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location of orifice tube

ZZDave on Wed November 05, 2014 3:38 PM User is offlineView users profile

Year: 1999
Make: olsmobile
Model: LS
Engine Size: 6
Refrigerant Type: R-134a
Ambient Temp: n/a
Pressure Low: @50
Pressure High: 115
Country of Origin: United States

I have a headache, 2nd return for this car. Now the "waffle plates" in the compressor are jambed I'm pretty sure. I'm not a whiz at GM vehicles. Normally the orifice tube is inserted in the high pressure inlet to the evaporator but when I first worked on this it was located close to the compressor in the high pressure line going to the evaporator. Replaced the compressor, orifice tube, dryer. Flushed evaporator and condenser, etc. used PAG oil, worked OK for a week then it came back and the orifice tube was clogged with crap from the old compressor. Replaced the condenser and this time it worked longer but is back. Both times I put the orifice tube in the place I found the old one. Now it's a major job and I'm putting a filter in the line. But, I keep wondering if the orifice tube is in the right place.

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retired Master Auto Tech....is it time for my nap yet?

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