Gen 2 not blowing cold air?

[warrioralumni08]

Alright, so I never really got to find out if my ac was ever working, knew the heater was, but it stopped. Anyhow, when I got the car, had a bad clutch pulley, disconnected the ac lines, (yes I know I didn't I have to, but didn't know at the time) installed new clutch, no freon so, pulled the vacuum and everything at work, gave her 2 and a half cans, clutch never engaged. Come home, take the clutch off, take one shim out, engages, but turns on and off, on and off, stays on at most for 30 seconds, then on and off over and over. Bleed the high pressure line, freon is warm? Not cold like it should be? Shouldn't it always be cold when coming out? Anyhow, bleed it down to about 10 psi, installed two more cans, but I am at home, and my little a/c hookup would only fit on the dryer, so I install two cans through there, same result. On and off, over and over. Take it for a drive, and you can feel when the clutch engages and disengages. Add another shim, clutch never engages, seems like I can't get the shims right. Come home, bleed the high pressure line again, but only a little until the freon comes out, still warm. So I just left it alone. Any idea what could be wrong? Would a bad blend door cause this? Probably will add another shim, but a smaller one, and hopefully it will catch, and stay on. Should I go ahead and pull the vacuum again at work? Could never tell if it was leaking either.

 

[96_Lincoln_LSC]

As far as I remember, your only to fill in the Dryer can on the firewall, i had to add 3 cans when i pulled a vacumm on my car after replacing clutch assembly. and aftermarket AC line will only allow you to fill at the dryer no where else, you should not be playing at the high side, its supposed to be warm on that line. the high side is where it fluid is transported back to the pump and pushed back to the condensor. (im not an AC guy so I could be way off but im pretty sure its supposed to be warm there and the low side is the fresh charged going to the evap(under the dash) allowing the system to cool the car inside.) you should not be draining the system at the highside either. I believe the system is designed for about 3.5 Lbs of 134A.i added 3 can and my system is ICE COLD even on its hottest day .if your AC clutch is cycling too fast you sound like its very low on 134A. as you stated you only added 2 cans. this would be just enough pressure to trip the switch but not enough to keep it running.

 

[soduka]

If it's cycling on and off really fast it almost always means the system is low on refrigerant. It has just enough to kick on, but not stay on. Our systems hold a lot of refrigerant compared to most, it takes more cans than you think.

 

[warrioralumni08]

Well, problem solved. Found out today that the guy only put half a can in, because that's all it would take since the clutch was never engaging when he put it in. So, since I took a shim out, now it engages, so we filled it up at work, and everything worked as it should have. Whew, I was worried and frustrated!