What Causes a Car Compressor to Stop Working?

1 Answers
LucilleRose
07/29/25 8:27pm
Here are the specific reasons why a car air conditioning compressor may stop working: 1. Electrical system failure. A short circuit or open circuit in the wiring directly disrupts 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 can lead to insufficient oil return, reducing lubrication and causing the compressor to seize or fail. 3. Mechanical wear of the compressor. Prolonged operation under high-speed and heavy-load conditions can cause premature mechanical wear of compressor components, rendering it inoperable. 4. Over-tightened drive belt. An excessively tight drive belt can directly prevent the compressor from running, so it's important to regularly check the belt's tension. Conversely, a loose drive belt can cause the compressor's power transmission to slip, resulting in intermittent cooling and reduced efficiency.
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