Why Does the Car Fan Keep Running After the Engine Is Turned Off?

1 Answers
CaliMarie
07/29/25 11:10pm
The reasons why the car fan keeps running after the engine is turned off are: 1. The higher the coolant temperature after parking; 2. Short circuit in the fan motor or control circuit; 3. Damage to the water temperature sensor or stuck contacts of the fan relay. The function of the fan is: to increase the air velocity through the radiator core, enhance the cooling effect, and accelerate the cooling of water. The solutions for a car fan that keeps running after the engine is turned off include: 1. Wait for ten minutes to observe whether the fan continues to run; 2. Conduct a comprehensive inspection of the cooling system; 3. Unplug the fan wiring harness for separate power-off treatment; 4. Go to a repair shop to replace the sensor or relay with a new one.
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