Noise Diagnosis

Compressor related noise is generally system related and not always the compressor itself. Prior to replacing the any components it is important to feel lines, hoses, and brackets. Many noises may stop while being contacted. The following symptoms of noise and potential causes should be checked prior to component replacement:

VIBRATION/RATTLE

^ Belt mis-aligned in groove.
^ Belt tensioner.
^ Lines/hoses contacting other components.
^ Brackets loose
^ Other drive components.

MOAN

^ Improper refrigerant charge.
^ Loose or mis-aligned bracket.
^ Lines/hoses contacting other components.
^ Other drive components.

SCREECH

^ Worn serpentine belt.
^ Compressor bearings.
^ Compressor clutch.
^ Compressor alignment.