What does it mean when cooling fan runs constantly?
3. Cooling fans stay on at all times. If the cooling fans are staying on at all times, this is another (less common) symptom of a possible problem with the cooling fan relay. If the relay shorts internally, it may cause power to be permanently switched on, which will cause the fans to run at all times.
Why does my engine fan keep running?
It’s 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. However, if the fan is running for an extended period, the fan itself can become damaged due to overuse. It’s possible you may have a module or relay failing in your car.
Is the radiator fan supposed to run all the time?
Do radiator fans always run? Both radiator fans should always run when the coolant temperature sensor in the bottom tank of the radiator reaches about 212*F. It’s 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.
Why is my car fan not turning off?
Pull the cooling fan relay out of the box. Replace the cooling fan relay with a new one. A stuck closed relay is the only thing that can operate the cooling fan continuously with the key off. The computer looses power with the key off and the same applies to the coolant temperature sensor.
Why does my cooling fan run after shutting the engine off?
It is ok for the engine cooling fan to keep running for a few minutes after turning off the car. Your car fan will run for a few minutes after you turn off the car then turn it off. When the engine is turned off, the coolant doesn’t circulate, and the heat stays trapped, therefore prolonging the engine from cooling.
When should a radiator fan kick on?
Your radiator fan should kick in at about 200 degrees Fahrenheit. If you notice your vehicle is overheating or at the very least running hotter than it normally does, listen for the fan to see if you can hear it.
Why does my car sound like it’s still running when it’s off?
Engine cooling fans and other systems are programmed to keep running in some cars even when the engine is off. Once outside the car, she could hear a fan running in the engine area and asked us if this is normal. It is. And many other sounds from under the hood of a car that has been shut off are also normal.
How long does a VW cooling fan last?
The thought of walking away from your Volkswagen with the cooling fans buzzing away leaves most people with images in their heads of dead batteries and tow trucks. Rest assured—this is in fact normal operation. The after-running of the cooling fans is deliberate and can sometimes last up to 16 minutes after switching the engine off.
Rest assured—this is in fact normal operation. The after-running of the cooling fans is deliberate and can sometimes last up to 16 minutes after switching the engine off. The after-running process prevents excessive engine compartment temperatures caused by the diesel particulate filter regeneration cycle.
Why does my Audi A3 fan run all the time?
That 4-pin refrigerant pressure switch was a common failure on the A3 cars, and its failure mode would cause the fan to run constantly. Never seen it manifest itself in the same manner on an early A4 car, though, but that doesn’t mean it couldn’t happen.
What kind of car doesn’t start when the fan is off?
AFAIK, the only cars that don’t do this is some form or another are the ones where the fan is belted off the engine. Only if you worry about the fan running. My Honda Prelude did the same thing, it just started after I walked away.