What Causes the Abnormal Noise from Car Air Conditioning Fan Blades?
1 Answers
The causes of abnormal noise from car air conditioning fan blades are as follows: 1. Dirty air conditioning filter: A dirty air conditioning filter can cause excessive noise and abnormal sounds. The air conditioning filter should be replaced promptly. 2. Foreign objects: Debris inside the blower fan blades can lead to abnormal noise. You can first turn on the blower without starting the engine to see if the noise occurs. If the noise appears, it can be confirmed that the issue lies with the blower. 3. Worn clutch bearing: The abnormal noise may be caused by a worn clutch bearing inside the air conditioning pump, which increases engine noise after turning on the air conditioning. This component cannot be replaced separately; the entire air conditioning pump assembly needs to be replaced.