Hey everyone. I finally got back to looking at my AC. I determined that the system is completely sealed and there is residual pressure from R12, but it just BARELY moved the needle. So it was sealed, but basically empty. I have manifolds and tried to load refrigerant to the proper pressure. Everything I read says that 35-40 is the right pressure, so I went to 40 and it blows cold. YAY! Afterwards, I did some more looking to think about a long term change to a more efficient compressor and found a web site talking about correct R12 pressure being 25 psi low side when the compressor is cycling. Now I am worried I overcharged. I will try to hunt down a manual tomorrow, but I know the Clymers and Hanes can be iffy. Does anyone have a shop manual for a circa 1983 Econoline, or just know what the correct low side and high side pressures are for my setup?
Thanks for any help you can offer, folks.
Jose
