I just bought a '97 Wrangler and the lady I bought it off had only put about 400 miles on it in 2 years...so it had sat quite a bit. Overall it runs pretty well, but the A/C doesn't blow cold. It blows and the compressor clicks on and off fairly quickly, but it remains warm. I assumed it needed refrigerant so I got a can that comes with the built in gauge and when I hooked it up it read "very low" so I started charging it. Pretty quickly it jumped to "over full" and I kind of panicked (I've never done this before) and started watching Youtube videos and found a few guys that said that all of this will happen if it is very low on refrigerant so against my better judgement I kept charging it and pretty soon the compressor started running constantly and the air started blowing cold. It was reading a normal level on the gauge and before I could breakout in a happy dance the compressor started clicking on and off again, the air went warm and the gauge jumped back up to "over full". Now I'm just confused. Has anyone else experienced this? Thanks in advance for the help.