Asked by darver Aug 10, 2013 at 05:20 PM about the 2001 Chevrolet Suburban 2500 4WD
Question type: Maintenance & Repair
my compressor belt broke -idler pully was free -he replaced the belt -a/c worked fine @idle but chattered when he increased the rpm /it sounded like the clutch was cycling on and off very rapidly .he wants to replace the compressor . if compressor is bad why is it good @idle
Fordtudor37 answered 10 years ago
Did you check for codes ? (Always check for codes, like breathing to live). "At Idle", there is no "Load" put on the compressor belt or "clutch" for the most part. When you rev up the engine, turn on the A/C system or do both, a "load" is put on the clutch and pulley causing the belt to work harder to spin the pulley. The A/C clutch or the electrical signal being sent to it, have issues based on your description of the problem. Did you ask him if you can replace "just the A/C Compressor clutch" ?
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