'95 K1500 Air Conditioner Pressure - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 07-24-2004, 10:35 AM
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\'95 K1500 Air Conditioner Pressure

Does anyone know what the high side A/C pressure should be on a '95 K1500 with 5.7? Generic book I have said 28 psi on low, 320 psi on high, but I think that's way too high. I just redid the system and can't get over 185 on the high. I'm no a/c expert but it won't take anymore freon so I was just wondering what's up.
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post #2 of (permalink) Old 07-24-2004, 08:08 PM
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Re: \'95 K1500 Air Conditioner Pressure

The retro fit kit I did on my truck has a guage that says not to go over 120.
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post #3 of (permalink) Old 07-28-2004, 12:57 PM
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Re: \'95 K1500 Air Conditioner Pressure

Your high side pressure should be roughly 2- 2.2 times ambient temperature (R-134A). At 100F ambient your high side should be 200-220 psi
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