Car Radiator Fan: the Most Frequent Reasons Why It May Stop Working

the Car's Radiator Fan Is an Essential Part of the Cooling System and Its Proper Operation Ensures the Correct Temperature, but If It Does Not Work, the Engine Will Suffer Great Damage from Overheating.

The vehicles fan has the task of creating air to pass through the radiator, towards the engine and keep these two from overheating.

All internal combustion cars have a fan that should activate when the engine temperature exceeds approximately 200ºF. Otherwise, the engine can be seriously damaged and repairs can be very expensive.

The fan is necessary when the ambient air is not sufficient to cool the liquid in the engine radiator, or when the engine is stationary.

So if you see the temperature of your car rising and the fan not turning on, you should get the car checked immediately and have the repairs done. Here we have gathered some of the most frequent reasons why it may stop working.

1.- Fan Motor

The fan motor may stop working and you will need to replace it with a new one, to fix the problem and not risk it failing.

2.- Fan Fuses

If the fan stops working, the first thing to check is that the fuses are not burned or loose. If they are burned you should change them for new ones.

3.- Temperature Sensor

The car's fan is just behind the radiator, where the closed-loop cooling system begins. This closed circuit is where the coolant circulates and the operation of the fan is based on a thermostatic switch, which compares the temperature of the motor and the outside temperature to activate or deactivate the rotation of its blades automatically.

In the event that this sensor does not work, the fan will do its job. You can find this sensor on the thermostat cover.

4.- Fan Cable

If the car heats up and the fan does not move at all, the cable in charge of feeding it with standard 12V current may be damaged and not pass electricity for it to turn on.

You can check for current with a multimeter.