Auto Ac Conditioning Compressor For Buick Excelle 1.6 OEM 9042934 Compressor assembly

The compressor is not working.

Electrical system failure: Insufficient battery voltage or fuse or relay failure may cause the compressor to fail to start. It is necessary to check the battery voltage and replace the damaged components.

Internal problems of the compressor: Wear or damage of mechanical components such as pistons and valves, as well as malfunction of the electromagnetic clutch, affect its normal operation and require professional maintenance.

Refrigerant management issues: Insufficient or excessive refrigerant dosage, as well as the mixture of air or moisture, can all cause compressor failure. Regular inspection and maintenance of the refrigerant are necessary.

System pressure imbalance: Abnormal pressure in the high-pressure and low-pressure areas of the air conditioning system causes the pressure switch to trigger the protection mechanism, resulting in the compressor stopping. Professional tools should be used to detect and adjust the pressure.

Control system failure: The electronic control module malfunctioned, causing the compressor to fail to receive the start signal. It is necessary to inspect the control module and make necessary replacements.