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Should radiator fan run all 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 does my radiator fan keep running?
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. Failing coolant temperature sensor or damage to its wiring.
Why does my car fan keep running after I turn it 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.
Is it normal for a radiator fan to run all the time?
This is normal in many vehicles, such as BMW or Mercedes-Benz. The radiator fan may run up to five minutes and sometimes longer. Unless there is an electrical issue, it may stay on all the time until it drains the battery.
When does the cooling fan come on in a car?
The cooling fan will come on when the engine is cold and it will stay on the entire time the engine is running. I’ve read that the cooling fan will run the whole time when either the A/C is on or the vent control is set to defrost, regardless of whether the engine is cold or hot.
Why does my car fan keep running after I Turn Off the engine?
Running cooling fans help cool down the engine even after you turn off the car. If your cooling fan runs for over 10 minutes after turning off the engine, you may have a problem that needs to be fixed. Here are some possibilities causing the fan to stay running longer. short in the electrical wires and so on.
Why are my cooling fans running at all times?
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.