Took possession, yesterday of a 1997 B2300. The A/C wasn't working when I picked it up. I had one of those rechargers that I had bought but never used a few months ago. I set the dial and turned the truck on and the gauge was just moving back and forth with a clicking noise every few seconds on the truck. I pulled the trigger to start adding refrigerant and after a few minutes of recharging, the clicking stopped and the gauge started actually registering. I'm guessing it was completely out of freon. So I kept charging and checking until I finally ran out. The gauge was at around 40psi. Instructions said it needed to be between 55-50, I believe. I got in the truck and it was then blowing ice cold.

AWESOME!!!

I got in it this morning to take it to get it washed and when I would drive, it would get to where it wasn't blowing out at all and then it would push hot air out. When I would slow down, it would start back up again with cold air. It's just back and forth.

Any ideas or advice? Thanks, in advance. Later, QD.