Been working on the 1992 Buick r12 AC for over 2 months now - I have studied the charging procedure over and over - every single piece of hardware is new - held great vacuum . Did all my pre-checks....Today was the big day to finally charge and then ...flop.. With the car off, I charged one 12oz. R1...

There really isn't play in the connection - it will hold a vacuum...but I am just surprised that I can pull out the line going into the Accumulator - if I really want to...The nut that slides over the connection and threads into the Accumulator is over an inch wide - so its big..

Hi All, I have a concern about the larger line in the pic that goes into the accumulator. Even if I fully tighten and thread the fitting together, I am able to still pull the mating connection apart with my hands. Shouldn't the threaded coupling keep the line together tight enough so that I cannot p...

A general question about O-Ring sizes in the O-Ring kits that you can buy for your specific car (1992 Buick). How do you know what the correct diameter and thickness is of the O-ring that you are installing on the line connections ? It seems that there are different sizes that will fit - some tighte...

I installed the retro kit screw on my low and high valves to my old R12 system - even though I am keeping the car an R12 car. The reason I have them installed is so my loaner gauges will work (r134 fittings). Question for the Low side valve: Can I leave my lower/original Schrader valve installed and...

I don't have a sniffer so I was looking to use soap and water. would this method create enough pressure to use S+W?

Its an empty R12 system with Mineral Oil and UVDye installed - but I don't have access to Nitrogen - so I'd like to be able to pressurize with normal shop air. I know air 's got moisture in it but I have another Accumulator that I can put on (and ruin) in the process of leak testing. I can put the n...

Well, now I can't get the clutch to come back on...something is flakey...I'm going to try to get to the control head and test the volts leaving that ...

For no reason whatsoever, the clutch decided to come on when I randomly turned on the AC again!! When it did I checked the voltage again at the LPCO. I noticed that when the clutch came on I got 12V on the DARK BLUE wire and 0V on the light blue. I swapped the 2 wires on the back of the LPCO and it ...

I am getting only 9.7V at both wires at the LPCO and the same on both wires at the HPCO. To trace upstream, I traced/pierced the light green wire ( that is supposed to connect to a DRK GRN/YEL wire) up through the loom up right before the firewall - and got about the same 9.50V. ... I suppose the on...