FoMoCo
Full Access Member
I am having A/C problems, not cooling very cold and building high pressures. I have changed out the evaporator, orifice, and drier. I had a leak on the high pressure port and I broke the high pressure sensor, So the system had no freon, I fixed the above items and I pull vacuum on the system. The vacuum held for awhile, but my cheap Harbor freight low side quick connect was the cause of the leak.
Anyway, the system had no freon and I just pulled vacuum. I went to charge the system, I added 1/2 a can of r-134 as a liquid on the high side. I then closed the high port and started the truck to finish the 1st can. I started to add the second can, and noticed the compressor would not disengage. Then the high pressure would go past 400 and the high pressure switch would cycle the system off. So at this point I had 1 1/4 cans in the system. I have 2 electric fans mounted on the condenser and the clutch fans was moving good air. Ambient temp around 97, and equalized pressures around 120-125.
I release some coolant and got the pressures under control about 280 high and 45 low. The problem is the system seems clogged since it should take almost 3 cans. Do you think the condenser is clogged? or is the compressor the problem (turns smooth by hand)
Also what color orifice should I use, I ordered red and blue, or should I use the white?
FYI, my truck is the 1994 idi factory turbo with factory air
Anyway, the system had no freon and I just pulled vacuum. I went to charge the system, I added 1/2 a can of r-134 as a liquid on the high side. I then closed the high port and started the truck to finish the 1st can. I started to add the second can, and noticed the compressor would not disengage. Then the high pressure would go past 400 and the high pressure switch would cycle the system off. So at this point I had 1 1/4 cans in the system. I have 2 electric fans mounted on the condenser and the clutch fans was moving good air. Ambient temp around 97, and equalized pressures around 120-125.
I release some coolant and got the pressures under control about 280 high and 45 low. The problem is the system seems clogged since it should take almost 3 cans. Do you think the condenser is clogged? or is the compressor the problem (turns smooth by hand)
Also what color orifice should I use, I ordered red and blue, or should I use the white?
FYI, my truck is the 1994 idi factory turbo with factory air