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Originally Posted by intel_guy
My 99 1500 4x4 4.8 is not blowing cold a/c. I bought a can of recharge, the kind with an inline guage. I started to pump in some refrig, and the guage was reading 55 lb, but when the compressor kicked on it immediately dropped to 25 lb. When it shut off it went right back up to 55 lb. Any ideas ?
I bought a new compressor/evap/orifice off ebay last year and had it installed because I was haveing a bad noise coming from the compressor pulley (which actually turned out to be the a/c clutch).
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Well in the first them Wal mart recharge kits are death kits.
For anyone using them and can kill or injure you and your air cond system.
Here is what you need to safe and proper recharge it.
http://www.ackits.com/merchant2/merc...uct_Code=66773
http://www.ackits.com/merchant2/merc...e=DIY-STARTER1
http://www.ackits.com/merchant2/merc...ode=DIYADVANCE
Now are you just trying to recharge it this year or was it ever recharged and working last year after the compresser and stuff was replaced?
If recharge last year what was it recharged with?
Was the right air cond oil put in it? was it pimped down and a vacume pulled on it
Did that death kit you are trying to kill it with have any stop leak crap in it?
Is it a blend freon or the good R-134?
Tell us more and get a pressure reading on the high and low side with the proper recharge gauge at idle and at 2000 RPM with the compresser running?
And post back pressure readings.
MT