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What Causes Abnormal Noises in the Car Air Conditioning?

1 Answers

GideonLynn

07/30/25 1:15am

When the car air conditioning produces abnormal noises, it is necessary to determine whether the noise is coming from inside or outside the air conditioning system. Abnormal noises inside the air conditioning system are often caused by moisture or air in the refrigerant. When the refrigerant expands, it can produce sounds, and the refrigerant can be directly replaced. Below is an analysis of common causes of car air conditioning issues: 1. Problems with the compressor electromagnetic clutch: Issues with the compressor electromagnetic clutch are a common cause of abnormal noises in the compressor. Since the compressor frequently operates under high load, transitioning from low to high speeds, the demands on the electromagnetic clutch are high. Additionally, the electromagnetic clutch is usually installed close to the ground and often comes into contact with rain and dirt. When the bearings inside the electromagnetic clutch are damaged, abnormal noises can occur. 2. Issues with the tightness of the compressor drive belt: The tightness of the compressor drive belt can also cause abnormal noises in the car air conditioning compressor. If the drive belt is too tight or too loose, it can affect the lifespan of the electromagnetic clutch. A loose drive belt can cause the electromagnetic clutch to slip, while an overly tight drive belt increases the load on the electromagnetic clutch.

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