Is that the low or high side reading? Did you read it when everything was running?

it was the side where u put the r-134 in it wasnt running

Follow the guidelines above to get good pressure readings. When the system is at rest, the only thing that can be measured is the purity of the refrigerant.

A/C systems are very touchy and can be influenced by many little things, and you increase the amount of variables when you retrofit a system.

I did the same thing on my 89 Bonneville 5 years ago before I knew much about retrofits and a/c. I had a leak on the low side schrader valve also. I took out the valve stem and screwed an R-134a valve with valve core on top of where the old valve was. I used the cycling time of the compressor to get a feel for whether or not the system was full. It was still running great when I sold it in 2000.

Looking back, I skipped a bunch of steps like checking the high side, vent temps, cooling the condensor, vacuuming, replacement of the accumulator, etc. I feel lucky that I got it right!

Ester oil is important in R-134a retrofits. The existing mineral oil in the system will either all leak out or sit in low points in the system. It won't move around with the new R-134a. The Ester will.

You and I were fortunate, but I have heard more horror stories than successes with do-it-yourself retrofits.

heres what i did today:

i sat in my car, and took the a/c switch and went from off on off on off on off on, and after awhile, the compressor kicked on, and cold air started coming out. after a minute or less, it kicked off, and never went back on.. what the!!!!

Rob

help?

It'* hard to say without a good diagnostic. May be the A/C clutch, low on freon, pressure cycling switch, relay, etc... May be time for a visit to a good A/C shop.