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Got a 2008 gl450 90,000 mi with a a/c issue, is blows warm air, so far I vacuumed it an recharged it to specs, tested pressures and read 100 on discharge side and 65 to 70 on suction side, I don't believe I have a Leak! I put a scanner on system This is what i read through the scanner
but this should not affect my temps? Scanner also said pannel was ok! Rcv valve? where can I get a book on the whole system layout? thank you!
I recharged already, yesterday afternoon was hot so I put my gauges on, and found 125 on the high side and 55 on the low, cooler but still warm,,
but no matter how much I recovered, low side was 50 to 70, wouldn't that mean compressor is working?
It is working but is going bad, usually the pressures should be between 150-175 psi in the high side and between 30-45 psi in the low side.
At this site, you can find a pressure table according to the outside temperature --> https://www.acprocold.com/faq/r-134a...ressure-chart/
It is working but is going bad, usually the pressures should be between 150-175 psi in the high side and between 30-45 psi in the low side.
At this site, you can find a pressure table according to the outside temperature --> https://www.acprocold.com/faq/r-134a...ressure-chart/
I just finished recharging my system. 14 years / 185k miles I guess it's to be expected. The compressor wasn't used much, being as it was in southern Cali most of its life.
It was a little tricky figuring out how the manifold works. Hint: The gauges read whether the manifold valves are open or closed.
Anyway, at startup the low side pressure was about 40 psi, the high side about 125. I added a can of stop leak, which put in one oz R134, two oz oil. I figured the system probably wanted oil, having seeped out refrigerant. Figured out I can charge the can with higher pressure refrigerant from the high side, then blow the oil out into the system. Probably don't want to do that when the high side is 350 psi, though.
Proceeded to add a full 12 oz can plus another six oz. This got the high side up to 325. I wasn't comfortable with the temperature; it was 100 on the sunny wall of the garage but the dash thermometer read 90, so I vented a bit of gas to go back down to about 280. I did something right because the engine cooling fan promptly went into super duper overdrive mode.
Throughout, the low side pressure refused to go above 40 psi. I'm guessing that's within range.
08-24-2021 | 11:52 AM
