Been doing some reading in the Audi forums from people who have charged these systems. Some are saying the proper procedure is to charge only through the high side. Could that be my problem? They’re doing this by warming the R134 warmer than the high side system (car is OFF to avoid blowing the cans...

Here’s the listing from the compressor I bought - Now I see where it says - “shipping oil only, must drain and refill to specs” - uh, whoops I guess, to be fair, I bought this in 2018 and it’s sat without the compressor kicking on since then. The compressor can’t have been engaged for more than 15 m...

Thanks so much for the responses! This is an odd build in that it is parts of a number of different cars. Here’s the engine bay with some stuff out of the way (including the ducting that lives above the condenser and radiator at right) http://castledb.me/images/2020/01/19/F0B9F3D1-8300-4EF1-86CE-E1E...

How did you charge it? Assuming the charge is correct now, a high side of only 100 PSI suggests that the compressor isn't up to snuff unless it's a variable-displacement type compressor that's partially or fully de-stroked at the time of testing. Hi John, I used a gauge set and charged through the ...

Hi all! I’m a car junkie and do all my own work but have always had others deal with my AC equipment. That changed this weekend as I now have 4 cars that need AC work. The one in question here is a 95 Audi 90 quattro with a 20 valve Turbo inline 5 motor swap. It can’t seem to build high side pressur...