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Old 09-10-2010, 02:11 AM
automps automps is offline
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Re: 2002 chevy truck ac compressor noisy at times !!!

Quote:
Originally Posted by j cAT View Post
normally when a compressor fails you get noises that vary with load/temp. in your case its intermitent. it is possible the low pressure switch is not opening when pressures drop , the the compressor gets noisey with no/low refrigerent to lube the unit. remove switch and test for proper operation.
Going to check that low pressure switch next , I have a new compressor in the box , but hate to put it on not knowing the problem... Low pressure switch is fine... Looks like the old compressor is next !

Last edited by automps; 09-15-2010 at 12:31 AM.
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