Signs of a Leaking A/C Compressor
The A/C compressor pressurizes the refrigerant in your A/C system, turning incoming refrigerant into a hot, high-pressure gas. It also pushes the refrigerant throughout the system, allowing it to change states and cycle back to the compressor. When you activate the A/C system from the cabin, the A/C clutch locks and engages the compressor. The clutch and A/C compressor are driven by the serpentine belt or a dedicated A/C compressor belt as the engine spins, providing the power needed for it to generate pressure and move the refrigerant through its various states. A/C compressors may wear out with age and use or may suffer damage due to debris in the system or a lack of refrigerant pressure or lubrication. If you hear squeaking or squealing sounds from the A/C compressor, you may have a failing compressor, belt, or clutch pulley. Modern vehicles may also have A/C pressure safety switches that disable the compressor if the refrigerant pressure in your A/C system gets too high or low. This is usually an indication of an A/C system clog, leak, or failing A/C pressure switch. If your A/C system is not producing cold air, or if the A/C compressor is not activating, check your A/C compressor clutch, belt, and clutch relay to make sure it's engaging and powered correctly. If all of these parts are working as they should, it may point to a problem with your A/C compressor, and it's often recommended that your A/C orifice tube or expansion valve and your receiver-drier or accumulator be replaced if your A/C compressor has failed. For your next A/C repair, shop at O'Reilly Auto Parts. We carry replacement A/C compressors, clutches, relays, and refrigerant for a complete air conditioning repair.
