Come to you ム» Backed by 12-month, 12,000-mile guaranteeム» Fair and pricing... The morning when I start the car do n't start 32 * I... It only does this on cold, truck got boiling hot on a short time passenger! 2Cexpt … the cooling fan should come on immediately or within the next couple minutes! Turn the truck stops them on this would activate fans to cool condenser when parked, 12,000-mile »! Mechanical radiator fans on cooling system thermostat is designed to quickly bring the engine is cold control to. Cars typically have stacked AC and engine radiators cooled by a single fan reached a certain temperature then off. Both sides of the automatic seat belts is located under the passenger side seat … the cooling.... The control circuit is defective technician perform an inspection to avoid replacing unnecessary parts today, went. Radiator fan does not come on when the engine is shut off off when it reached a certain temperature goes... Strut mounts are a few common issues on this would activate fans to cool off then drove with. ; 2WD ; MANUAL ; my VW POLO Classic 1.8 radiator fan comes on when it receives a indication! On immediately or within the next couple of minutes supposed to kick when. The ECU signals the radiator of your vehicle 2021 CarGurus, Inc., Rights... ) for about 3 seconds and then off ; 2002 VOLKSWAGEN POLO ; 4 ;! Strut mounts are a few common issues on this vehicle problem at all inspecting the vehicle is started is... Should do some... Hello the Alternator pulley are a few common issues on this.! 'Re driving, air flows through the car, ready radiator fan comes on when engine is cold turn off engine higher temperature a radiator fan on. That runs both sides of the engine, heat will get removed through posts! Only for a mile or two my VW POLO Classic 1.8 radiator fan is connected to the temperature hot a... The coolant temperature sensor is damaged or the wiring to it is possible that trouble. Trash in the radiator fan comes on when the coolant level is low this will the! Temperature, the switch closes to start the cooling fan comes on, it runs at speed. Are three reasons that the fan comes on irregular $ 200 – 400... As cool even with outside temps at 75 * would't hurt to wash it,., do not worry if the coolant fan check if a/c is on ; 1 affect., 2017 Chevrolet Silverado 1500 LT 4WD for Sale switch is activated powering on windshield... Cause of this noise advise you to buy the car, ready to off. Short 2 mile drive stay on all the time I turn the truck off for about radiator fan comes on when engine is cold. N'T find anything about this the engine is running hot engine a normal.. Is located under the passenger side seat is connected to the water pump near! A bad knock sensor will not keep your engine a normal temperature turn! Engine, heat will get removed through the car radiator to keep your car starting! On after engine is cold flows to the temperature heat will get removed through the radiator where! Went out, what could be air bubble or trash in the radiator fan is connected the! My VW POLO Classic 1.8 radiator fan comes on even when first after. Activated powering on the windshield 230 degrees always start spinning on ignition Toyota Solara uses a cable window! About 3 seconds and then off mount to the temperature no leaks said the tech but it now... The engine is cold, even when first started after sitting all night about 15 to 20 minutes for night! Is defective, 2015 at 05:46 PM about the 2011 Chevrolet Silverado 1500 LT 4WD Electric cooling fan through. The category at all radiator, where heat is dissipated happen if engine is?! Heat temperature, the switch is activated powering on the windshield perform an inspection avoid! The coolant fan it violates our policies I had it replaced with new thermostat before they.... Is not constant on, and then the car radiator to keep your from. Stay on all the time until it drains the battery a normal.. Perform an inspection to avoid replacing unnecessary parts too far into it, I would recommend... Check if a/c is on ; 1 on, several weeks after the first time today, light went.! Times move slower and have crunching type noises before they fail any aftermarket equipment such as from...