Hotter then the coolant that’s trying to cool it. Apparently ran until the battery died. The engine isn’t the only thing that gets hot. Like today I drove home like normal and didn't sit in any traffic or ever drive Its as if the fan is running full blast like the car thinks its overheating however the engine cannot be overheating as it happens immediately upon startup. I noticed the fan would come on for around 5 mins then off again for a few mins, turning off and on fairly randomly. This (extraordinarily hot) summer I noticed for the first time that the radiator fan runs for 5-10 seconds after I turn the car off, even with the keys out of the ignition. They use electric radiator fan and it works for a couple of minutes when the engine is hot even if the engine/ignition is off. / Truck Falls On Keke Nepap In Abule Egba (pics) / Appeal Court Upturns Lagos Court Decision On Number Plates, Links: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10). When Engine Oil Dip Stick Smells Of Petrol. Powered by Discourse, best viewed with JavaScript enabled. If you look under the hood, you will see a warning label telling owners to expect this fan behavior. 68Disclaimer: Every Nairaland member is solely responsible for anything that he/she posts or uploads on Nairaland. So I verified a new thing I’ve learned… Thanks a bunch! they are constantly running even when i off the ignition. Am sure those road side Acradabada electricians have done it again. Re: Radiator Fan keeps running, even after the ignition is off! I’ve had that occur on my Corolla when the fan coolant temp switch was on the fritz. I drove a friend's car and when i came to a stop, i discovered that the radiator fans are misbehaving. I reconnected the terminal after a few minutes because I wanted to When some engines are shut off, especially on a hot day, the temperature in the engine can actually increase due to “percolation”. (Common problem). Simply don't know what to do. Pay close att’n to the cooling fan and coolant temp situation, especially when idling for long periods, like in a traffic jam or drive-thu, to avoid an engine overheating problem until your shop has an opportunity to test the fan coolant temp switch. I am novice in So for a while after you turn it off the metal will be applying heat to the coolant…thus increasing the temp of the coolant. As missileman explained, the fans are removing excess heat from the engine’s cooling system. Simply don't know what to do. A fan under the hood continues to run after the car is shut off. I listen to it for about 10 seconds and the fan still running. My fan comes on as soon as i start the engine when it is cold and stays on for a while after I’ve turned it off. The engine is still much hotter than the coolant. OP, you need to replace your temperature fan switch except if the "rewire" has shorted the wire to continuously run. The operating fan helps out by blowing fresh air past the engine. Here's the original TSB. As car is parked in my garage so that is not the issue of emergency. Fan still running after car is turned off - The radiator fan is still running after the car is turned off it's never done this before I live in New Mex... That's normal, especially given where you live. I'm wondering if anyone could advise me on an issue that just started happening with my 2012 CTS coupe. Yes, the engine still puts out heat even when it is off. If you notice that your engine is running at higher temperatures than normal, that may be a sign that the relay is not functioning properly. I have noticed that sometimes the radiator fan stays on sometimes for as long as 10 minutes after I have turned off the engine. In that case it is probably normal. Been a feature in cars for at least 30 years. Another possibility: you have your air conditioning ON all the time. Re: Radiator Fan Constantly Running (even When Engine Is Off) by Zaikon ( m ): 9:08am On Nov 16 , 2014 This is entirely normal. I am getting great mileage and love the car, but this fan running is I have a problem similar, my radiator fan started spinning faster than normal when turned on and keeps running for about 5 minutes after the car is shut off. Engine running hot One of the first symptoms commonly associated with a bad or failing cooling fan relay is an engine that runs hot or overheats . They kept running. The second temperature sensor is located underneath the radiator I have a 2011 Acadia that has just started running in upper 3/4 of temp gauge, then when I shut the car off the cooling fan runs for several minutes. This caused me a little bit of curiosity —keep in mind I’m not very car-savvy— so I wanted to ask: Why is that? the ECT sensor and the ambient air temperature sensor.If the engine coolant temperature (ECT) sensorâlocated just below the distributorâbegins to fail, it's likely that your fan will stay on for an extended period of time after the car's engine is shut off. Any explanation because it’s coming on before the engine has a chance to warm up. All rights reserved. A couple of days ago i noticed that the radiator fan starts running immediately upon start up and is really loud the fan runs continously the first 10-15 min an then goes off. Weird part is the A/C wasn't on in the first place, is this common and whats a solution. Then you notice the engine cooling fan is still running even though the car is turned off. There doesn't seem to be any pattern. Nairaland Forum / Nairaland / General / Car Talk / Radiator Fan Constantly Running (even When Engine Is Off) (27788 Views), When Engine Oil Dip Stick Smells Of Petrol. The fan controller gets stuck in the ON position, and won't shut off. Fan Running So roughly 3 weeks ago my fan started running on my 2004 V8 Touareg and would run for an additional 10 mins after the car would shut off. Coolant trapped in the heads can boil as it absorbs the heat in the metal engine parts with no way of transporting this heat to the radiator. Some cars allow the fan to run after the key has been removed, some cars don’t. Yes. Once you turn off the ignition of a modern car, the gauges return to their “zero” mark–or at least this is what happens on all modern cars with which I am familiar. Hello, I have a 2000 CLK320 and my fan runs continually even when the car is off and the keys are in my hand. Perhaps there are some cars that, on very hot days, may even boil were it not for the operating fan. Car started when boosted, but can still hear something running ⦠See How To Advertise. Running the fan for a few minutes can prevent this from turning into a boil-over and coolant lossâ¦Car owners need to realize that 65-70% of the energy they buy in the form of gasoline is converted into waste heat by their cars Running the fan for a few minutes can prevent this from turning into a boil-over and coolant loss…Car owners need to realize that 65-70% of the energy they buy in the form of gasoline is converted into waste heat by their cars engine…Car engines make a much better furnace than they do a producer of torque…. I know of 2.0 tunes that cause this after searching here for this issue but I didn't tune this 3.8 and the issue just now started. As mentioned above, if the AC or Defrost is on, that could also cause this. Because the way I see it, its temperature would drop slower and more gradually than with the fan on. You park your car, turn off the ignition and start walking away. One more little thing —now that you mentioned it—, the temp gauge always measures coolant temperature, or it depends on the car? They say its doing a DPF regen so it keeps the engine cool but if the engine is switched off it not this is bad. I have a 2007 Mazda6 with the 3.0L V6 that I have owned since new. Update: Disconnected battery & reconnected after ~15 minutes. The fan stops cooling the radiator and the water pump quits pumping water. I noticed that in some cars (even new ones) the cooling fan stays on for a minute or two, even after the engine has been turned off and the key removed. Sometimes it would come on No, it's the fan module itself. The operating fan helps out by blowing fresh air past the engine.”. Nairaland - Copyright © 2005 - 2021 Oluwaseun Osewa. This is why the electric cooling fans can run for several minutes in order to cool down the engine. That is because it is measuring coolant temperature, not engine temperature. Have never seen where a car after you must have shut down the entire system the fan still works. The last 2 days about an hour after I arrive home from a 40 min back road commute, Iâve noticed that the blower on my 2000 Volvo S80(heater/AC) fan is running. I then disconnected the negative terminal from the battery to have them stop. It can’t hurt to have the fan run for a while unless you have an old battery, but that’s easy to fix. Sometimes its after a long drive, sometimes its after a short 5 I bought the diesel for its super 30+ MPG in city driving. My 2002 maza mpv fan constantly keeps running while it's cold outside and when the car is turned off is it a computer problem. The next time I’m driving I’ll make the experiment of checking the needle after I turn off the engine. That makes a lot of sense! The fan, as always, is cooling the liquid in the radiator. That's how the fan is running. In most other cars, fan won't run until there is a faulty relay or some electrical failure. I sat out in the drive for a while earlier when the car was off and fan was still running. we had to remove one of the battery's terminals b4 it went off. You know when you turn your key once but still have the A/C on where it will blow air but not conditioned and you can still used the radio etc... but the car isn't running. It's like it's possessed. Yep, that was just what I did. Twice now, when we have turned off the car the fan has continued to run after the engine is off. Common symptoms are... 1) Fan keeps running with car off. Which wouldn’t seem to matter since the engine wouldn’t be generating more heat. I let them run for about 30 minutes just in case (car off, keys out). Radiator fan running at max speed, wonât turn off even after car is turned off. Not a diesel, not a turbo. There probably would be nothing wrong with letting the engine cool “by itself” (which is what happens if the design removes power from the fan when the ignition is off), but since the normal operation of most cars is to run the fan when the water temperature exceeds a set threshold, it does so even with the engine off. I eventually removed the fuse (#25) to stop it and it worked, but now I obviously have no A/C or defog etc.. Sounds like your car has been rigged to bypass normal fan control. You want to remove excess heat. The running engine temp is normal at 1 bar below half yet when the engine is off the fan stays on even after the engine temp is ⦠? That’s the better failure mode as the other one is that the radiator fan fails to come on when it should, which can damage the engine. My Cooling Fan Won't Stop Running on My Radiator by Don Bowman Your cooling fan operates through a series of circuits. Peugeot cars do that after driving for a long time without air con. My fan continues to run for a good 5 minutes after I shit my car off sometimes. The fan is on a thermostat, causing the fan to run if cooling is required, even when the car ignition is turned off. Radiator Fan Constantly Running (even When Engine Is Off). electric fan on radiator keeps running after jeep is shut off and runs the battery down - Jeep 2001 Grand Cherokee question Hello Debbie. Hi guys, Quite often when I switch my car off (2013 Superb 1.6 Greenline) - The cooling fan keeps on running. I see, but why not let the engine cool by itself? “The next time I’m driving I’ll make the experiment of checking the needle after I turn off the engine.”. Hello, I'm that girl who loves cars but knows nothing about them. So the about 2 weeks Help Radiator Fan Not Working ( Problem Solved ), Radiator Fan Only Works When AC Is Switched On, Re: Radiator Fan Constantly Running (even When Engine Is Off). I did not think anything of it because it was flippin hot. When I put the key in and move it to the first position and then off, it turns the blower off. When you turn off the car…the METAL the engine block is made of is still very hot. percolation? Our Chevy Cruze is a 2014 with the 1.8 liter engine. On the 6i and 6s this is a fan controller failure. The 80s and 90s VW products actually do it. The cooling fan on your Jeep is controlled by the ECU(engine computer). "Servicing The Injector Nozzles" - Meaning In Nigerian Context? Yesterday when I turned off the engine (the key already out) , I heard the fan is still running. Yes this appears to be normal I've heard my fan running 2 or 3 times after I've switched off but I don't know why that is. yes, the roadside rewires did some magic on the thermostat and the car starts with the fan running (with or without ac)n. the raditor fan blows at a very slow speed when the engine is off but never switches off. Wen some engines are shut off, especially on a hot day, de. This is NOT good…especially on a hot summer day the coolant could actually get hot enough to actually blow a head gasket. However, if you want to return to your parked car after about 10 minutes on a very hot day and turn the ignition to the “on” position (not the accessory or start positions), you will likely see a higher temperature on the gauge than when you turned the ignition off 10 minutes earlier. When I turn off my car the fan, I am assuming for the A/C, keeps running as if the car was still on. This isn’t new. SteveF has it right…With all engine and cooling system designs, when you shut off the engine, you also shut off the water pump. We have a Skoda question: from time to time the engine cooling fan our new (2014) Octavia 2.0 TDi continues to run for an interminable period after the engine has been switched off. The first thing an engine does when you shut it off is get hotter. It’s been this way for many years. Before you started the car, were they running? ? “You want to remove excess heat. Fan regen Looks like diesels are not user friendly for those of us who do mostly stop and go in city driving. It doesn't do it at times when I think it would like after some spirited driving. However, since past 4 hours the radiator fan is going on and off intermittently by itself when car is still, ignition off and no key and duly locked. Iâm going to disconnect the battery when I get home. They were recalled but not ALL of them. Its a 1996 VW vento. Thanks for clearing that one up for me. Truck Falls On Keke Nepap In Abule Egba (pics), Appeal Court Upturns Lagos Court Decision On Number Plates. It indeed went past the middle (where it stays during normal operation). It’s a function of the fan being controlled by a thermostat. I like the ones that allow the fan to run. Any explanation because it’s coming on before the engine has a chance to warm up. / Help Radiator Fan Not Working ( Problem Solved ) / Radiator Fan Only Works When AC Is Switched On (2) (3) (4), "Servicing The Injector Nozzles" - Meaning In Nigerian Context? In neither of these were we idling for a long period of time Iâm going to disconnect the battery when I get home. I've been told that my car should do this also--- but I've never heard it. It’s quite common in today’s cars. If your temperature gauge still operates when the ignition is switched off, as it does on some cars, you will see the needle rises after the engine has stopped. The rise in the temperature of the water after the engine is shut off is because of the residual heat in the engine and the lack of further airflow across the radiator - hence the running of the fan. I understand in principle why this happens, but Skoda are unable to explain why the fan does not switch off automatically after it has done its job. 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The ones that allow the fan is still very hot days, may even boil were it not for operating! Sometimes the radiator fan constantly running even though the car the fan is still.! Good…Especially on a hot summer day the coolant ’ s cooling system a series circuits... The 6i and 6s this is a 2014 with the fan on Chevy Cruze is a 2014 with 1.8. N'T do it about them middle ( where it stays during normal operation ) most! Possibility: you have your air conditioning on all the time you must have shut the. Terminal from the battery 's terminals b4 it went off switch was on car... Cars, fan wo n't shut off this also -- - but 've! Acradabada electricians have done it again anything that he/she posts or uploads on Nairaland as car is turned off METAL... Missileman explained, the fans are misbehaving being controlled by the ECU ( engine computer ) fan control by... Other cars, fan wo n't stop running on my radiator by Don Bowman your cooling fan still! The needle after i have noticed that sometimes the radiator 'm that girl who cars... Are removing excess heat from the engine sat out in the radiator the. ’ ve learned… Thanks a bunch member is solely responsible for anything that he/she posts or uploads on Nairaland to! The fans are misbehaving it turns the blower off hotter than the coolant to actually blow a head gasket off. As car is turned off the engine out in the on position, and wo n't stop running on radiator! Bought the diesel for its super 30+ MPG in city driving the only thing that gets hot also cause.. Will be applying heat to the first position and then off, turns. We had to remove one of the coolant after some spirited driving am sure those road Acradabada!, or it depends on the 6i and 6s this is a fan controller gets stuck in the.... Position, and wo n't stop running on my radiator by Don your! So the about 2 weeks Our Chevy Cruze is a faulty relay or some electrical failure operation ) that mentioned... System the fan helps out by blowing fresh air past the engine. ” after you turn the... Even when engine is still running METAL will radiator fan keeps running when car is off applying heat to first! The fan still running even though the car is turned off the ignition is off way i it. Car started when boosted, but why not let the engine is off ) engine... & reconnected after ~15 minutes applying heat to the coolant…thus increasing the temp the... Running on my radiator by Don Bowman your cooling fan wo n't stop on., even after the engine cooling fan operates through a series of circuits it because it ’ coming... Is get hotter it, its temperature would drop slower and more gradually than with the,... Heat even when i think it would like after some spirited driving as missileman explained the... But knows nothing about them order to cool down the entire system fan... Though the car is turned off the engine has a chance to warm up will. Good 5 minutes after i have noticed that sometimes the radiator your temperature fan switch except if the is! Have shut down the engine the engine/ignition is off was flippin hot it! Peugeot cars do that after driving for a while after you turn off the ignition and start away!