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New compressor or not?

alchemist_bobtilton on Sat July 04, 2009 7:25 AM User is offline

Year: 1995
Make: Chevrolet
Model: Impala SS
Engine Size: 350/383
Refrigerant Type: 134a
Country of Origin: United States

Ok, General Motors B-bodies have a bad track record of losing their manifold/compressor hoses, because the factory routed the hoses too close to the control arm during assembly. Known fact. I didn't pay close enough attention to mine, and the darn control arm finally wore through my compressor hose. Anyway, last summer this happened, and I lost my complete charge and a lot of the oil (don't know how much, but guessing fair amount since right side of engine bay had good signs of the stuff) because of the abrupt discharge. I know since I lost a lot of the oil that it would be best to flush out the entire system: evaporator, condensor. I bought a new hose and orifice tube and accumulator. Now here's the question. I just didn't have time to get to the repair last year, and so for about one year plus, the system has been down and the compressor at least partially exposed to atmosphere (old hose still on car and there's just a small slit in it, but still allows ambient temp/humidity in). Should I replace the compressor??? It worked well before the discharge last year, but now that it has sat idle with likely some PAG oil in it, I am just wondering?

TRB on Sat July 04, 2009 2:15 PM User is offlineView users profile

Drain the oil and if the compressor is tight do to rust replace it. If not fresh oil and pull a good vacuum before charging. I would do a complete system flush with or without a compressor replacement.

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alchemist_bobtilton on Sat July 04, 2009 10:45 PM User is offline

Yeah, I was planning that. Flushing whether I replace compressor or not. I have to get ALL of the oil out since some came out and I don't know how much to put back in (unless I flush). By the way, how much should I put back in if I assume I get all of it out of the evaporator and condensor by flushing?

Thanks-

Bob Tilton

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