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A/C compressor cycling on for only 2 sec.

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Old Jun 15, 2013 | 09:55 AM
  #1  
FNG's Avatar
FNG
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From: Boise,Idaho
Year: 1995
Model: Grand Cherokee
Engine: 318
Question A/C compressor cycling on for only 2 sec.

It cycles on for 2 seconds, then disengages for ten seconds and back on again for 2. I ran some searches and read about a cycling switch? Does anyone think this might be what is wrong with mine? Where is the cycling switch and is it something I can buy at the auto parts store? Thanks for reading.
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Old Jun 15, 2013 | 10:10 AM
  #2  
dnuccio's Avatar
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From: Ahwatukee, Phoenix, AZ
Year: 1995
Model: Cherokee
Engine: 4.0L
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i would guess low freon
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Old Jun 15, 2013 | 10:14 AM
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From: Columbia, SC
Year: 2000
Model: Cherokee
Engine: 4.0L
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Does it cool?

The compressor will cycle based on internal pressure and ambient temperature. Mine cools great and sometimes short cycles like that.
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Old Jun 15, 2013 | 10:20 AM
  #4  
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From: Boise,Idaho
Year: 1995
Model: Grand Cherokee
Engine: 318
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when it is not engaged it shows high pressure, then engages for a couple sec. the pressure starts to drop, I had it recharged last year so unless it leaked over the winter I assume it has a good charge. it does not blow cold air. I have one of the home recharge bottles but the compressor does not engage long enough to fill it. Thanks for the help.
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Old Jun 15, 2013 | 01:03 PM
  #5  
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Default same issue in 2001 grand cherokee 4.7 ltr

I am having the exact same issue. no cold air. cycles for 2 seconds, a single popping sound, pressure drops completely off, then cycles again, building pressure, the pop, and pressure drops off. any recommendations would be greatly appreciated!!
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Old Jun 15, 2013 | 01:08 PM
  #6  
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From: Plymouth, MN
Year: 1998
Model: Grand Cherokee
Engine: 5.2 V8
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If your freon is to low the compressor won't run. My XJ did the same thing. I slowly dumped freon in and it started running.
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Old Jun 15, 2013 | 01:47 PM
  #7  
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From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
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Originally Posted by JR_01XJ
If your freon is to low the compressor won't run. My XJ did the same thing. I slowly dumped freon in and it started running.
Exactly leave it hooked up longer..
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Old Jun 15, 2013 | 10:25 PM
  #8  
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From: Columbia, SC
Year: 2000
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Originally Posted by freegdr
Exactly leave it hooked up longer..
Yep. Be careful not to overcharge. The xj doesn't take much freon. 20oz (1.25lb) for my '00
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