What are the reasons for a buzzing sound when the car's air conditioning is turned on?

1 Answers
MacDawson
07/29/25 9:54pm
Car air conditioning buzzing sound reasons are: 1. Dirty air filter causing excessive noise, it is recommended to clean the air filter; 2. Foreign objects in the blower fan blades causing abnormal sounds, you can first turn on the blower without starting the engine to determine if it's a blower issue; 3. Deformed car air conditioning fan blades or damaged fan motor; 4. Possible abnormal sound caused by worn clutch bearing in the air conditioning pump, requiring replacement of the air conditioning pump assembly; 5. Loose screws due to blower vibration, needing tightening; 6. Fan blades colliding with other components; 7. Worn or damaged fan motor.
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