What is the reason for the sudden loud noise from the engine fan?
1 Answers
There are several reasons for the loud noise from the car fan: Excessive bearing wear: Check the radiator and surrounding components to see if the bearing is excessively worn. If so, replacing the bearing should solve the issue. Also, check if the fan blades are rubbing against anything. If not, the fan itself might be faulty, and replacing the fan bearing or coupling would be necessary. Fan blades: Inspect the horizontal and vertical clearance of the motor rotor shaft. If there are no issues, remove the motor and fan to check if the fan blades are deformed. Nowadays, most car repair shops typically replace the entire motor. If the problem persists, open the motor to check if the rotor is rubbing against the stator.