What is the solution for abnormal noise from car air conditioning pump?
2 Answers
Car air conditioning compressor abnormal noise causes and solutions are as follows: 1. Compressor electromagnetic clutch is a common source of abnormal noise: The compressor frequently operates under high load conditions with speed variations from low to high, placing stringent demands on the electromagnetic clutch. Moreover, the installation position of the electromagnetic clutch is usually close to the ground, often exposed to rain and mud. When the bearing inside the electromagnetic clutch is damaged, abnormal noise occurs. Solution: Replace the bearing. 2. Tension of the compressor drive belt: 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 belt tension can lead to the compressor not working properly in mild cases or compressor damage in severe cases. If the compressor pulley and generator pulley are not aligned in the same plane during operation, it will reduce the lifespan of the drive belt or compressor. Solution: Adjust the belt tension or replace it directly. 3. There is a certain gap between the electromagnetic clutch and the compressor mounting surface: If the gap is too large, the impact increases; if the gap is too small, movement interference occurs between the electromagnetic clutch and the compressor mounting surface during operation, which is another common cause of abnormal noise. Solution: Reinstall and pay attention to the installation gap.
Last time my car's AC compressor was making a loud noise, probably due to a belt issue. I asked a friend to take a look, and they said if the belt is loose or worn out, it needs tightening or replacing. If the noise persists, it might be a bearing failure inside the compressor or low refrigerant levels. DIY fixes can be risky in such cases, so I recommend getting it checked at a repair shop—they can diagnose the issue with proper tools. Don't delay; loud noises can damage the AC system, and being without AC in summer is a bigger hassle. During regular maintenance, keep an eye on belt condition and replace it periodically to prevent issues. The cost is low, and early action saves trouble.
