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What Causes the Abnormal Noise When Turning on the Car Air Conditioner?

1 Answers

VonBrooklyn

07/29/25 11:15pm

There are several reasons for abnormal noise when the car air conditioner is turned on: 1. The electromagnetic clutch of the compressor malfunctions, causing abnormal noise. The compressor frequently operates under high load, shifting from low to high speeds, placing high demands on the electromagnetic clutch. The electromagnetic clutch is installed close to the ground and may come into contact with rainwater and mud. When the bearing inside the electromagnetic clutch is damaged, it produces abnormal noise. 2. The electromagnetic clutch of the compressor and the tightness of the compressor drive belt can cause abnormal noise in the car air conditioner. If the drive belt is too tight or too loose, it will affect 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 will increase. 3. Improper tightness of the drive belt can prevent the compressor from working properly, leading to compressor damage. Insufficient lubrication oil in the compressor can cause internal abnormal noise, and improper use of lubrication oil can result in compressor wear and failure.

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