Getterdun

Current problem: 75psi on high and low sides
Previous action: Have replaced compressor twice, and expansion valve once.

• First replacement compressor was cheap one from China installed due to leak. After installation AC gauge pressures were same as above. So, figured it was bad, and bought a Denso compressor
• After installing Denso compressor pressures on gauge were still same as above. Now figured it had to be the expansion valve.
• After installing the expansion valve pressures same.

Other: Holds -30psi vacuum for at least 15 minutes.

Have been working on this over a week now and would sure appreciate it if someone who has experience with AC work has an idea what I should do now. Thanks.

Tcheath87

I had the same problem with mine earlier this year and finally found the issue. It was a small hole in one of the lines. Can't remember exactly which one, but the hole was under the coolant overflow resevour. The hard plastic jug had rubbed a small hole in the metal part of the line. Hope this helps.

Getterdun

Solved.

The problem was that the white wire running from the climate control unit to the 3-wire connector for the compressor had a break in it. The climate control unit uses this wire to regulate the ground, and the voltage to the compressor's Variable Capacity Control Solenoid Valve. This valve controls the pressure output by the compressor. The solution was to run another wire between these two points. Now the AC works properly.

projektvertx

iTrader: (2)

Thanks for the update on the solution