Auto A/C noisy compressor troubleshooting chart

Auto A/C Compressor Noise Troubleshooting chart.

SYMPTOMSCONDITIONPOSSIBLE CAUSEREMEDY
Compressor NoisyAC compressor internal noiseBearing worn or damagedDefective cylinder/or shaftDisassembly and replace defective parts.
Magnetic Clutch Noisy.Rattling noise when magnetic clutch is not engaged .Bearing worn or damaged.Replace bearing.
Noise from pipingPiping not secured.Piping vibrating .Pulsating noise resonates into body.Secure piping.
Noise from condenserCondenser vibration prominent.Condenser mounting stay resonating with body .Secure by inserting rubber between stay and body.
Noise produced by bracket.Rattles when touched, continuous rattling heard when operating.Bracket cracked or broken.Mounting bolts loose.ReplaceRetighten bolts.
Idler pulley noisy.Clattering noise produced. Rattles when touched.Bearing broken.Bracket Cracked or loose.ReplaceReplace or retighten.
Noisy crankshaft pulley.Rattles.Improperly installed.Replace or retighten.
Belt NoisyBelt deflection excessiveBelt side surface wornBelt wornBelt wornBelt center misalignedWorn belt causing belt slipping on pulleys and tensionerAdjust tensionAlign centerReplace belt
Noisy belt tensionerSquealing belt and/or rumbling noiseTensioner bearing or tensioner spring weakReplace belt and tensioner
*Chart provided by Denso.

Do you need assistance inspecting a noisy a/c compressor ?

Call today and schedule an appointment to have your auto a/c system inspected.

Tags: ,

%d bloggers like this: