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AC Problem

Old May 29, 2013 | 04:52 PM
  #1  
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Year: 2000
Model: Cherokee
Engine: 4.6 stroker
Default AC Problem

Ok so it's gonna be in the 90's starting Tommorow. I just found the ac relay in the console, plugged it in . the compressor comes on for 2 seconds then cuts out for about 10 seconds.it keeps cycling steady like this.the air blows cool like its trying.I checked R-134 pressure it was very high on my cheapo gauge
I dumped(environmentally correct) some now it's in the normal range. No change.the e fan does work. The compressor cycles even when it's on the heat setting.prob why PO pulled the relay
Where should I start diagnosing?any
Suggestions?
2000 XJ sport
4.0
Auto
Thanks
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Old May 29, 2013 | 06:13 PM
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Year: 88
Model: Comanche (MJ)
Engine: 4.0 HO
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What was the pressure? And we're you on the low side or high side?
Low side has smaller valve..
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Old May 29, 2013 | 06:31 PM
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It was 130psi

I just checked pressure with engine running
Turns on at 45psi
Turn off at 20 psi
As soon as it gets to 45 the clutch engages
For 2 seconds
Thanks for any help!
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Old May 29, 2013 | 06:33 PM
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Oh yeah

My interdynanics gauge only fits lo side
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Old May 29, 2013 | 06:34 PM
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
Default

Originally Posted by muskrat
It was 130psi

I just checked pressure with engine running
Turns on at 45psi
Turn off at 20 psi
As soon as it gets to 45 the clutch engages
For 2 seconds
Thanks for any help!
Sounds like needs more Freon.
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Old May 29, 2013 | 06:40 PM
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Originally Posted by freegdr
Sounds like needs more Freon.
X2 usual reading on a mild day in my area are 35-40 low side and 150-200 on high side.
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Old May 29, 2013 | 06:42 PM
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I have a small can with 3 ozs R134

And8.5 ozs pag oil
I'll try that
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Old May 29, 2013 | 07:00 PM
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Year: 1989 xj sport 2dr
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Engine: 12 hole bosch Injectors
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Originally Posted by muskrat
I have a small can with 3 ozs R134

And8.5 ozs pag oil
I'll try that
No oil ....
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Old May 29, 2013 | 07:08 PM
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Now it's 64 psi

24psi
It's cycling 4seconds on 8 seconds off
Am I getting warmer? No pun intended!
Thanks
BTW it was only engaging for 2 seconds when it was way overcharged (in the red on the gauge warning !)
I'm doing this at the local bar! Ha
DJM
Attached Thumbnails AC Problem-image-3183624473.jpg  
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Old May 29, 2013 | 07:25 PM
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Dang wish I seen the no oil post

Should I dump some an get a big can of 134?
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