The primary function of the radiator cooling fan motor is to regulate the temperature of a car’s engine by cooling the radiator when the vehicle is in motion. Here are the functions of the radiator cooling fan motor:

A) Cooling the engine: The motor is responsible for turning the fan blades, which are responsible for drawing cool air into the radiator and exhausting hot air from the engine compartment. In this way, the engine can be cooled and kept from overheating.

B) Regulating engine temperature: The radiator cooling fan motor is controlled by a temperature sensor that detects the engine’s temperature and sends a signal to the car’s computer. The computer then activates the motor, which turns on the fan blades to cool the engine. Once the engine has cooled to an appropriate temperature, the motor is deactivated, and the fan blades stop turning.

C) Preventing engine damage: An engine that is overheated can suffer serious damage, such as warped cylinders or a cracked engine block. In order to prevent engine damage, the radiator cooling fan motor is responsible for keeping the engine at a safe operating temperature.

In summary, the radiator cooling fan motor plays a critical role in regulating the engine’s temperature and preventing damage by cooling the radiator and expelling hot air from the engine compartment.