Cooling Fan Running After Car Is Off

The fan starts running on high speed and continues to run loud about 5 min after I shut the truck off. In fact engine heat can increase when you first shut them off since water pump is no longer circulating coolant as hot coolant expands from the heads and into the radiator the cooling fans need to run to.

Car Fan Still On When Engine Is Turned Off Youcanic

Allow a few minutes after you shut off the engine.

. The fan runs whether the car is being driven or not. However if the fan is running for an extended period the fan itself can become damaged due to overuse. I ended up parking the car for several hours and it drained my battery.

Radiator fan keeps running when engine is off Radiator fan stays on after car is turned off Radiator fan running all the time Radiator cooling fan running constantly. I just got an oil change and a tune up but its still doing it Mechanics Ass. Also check the operation of the coolant pumpvalve at the top of the radiator passenger side I think.

The water pump is the likely culprit. To understand how the cooling fan should work correctly you need to know at what temperature the electronic control unit ECU turns de. - Fans run on HIGH when car is running.

Or open the hood and let the engine idle for a few minutes before shutdown might also cool the engine back to normal range. Faster And Cheaper Than Traditional Printed Manuals Users Get Instant Access To The Repair Information They Need For Any Car Truck Van Or Suv. Thats normal especially given where you live.

The situation when the car radiator cooling fan keeps running constantly can be caused mostly by a failing coolant temperature sensor or its wiring broken fan start relay damage to the electrical wires electronic engine control unit ECU problems. - If I pull relay to COOL FAN 1 both fans stop. Yes actually it did.

But if the fan stops running then either the ECU is still providing the ground signal to the relay. The fan keep running after switching off is a safety measure when the ECM cannot read the temperature it will keep the fan blowing for 10 to 15 mins after you switch off to make sure the car is not in a situation where it can cause a fire as the ECM cannot determine if the engine is ice cold or burning hot. When the sensor fails the radiator fan runs at full speed like the car is overheating.

- Fans run on LOW when car is shut down. Usually that will only show a problem after the car has run the fans for the max cooling time with the engine off and the coolant temp has not dropped enough. You drain your battery completely dead too many times and you need to replace it.

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. This is the reason the engine isnt overheating. Dont try to stop it by turning off the car and then back on this only defeats the purpose.

This helps dry the heat exchanger so it doesnt grow as much mold or other biologicals which tend to stink to high heaven the next time you start the car and run the fan. Only if the engine was recently put under heavy load which is pretty unusual especially in IL. Its normal for some vehicles to have a fan run for a few minutes after the car is shut off generally to keep the engine cool.

The radiator fan may run up to five minutes and sometimes longer. Engines are still hot when you shut them off the fans need to run to continue removing heat from the cooling system. Its possible you may have a module or relay failing in your car.

You dont say what kind of car it is but a lot of cars have temp sensing engine fans that will continue running after the engine is turned off. PART NEEDED TO REPAIR 07-20 GM 36L SLTSLE FAN CONSTANTLY RUNNING Linked Belowhttpsamznto35GvvXgHow To Repair Cooling Fan Constantly Running Radiator F. Let the car do what it does as this is how the computer is programmed.

Both the X3 and my mothers 325i N52 engine have continued to run the cooling fan for 3-5 minutes after the engine was turned off after climbing a prolonged steep gradientmountain. This is normal in many vehicles such as BMW or Mercedes-Benz. This is why the fan must go on whether the car is running or not.

Its perfectly normal to have your cooling system fan stay on after youve shut off the car but it shouldnt stay on longer than ten minutes. Why does the radiator fan run all the time. While your fan is still running disconnect the connector that has the yellow and yellowwhite wires from the relay.

Check It Out. It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. If the fan still stays running then you know for sure the relay is defective.

To my knowledge the fan goes off and on as you drive based on varying engine temperature but should not run on after you turn the car off unless the engine is excessively hot for some reason but you would be aware of that due to the temperature gauge. Then after the key is off for about 5-10 minutes itll run the HVAC fan for a few minutes. If I plug it back in they start back up.

During a regen the DPF heats up to 800C. In some cases the fan stays on too long which causes the battery to drain. Have a 2015 Chevy suburban with 113000 miles.

It may also come on if its really hot and you are in heavy traffic with the AC on. All is well in CTD land. It drains the battery.

Your car fan will run for a few minutes after you turn off the car then turn it off. Running cooling fans help cool down the engine even after you turn off the car. It watches the car as it is being driven for things like AC operation outside temp etc.

When the engine is turned off the coolant doesnt circulate and the heat stays trapped therefore prolonging the engine from cooling. Radiator Fan keeps running after engine is switched offOpen the door the radiator fan turns on and stays onEventually draining the battery no faultsalarm. When you shut off the car the fan continues to run at full speed for at least 15 minutes.

I drove like this all day yesterday. Then they turn on and back to aggrevating me. Fans dont turn on after shutdown that might indicate the computer is seeing an engine hot enough to warrant cooling with the radiator fans to cool the compartment.

It smells like burning plastic usually. - If I disconnect battery and reconnect the fans shut off until I restart the vehicle. I jumped her and drove her home.

The radiator fan may run up to five minutes and sometimes longer. If this happens to your Accord you might have a. So yesterday while out enjoying the first real decent weather this year I notice my radiator fan running continuously after the car is shut off.

Up to 8 cash back The fan starts running on high speed and continues to run loud about 5 min after I shut the truck off.

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