What Causes the Air Conditioning Compressor in a Buick Regal to Stop Working?
2 Answers
Buick Regal air conditioning compressor not working may be caused by the following reasons: 1. Compressor failure: Severe internal wear of the compressor leads to inability to function properly. Its primary role is to compress and circulate refrigerant, which means the compressor operates at high speeds continuously, making this one of the reasons for compressor malfunction. 2. Faulty temperature sensor or pipeline pressure sensor. 3. Lack of refrigerant (system leakage). 4. Air conditioning AC not turned on or insufficient temperature adjustment. 5. Air conditioning control module failure.
Last time I drove the Buick Regal, I encountered an issue with the AC not cooling. The most common reason for the compressor not working is insufficient refrigerant. After driving the car for three to five years, the refrigerant can naturally deplete or there might be minor leaks in the piping. Another possibility is a malfunction with the compressor's electromagnetic clutch—if that part fails, it won't engage and start at all. Additionally, if the pressure switch detects abnormal system pressure, it will automatically cut off the compressor to protect the system. By the way, I suggest you open the hood after ignition and listen for the clicking sound of the relay engaging. If there's no reaction at all, you should check the AC fuse in the fuse box. In this weather, having no AC is unbearable. What I usually do is turn off the AC, wait a few minutes, and then restart it to see if it can recover on its own.
