The radiator fan in any type of vehicle supplies the engine block with cool air. This fan aids in decreasing engine temperatures, normalizing hot and cool air for the passengers, and let radiator fluid circulate all the way through the engine block. A radiator fan out of order can be grounds for a disastrous engine breakdown if left unchecked.

The radiator fan is a very important building block to preserving cool engine temperatures. The fan draws cooler air over the motor, turns the water pump that spreads out the radiator fluid, as well as turning the drive pulley for the heat and air conditioning.

Radiator fans come in two typical options. Imported cars that normally have front-wheel drive utilize an electric radiator fan to cool the fluid as it moves across the radiator. Electric radiator fans let the fan run not having to employ the belt-driven power of the motor. This has the need of horsepower from the motor, dropping gas mileage off and causing it to be more difficult for the engine to run. One more kind is a fan and clutch system. This is a hub that connects to the engine block and rotates a pulley system to aid with driving the engine mechanisms. This form of fan draws air onto the engine to support the cooling down.

If the fan happens to stop running just after the engine cools down, then that is what it is naturally suppose to do. If it just keeps on running after about an hour, then it is time to have your engine examined for short circuits in the wiring with the expertise of an electrical mechanic of course.

Under such circumstances, the temperature coolant switch may be bad or the fan relay may be stuck closed. You can try unplugging the temperature switch and check if the fan goes off. If not, it is most likely the fan relay. See if the fan relay of your vehicle is jammed open. You can do so through replacing it with another one. It can be spotted just under the hood. There must be an illustration beneath the cover of the fuse box. You can also unplug the relay and check the contacts with the meter to determine if they are close or of zero resistance. Another cause of this problem may be because of a faulty fan switch. Change the relay or switch according to what may have lead the fan to keep on running. All of these parts are inexpensive anyway.