Why is the car air conditioning compressor not turning?

[JosiahLynn]

Possible reasons for the car air conditioning compressor not turning include: 1. Insufficient refrigerant, which causes the computer to automatically stop the compressor. In this case, simply adding a certain amount of refrigerant can solve the problem. 2. It is also necessary to check whether the power supply and grounding of the air conditioning compressor are normal, whether the engine radiator and condenser are clean, whether the engine temperature is too high, and whether the air conditioning computer is working properly. These conditions can all cause the air conditioning compressor to stop working. 3. The primary reason for the compressor not working is prolonged use of the air conditioning system. Over time, severe internal wear can lead to the compressor failing.

[MacMatthew]

Having driven for so many years, I've seen quite a few cases where the air conditioning compressor won't engage. The most common issue is a blown fuse - just open the fuse box, locate the corresponding position, and give it a gentle press to test. Another frequent problem is poor electrical contact, such as loose connectors or aged wiring causing a short circuit that prevents the signal from reaching the compressor. The compressor itself might be faulty too; if you don't hear a clicking sound when pressing the AC switch, you should suspect damage to the electromagnetic clutch or mechanical components. Insufficient refrigerant is also a major factor - when the high pressure is too low, the system automatically shuts down. When encountering such faults, never force it to work; go straight to the repair shop and let the mechanics test it with a multimeter. Regularly checking refrigerant levels during maintenance can prevent many troubles. Safety first - don't wait until summer when it's unbearably hot to take action.

[LeRuth]

My car's AC stopped working recently, and the compressor wouldn't start at all. I thought it might be a relay issue, checked the fuses and they were fine. Turned out the coolant had leaked too much, causing the pressure to drop so low that the system automatically shut off the compressor. Electrical issues are also common, like aging wires or loose connectors, which can interrupt signals. The compressor itself rarely fails, but if you hear strange noises, it's probably a bearing or clutch problem. You can do a simple check yourself: start the car and turn on the AC – if you don't hear a click, turn it off immediately to avoid damage. I took it to the dealership right away, and they handled it professionally. They recommended checking the coolant concentration every season to save money and hassle.

[AylaDella]

If the air conditioning compressor won't turn, it usually stems from control circuit issues. A blown fuse needs replacement, and relay failure can also cause signal interruption. Another major risk is refrigerant loss - the pressure switch triggers protection and stops operation. Compressor failures themselves are uncommon, but if there's abnormal noise during startup, it may indicate internal mechanical damage. For the electrical part, check wiring connections and voltage to ensure proper input signals. When handling it myself, I inspect fuses and fluid levels first; if unresolved, I take it to the shop for professional diagnostics. Regular system maintenance can prevent such troubles.