What Causes a Car Compressor to Stop Working?

[VanPaul]

Here are the reasons why a car air conditioning compressor may stop working: 1. Electrical system failure. A short circuit or open circuit in the wiring directly cuts off the power transmission path, preventing the electromagnetic clutch from properly controlling the compressor's operation. 2. Lack of refrigerant. The refrigerant mixes with the compressor oil and circulates back to the compressor through the system. If the Freon in the refrigerant is depleted, it will lead to insufficient oil return, reducing lubrication and causing the compressor to seize or fail. 3. Mechanical wear of the compressor. Prolonged high-speed operation under heavy load may cause premature mechanical wear of compressor components, rendering it inoperable. 4. Over-tightened drive belt. An over-tightened drive belt can directly cause the compressor to seize and stop running, so it is important to regularly check the belt's tension. Conversely, an overly loose belt will cause the compressor's power transmission to slip, resulting in intermittent cooling and reduced efficiency.