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Originally Posted by OrangeCrush
Well, things aren't as they seem. When I got my ac redone, I thought it was great. The problem was it was only in the low 80's with low humidity for those few days.
Now that it's back in the high 90's with high humidity, my AC sucks. I took it back to my tech friend at a dealership and the low pressure went back up. He thought perhaps at some point too much oil had been installed so he drained it.
After checking everything out, they end up replacing the compressor, accumulator AND clutch fan and though it's ice cold while moving, it still sucks at an idle.
I'll probably have to add an aftermarket fan to keep the condenser cool... all this from checking out an orifice.
Guess we'll see where it goes from here...
Mark
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Mark,
the fan won't work. trust me, I know things.
I am guessing you idle at or just below 600. It's too f'ing low for the compressor. What ever programmer (I know the Diablosport allows you to do it) will allow you to change the idle RPM while A/C ON, it's worth getting.
If I can get Diablosport to fix my programmer I am going to adjust my idle speed back up.
Paid a lot more attention to it just recently because on Thursday in the middle of nowhereville 100-degree Texas, one of my A/C lines popped. The compressor had let go and dumped trash into the system. So I paid $1300 to get it bandaided back together with a manufactured hose, Chevy dealership compressor but since the drier on the H2 is unique, I couldn't get it replaced and I might still eat the new stuff. So, I don't have a warranty on the new stuff just so I could get some A/c gong for the K-Rocks event.
Anyway, we were going over it after the repair and with my programmer hooked up and monitoring the RPM and other diagnostics, the A/C blows cold at about 650 RPM as the lowest and it doesn't seem to pull any more on the truck while in drive than before. I can hold the pedal just right and have the A/C blow cold while stopped at a light.
