System has roughly 26-28 ounces of freon, I didn't mean 1-1/2 lbs. I added 2 cans plus a little out of a third can and stopped their since it was at 45 psi. 45 psi at idle, no fan blowing, just the mechanical fan. I have ac gauges, high side was 250ish psi.

Original compressor was leaking freon straight out of the compressor instantly so it has never even worked at all. Yes I vacuumed it for 45 minutes straight, was sucked down to 27 in hg, let it sit for 30 minutes and vacume never leaked. I put 8 ounces of oil in compressor before assembly, plus 2 an...

Ok guys think I found the fix, I went ahead and put a new drier and orphice tube (old tube was gummed up!) and now the truck pulled the refrigerant right in, can got cold and sucked dry pretty quick unlike my first attempt! What psi should it run at on low side? 2 cans got it at 40 psi, I added a li...

The thing is, I couldn't even get all of the first can in, because the low side pressure is at a 100 psi! Is it normal for liw psi to be that high on 1can?

Ok I just replaced compressor because ac would not hold freon. Evacuated the system and went to charge, freon was going in and finally compressor starts to click on and off very rapidly, the system finally stopped taking freon at about 1 can but the low side is at 90-100 psi while high side is at 15...