At what temperature does the car's cooling fan turn on?
1 Answers
Generally, the engine radiator cooling fan starts to operate at around 90 degrees Celsius. When the temperature reaches approximately 105 degrees, the fan begins to rotate at high speed. For domestic vehicles, the fan typically activates between 93 to 95 degrees. The radiator fan automatically turns on only after the vehicle engine has been running for a certain period and the engine coolant temperature rises. Below are solutions for engine overheating: 1. If the overheating is caused by insufficient coolant, water needs to be added. However, to prevent engine damage, do not add water immediately. Usually, first open the car's hood, then remove the engine cover for ventilation and heat dissipation. Wait for the coolant temperature to drop before adding water. 2. If the water pump failure causes overheating, it might be due to seized bearings or damaged impeller blades (though bearing seizure is less likely). Simply replace the damaged impeller blades. 3. If you notice the engine is overheating while the electric fan isn't running, this indicates either the fan fuse or temperature control switch is burnt out. In this case, remember not to shut off the engine immediately. First open the hood and cool the radiator with cold water to rapidly lower the temperature. Importantly, do not immediately open the radiator cap, as escaping hot water/steam could cause burns.
