I believe the experts on this board would strongly advise against introducing any type of sealer into your AC system, and I agree. Sealers and other "miracle enhancers" often clog-up components and create additional and costly problems that weren't there before. Cans with the trigger, hos...

Although I'm not "an expert", I would sure want to know the high and the low pressures at about 2000 rpm with compressor engaged. You just bought this - maybe previous owner added sealer, maybe clogged stuff up. If mine, I'd replace the orifice tube and accumulator, and add by weight the c...

Have you tried to warm the outer fitting with a propane torch? And then maybe try to turn the flexible line's fitting?

Think I'll go ahead and fully charge the system this week, then borrow or buy a sniffer if we run into problems. We do have a 12-pack of R134a! I suggest that you add some UV dye to the system, then you could use a UV light and goggles to find a leak. REMEMBER: DO NOT ADD ANY SEALANT OR REFRIGERANT...

Sounds like a leak. But first make sure that the leak is NOT in your gauge set/fittings.

It would be easier and less expensive to have a "real AC" shop find the source of the leak(s). Better than throwing parts at it.

I hope the dealership didn't charge you money for the non-fix. That would be unjust enrichment, the legal term. You were paying for a fix.

I do tighter than finger tight, but not gorilla; so that's not much help. With an O-ring, the compression forces the O-ring to expand and seal. So I'm saying firm, and when you pull a vacuum or check with bubble solution after refrigerant fill, you should know if you need to tighten a tad more. Use ...

Wyattgc wrote:Would I need less r12 if I did seal off the rear ac?

Absolutely !!! And likely the new R4 compressor would last a ton longer. It's lower lifetime in dual-AC vehicles has been documented due to liquid refrigerant from the rear getting back into the compressor.