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Still Not Cooling - Replaced Compressor/Accumulator/Condenser/Orfice

mgmoore7 on Sun July 28, 2013 6:42 AM User is offline

Year: 1998
Make: Chevy
Model: S10
Engine Size: 2.2
Refrigerant Type: R134a
Ambient Temp: 90
Pressure Low: 90
Pressure High: 145
Country of Origin: United States

I had it in a shop and they said it needed a compressor. Several months ago it stopping cooling well, then quit altogether.

Yesterday, I replaced the compressor, condenser, accumulator, orfice tube. I flushed all lines as well as the evaporator with kit purchased from here. The evaporator would not pass any air at first but then broke free (this might be the key). Also, there was not a orifice tube in the evaporator. Either it fell out and I could never find it or it fell apart and is still in there but I could not find any sign of it (did not take evaporator out though so harder to be sure).

I put it all together, pulled a vacuum and it held. It took the 1st bottle fairly well. High side climbed slowly to over 150 and then as time went it fell to 140-145. The low side climbed to about 30-40 and the compressor kicked on and then climbed to about 90 and held there. The 2nd bottle took over 30 minutes (might have been an hour) to suck in, compressor was running whole time. No cool or cold air at all though. All pipes, accumulator, etc were still very warm to hot. It finally took the whole bottle. It needs about 28 oz.

At this point, I gave up. Obviously something is wrong.

Ideas? I could just try the evaporator and then other than pipes will have mostly a new system. Just hate to through more $ at it.



GM Tech on Sun July 28, 2013 7:42 AM User is offline

Do you have you gage set closed when checking pressures? If not yor are bypassing the system.

The number one A/C diagnostic tool there is- is to know how much refrigerant is in the system- this can only be done by recovering and weighing the refrigerant!!
Just a thought.... 65% of A/C failures in my 3200 car diagnostic database (GM vehicles) are due to loss of refrigerant due to a leak......

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