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A/C "moan" 1989 K1500. 350 tbi.
Recently put new AC compressor, drier, expansion valve, o-rings, pressure switch, etc. on the truck. Best I can describe the noise is a "moan" under the hood at a very specific rpm ONLY when the AC is running. Truck does not have a tach, but it happens around 25 mph, and is worse when i'm...- Arkansas89Chevy
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- Replies: 9
- Forum: Engine Performance + Maintenance
