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Old 08-22-2010, 11:18 AM   #14
j cAT
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Join Date: Oct 2007
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Re: Tahoe AC problem

Quote:
Originally Posted by benhiers View Post
thanks.I run it through the safe side of a ign hot wire,will post once I get a havc module and let you if that was the problem
since you fed the clutch with 12volts , at the compressor and it did not pull in I suspect that the clutch coil is defective. since this is an old vehicle replace the compressor...use new or a scrap yard part.

sometimes coils when they fail,,, slowly loose the ability to create a strong magnetic field. this is due to the windings shorting out. as the temperature increases so does the resistance. then there is insuffient magnetism to pull the clutch in after a period of time...
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