What Causes Abnormal Noise in Car Air Conditioning Blower?

1 Answers
PaisleyMarie
07/30/25 8:46am
The car blower is a core component of the car air conditioning system. When abnormal noise occurs, it may be due to foreign objects in the blower or motor failure. Here are the specific details: Foreign objects in the blower: If the abnormal noise changes with the air volume adjustment, it is likely that there are foreign objects inside the blower. Simply removing the foreign objects should resolve the issue. If the noise persists after cleaning, it is necessary to disassemble the blower to inspect the specific cause of the fault. Motor failure: If the abnormal noise only occurs when adjusting the air volume or direction, it is likely due to motor failure or other faults. In this case, you need to open the engine compartment to check which part is causing resonance and perform disassembly and reassembly after careful inspection.
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