Ok a long time ago, in a galaxy far away.... Oh wait wrong story. Ok a long time ago, about 3 or so years we bought our 2000GTP and the AC did not work, I had a curious -10 display on the Climate control, came here to find out it meant the outside temp sensor was bad and that was why the AC was not working, replaced that and it worked amazing for a year or so, then we lost high gear in the trans and parked it for a year, until we had the $2000 to get a new trans. Fast forward to a few months ago, we got the car back and the AC no longer worked. I asked the transmission shop and he swore they did not touch the AC nor did they discharge it. Well on a hunch I picked up a couple cans of refrigerant and a cheepo (no gauge just a hose with fittings) AC Filling line. First can went in, and the compressor clicked a few times during filling but didn't fire, 2nd can in, compressor came on and I thought everything was going good. I jumped in the car and warm air from the vents, ugh... then I happened to wave my hand over the passenger side vent and it was blowing cold. What the HECK, I turned the dual Zone on and off, no change, I spun the temperature dial on the passengers side to full hot, which kicked the dual zone back on, and the vents went from cold to warm, then I did the same with the drivers temp knob, it went from luke warm to hot, then I spun it back to cold and it went from hot to luke warm?

I am really confused, can anyone comment on the dual zone system, if you are on the edge of having enough refrigerant, will it run cool on the passenger zone, but not be getting cold enough to cool the 2nd part of the system? Am I just nuts?

The cans I am using are the smaller 16oz cans of IIRC 12a.

If I can figure out what I did with my good recharge lines that have gauges, I will be able to tell you the pressures, but I have been doing AC charges on old cars long enough to gauge (pun intended) the compressor cycles to get by in a pinch without them. Kind of like setting ignition timing without a gun in a pinch.

Any suggestions on this car will be great appreciated. If it makes any difference I am in Canada. The car is a Canadian car, 2000GTP with the Dual Zone Climate Control, digital read out for what temps you want on the pass anger and driver side. Also displays the Exterior temperature.