The cooling fan is vital to the car because it controls the temperature by taking in air to the radiator. The cooling fan is typically located near the radiator to cool down the coolant fluid and send it back through the engine.
Cooling fan operationThere are two different types of cooling fans, mechanical and electrical cooling fans. Mechanical fans are placed on the water pump shaft and are moved off of the crankshaft with the belt and pulley that control the water pump. Also, the fans are usually active according to the air temperature so that the vehicle won't be overcooled.
Most modern vehicles have an electrical cooling fan, the electric fan operated with a 12V electric motor. The fan functions depending on the coolant temperature and the A/C switch. The electric, as well as the mechanical fans, have shrouds that make sure the airflow is drawn through the radiator.
Common issues with a faulty engine cooling fanA faulty engine cooling fan can lead to engine overheating, the A/C won't be as effective, and loud noises.