My air conditioning does not work. I'm thinking about retrofitting r134a instead of the old r12 as it's easier to get hold of and it's cheaper to replace if there's a slow leak. My car was repainted 25 years ago, so if there were any stickers on the engine bay or hood about the A/C system and the pressures, they've been covered long ago. I have a 1982 Chrysler Lebaron with the 2.6L (and an automatic... idk if that would help or not, I don't even think they came with anything else.) Anyway... All of the old coolant has been leaked out over the last 20 years that it had not been charged so now it just needs vac'd down and pumped back up with some oil and r134a. Here's the thing, I have no clue how much refrigerant it took with r12 (factoring in the conversion ratio of course), or how much oil it was supposed to have. I also heard that it needed something called Pag oil. Apparently the older style oil it took back in 1982. I also need help finding the high side port. I found the low side but not the high side. I'm sure I will find it but it would help if someone knew so I didn't have to spend a whole afternoon trying to find it. In recap... Original r12 coolant pressure (r134a retrofit pressure or conversion ratio if you want) Pag oil quantity, and maybe location of high side access.
Thanks,
Aaron with the Lebaron