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Low side 80 high side 0

donaldwitt on Mon August 15, 2011 3:51 PM User is offline

Year: 1984
Make: chevy
Model: wagon diesel
Engine Size: 350
Refrigerant Type: r12
Ambient Temp: 72
Pressure Low: 80
Pressure High: 0
Country of Origin: United States

vacuumed system, it leaked down. thought it was done and pulled line off the accumulator. Vacuum left in system when I did this sucked washer into accumulator which I was able to retrieve. But now I am getting no reading on the high pressure side and as soon as I put any gas in it goes immediately to 80 lbs on low with nothing on the high side. I have rechecked both the filter on the suction side at the compressor and the new inline filter ahead of the OT, that I installed and both are clear. Any ideas as to why and where else I might have a restriction?

thnks

HECAT on Mon August 15, 2011 4:55 PM User is offline

Condenser?

High side gauge not connected properly?

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JJM on Mon August 15, 2011 11:56 PM User is offline

You sure you have the right side fitting for the high side. You typically need a GM high side adapter. No way are you going to have 0 PSI on the high side and 80 PSI on the low side.

Joe

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