The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - A/C Compressor - Please help diagnose (lots of details for experts)

GMC Canuck · 06-09-2012, 08:15 AM

what is squealing? Is it the belt slipping or the clutch itself slipping?
can you turn the compressor over by hand? It should be a little stiff if there is refrigerant in the system or turn real easy if the system is empty.
What did you flush with? Is it possible there was some flush trapped in the system? Some of the commercial ones are pretty nasty and if there is any left in the system it will thin out or wash out the compressor oil.

06-09-2012, 08:15 AM	#6
GMC Canuck Registered User Join Date: May 2012 Location: Ingersoll, Ontario Posts: 93	Re: A/C Compressor - Please help diagnose (lots of details for experts) what is squealing? Is it the belt slipping or the clutch itself slipping? can you turn the compressor over by hand? It should be a little stiff if there is refrigerant in the system or turn real easy if the system is empty. What did you flush with? Is it possible there was some flush trapped in the system? Some of the commercial ones are pretty nasty and if there is any left in the system it will thin out or wash out the compressor oil.