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What Causes Loud Noise in Car Air Conditioning Compressors?

1 Answers

Mallory

07/29/25 8:03pm

Loud noise in car air conditioning compressors can be attributed to factors such as poor clutch quality and improper tension of the drive belt. Below are the reasons for loud noise in car air conditioning compressors: 1. Poor clutch quality: The electromagnetic clutch of the compressor is a common source of abnormal noise. The compressor frequently operates under high load, transitioning from low to high speeds, which places high demands on the electromagnetic clutch. Additionally, the electromagnetic clutch is usually installed close to the ground and often exposed to rain and dirt. When the bearing inside the electromagnetic clutch is damaged, it can produce abnormal noise. 2. Improper tension of the drive belt: The tension of the compressor drive belt also directly affects the lifespan of the electromagnetic clutch. If the drive belt is too loose, the electromagnetic clutch is prone to slipping; if the drive belt is too tight, the load on the electromagnetic clutch increases. Improper tension of the drive belt can, at best, cause the compressor to stop working, and at worst, lead to compressor damage. When the drive belt is in operation, if the compressor pulley and the generator pulley are not aligned in the same plane, it can reduce the lifespan of the drive belt or the compressor.

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