Question about 1989 Chevrolet C2500

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Air conditioner compressor

Compressor fails, have replaced six so far. Original R4 got 75000 miles befor problems began. Have replaced compressor with new GM,receiver dryer, orifice, condenser. This is a 89 Suburban with rear air, have replaced the expansion valve in rear, no leaks, compressor(new) is noisy.
Any suggestions??

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The corvettes have this unit in them same problems.
Noisy compressors most of the time this comes from
improper installiation. either of the compressor its self or the clutch( which could be a paint to do with or w/o the tool). The other problems I've found with the R4's is the tech overfills them with oil and lastly the tension of the belt it spins off of is either too loose or too tight. Check all of this out before going for another compressor.

Posted on Mar 21, 2010

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