Who KNOWS A/C???

[nlzmo400r]

Ok, heres the delima. When I purchased my 240, it didnt have A/C (seized compressor). I am going to florida this wednesday morning, and want A/C for the trip. I went to NAPA,replaced the compressor and dryer, and converted to r-134a. I pull a vacuum only to find I have a whole in the high pressure line......had to go to Nissan, and paid $80 for a new high pressure line. Got that line in, pulled another vacuum to find a leak in the low pressure line...junkyard trip and $20 later, got a new low pressure line.... Vacuum looks good (25 under) so I add charge oil, then charge it with freon. The compressor kicks on and off like it doesnt have enough freon. The low pressure line got cold, but the vents never blew cold air. I return to napa and the guy tells me its probably my Orpherus tube (dont know how to spell it,basically fancy name for expansion valve). i replace that, pull vacuum again (agian 25 under) and charge it only to find that the compressor wont stay on. It kicks on and off as if it doesnt have enough freon. I bleed some out slowly with the car running and a/c on...finally the compressor stays on, however NO COLD AIR, and the low pressure line isnt getting cold anymore either, whats the problem??????????????????????- Thanks in advance, - DESPERATE FOR A/C