so I have a 01 gpgt and I recharged the ac and the compressor would never kick on, that is til I hit it with the end of a bat lol not hard just one little light tap, then it kicked on and the ac got colder than it ever has according to my dad. then it shut off after a couple min, I hit it again and it came back on for a few min longer. I have the system running at 45psi. that good? now I think when I get it to come on, it wont shut off? but it blows cold. if anybody has any info, please let me know. hopefully I don't need a new compressor! maybe a switch? im confused lol look forward to talking to someone