How to Solve Abnormal Noise from Car Air Conditioning Compressor?
2 Answers
Car air conditioning compressor abnormal noise causes and solutions are as follows: 1. The electromagnetic clutch cannot engage normally, slips or is damaged. Solution: Inspect and repair the clutch electromagnetic coil, and readjust the clutch clearance as specified. 2. Severe wear or looseness of the compressor bearing. Solution: Replace the compressor bearing. 3. Damage to internal parts or assembly of the compressor. Solution: Replace the damaged internal parts or the entire assembly. 4. Excessive or insufficient refrigerant. Solution: Remove excess refrigerant or add refrigerant. 5. The compressor's refrigeration oil level is too low. Solution: Add compressor refrigeration oil.
I've been driving for many years and have dealt with quite a few AC issues. Compressor noise is something that needs careful attention. Usually, the noise is caused by worn or loose compressor bearings, or sometimes by an aging belt that's either too tight or too loose, resulting in squeaking. Another common issue is insufficient or contaminated refrigerant, where impurities clog the system. If you notice unusual noises, don't turn on the AC right away—let it rest first. Check if the belt is cracked or loose and try tightening it yourself. If the refrigerant is low, you'll need a professional to add Freon—don't attempt to handle it yourself. Low compressor oil can also cause noise, so regular oil changes are crucial. I've had good results with some synthetic oils. Before driving, always check the belt and filter, and clean out dust to prevent clogs and extend the AC's lifespan. Ignoring these issues can easily burn out the compressor, and replacing one can cost thousands, so early repairs are more cost-effective. Don't wait until summer when you can't use the AC and suffer. This experience has saved me a lot of money and hassle, so I recommend checking the AC system during annual maintenance.
