A/C - Noise From Compressor Clutch Cover
84olds4SUBJECT AIR CONDITIONING NOISE NUMBER: 85-T-5
DATE: Sept.. 17, 1984
MODELS/YEARS 1985 NINETY-EIGHT
SECTION: 1D
CONDITION
A moan type noise may be experienced on some early production cars at off idle engine speeds with the air conditioning compressor engaged. The noise disappears when the air conditioning is turned off.
CAUSE
The noise is caused by resonance of the compressor clutch cover due to one of two reasons:
1. Improper torque of the three (3) dust cover screws.
2. Clutch drive plate spring rattle.
CORRECTION
Tighten the compressor clutch cover screws to 4-5 N-m (30-40 in.lbs.). If noise remains, install kit no. 2724325. This kit contains a torque dampened clutch hub and drive plate assembly and dust cover. If after installing the kit the moan is not corrected, it will be necessary to follow normal compressor diagnosis to correct the condition.