Originally Posted by FPKites
Did you jump the compressor when you filled it? I think the compressor has to be running in order to add. Could be wrong though.
No, u r right. compressor must be running to recharge. jumping low pressure switch will make compressor run if u r low on freon. make sure to purge line from guage to port before u add freon, otherwise u r sending a shot of air into system. not good!
without compressor running u will most likely show a too high pressure reading on guage. mine cycles on and off when low, i just give it a shot or two when it cycles on and compressor will stay running, and blow cold air.
a side question. has anyone had problems with the low pressure switch. if so, how hard is it to change out? i ask, because as soon as i jump it out i have cold air and i only have to give system a couple of short shots of freon (way less the a lb.) before low pressure switch is satisfied.