Why is the car fan making loud noise at high speed?
2 Answers
It may be due to excessive bearing wear. Check the radiator and surrounding components to see if the bearing is excessively worn. If so, simply replace the bearing. Also, inspect whether the blades of the cooling fan are rubbing against anything. If not, the fan may be damaged, and replacing the fan bearing or coupler should solve the issue. Below is an introduction to the electric fan: 1. Composition: The electric fan is designed to prevent the engine coolant temperature from getting too high. It consists of a sensor, the electric fan, a chip, and other components. 2. Function: When the coolant temperature generally exceeds 90 degrees, the sensor activates, and the electric fan turns on to lower the coolant temperature. In winter, when temperatures are lower and the coolant temperature is also lower, the electric fan usually does not operate, protecting the engine from working in excessively cold or hot conditions.
As someone who has been driving for many years, I've encountered situations where the fan runs at high speed with loud noise. Common causes include worn or aged fan bearings or imbalanced blades, which can produce loud noises during high-speed rotation. The car's cooling fan is used to cool the engine and air conditioning system. If the air conditioning pressure is too high or the thermostat is stuck, it can cause the fan to run continuously at high speed. Additionally, dust or debris may be stuck on the fan, increasing friction noise. When dealing with this issue, first check if the fan is loose and listen for any screeching sounds; in older cars, insufficient bearing lubrication is common. It's recommended to regularly clean the fan area to prevent blockages. Don't ignore loud noises—promptly visit a repair shop to check the cooling system, otherwise, the engine may overheat and get damaged, leading to serious consequences. Make it a habit to check the coolant level during seasonal changes to ensure the fan operates normally.
