Engine Size: 2.8L
Refrigerant Type: 134A
Country of Origin: United States
My brand new pancake compressor is making a moaning noise when it is running. It has been professionally installed and I was told to have it flushed and a 500 micron vacuum pulled on it. Is that the problem or am I barking up the wrong tree, so to speak?
I must say that it was not doing it after installation last year. Thank you for any help on this problem
Oh no, how may time have we heard this! Can you tell us what all has been replaced? What was wrong with the last compressor that that you replaced this one with? Here is a link of what should be done when replacing a compressor: AMA Compressor Warranty
Moans/ groans/or buzz- are usually signs of a loose mounting bolt- or sheared off mounting bolt-- Those steel horseshoe brackets that mount to the engine- can have loose bollts. Have seen some so bad you can't read engine oil on the dipstick-- check the bracket that the compressor mounts to-- is it secure to front of engine block?
The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......
Edited: Tue August 18, 2009 at 3:58 PM by GM Tech
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