When Does the Car Fan Start Running?
1 Answers
Whether the car's cooling fan starts running depends on the coolant temperature and is not related to time. When the coolant temperature reaches 98°C, the radiator fan will automatically turn on. The car's radiator fan operates automatically and cannot be manually controlled; it does not activate at low temperatures. At medium and high temperatures, it operates at two speed levels. Generally, the fan starts at medium speed at 95°C and switches to high speed at 105°C. Below is some relevant information: 1. Activation or deactivation of the cooling fan: Controlled by the thermal-sensitive switch on the radiator. When the coolant inside the radiator reaches a certain temperature, the thermal-sensitive switch activates the radiator fan. When the coolant temperature rises further, the thermal-sensitive switch increases the fan speed. Once the coolant temperature drops below a certain level, the radiator fan automatically turns off. 2. Fan operation: Only after the engine has been running for a certain period does the temperature rise, increasing the coolant temperature in the radiator. When the coolant temperature reaches 95°C, the fan starts running at approximately 1,600 RPM. When the temperature reaches 105°C, the fan speed increases to about 2,400 RPM to enhance the cooling rate.
