Posts Tagged: car AC compressor diagnosis

Common AC Compressor Noise and Their Causes

Step-by-Step Diagnosis of AC Compressor Noise Problems Quick Summary AC compressor noise is often the first warning sign that something is wrong with your vehicle’s air conditioning system. Common noises include; • Rattling • Grinding • Squealing • Chirping • Knocking • Hissing • Clicking. The causes range from worn compressor bearings and failing clutches to refrigerant issues, internal compressor damage, contaminated refrigerant oil, and loose mounting hardware. The key to proper diagnosis is identifying when the noise occurs—whether it’s present all the time, only when the AC is turned … Read More