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a/c clutch engages a few secs, dieengaes, engages, disengages...

RicFlair on Wed June 16, 2010 5:53 PM User is offline

Year: 1998
Make: jeep
Model: cherokee
Engine Size: 4.0
Country of Origin: United States

my '98 jeep cherokee's a/c clutch would engage and disengage every few seconds. got to where sometimes the clutch would "catch" and would NOT engage, resulting in blowing only "uncool" air.

i just got a new compressor installed for about $500.

the a/ cnow works, but the clutch is still engaging and disengaging every few seconds. im afraid it will go out again.

anyone know the problem? thanks for the help. searched online and it led me to this site. figured id try here before i go back to the shop.


The Man.

TRB on Wed June 16, 2010 6:50 PM User is offlineView users profile

I would check the pressures and make sure the fans are working correctly! I would find out how much refrigerant the system was charged back up with. Make sure they also pulled a vacuum before charging. Also why was the compressor changed. Was the system flushed to remove oil & debris if not how much oil was added back.


When considering your next auto A/C purchase, please consider the site that supports you:

Edited: Wed June 16, 2010 at 6:52 PM by TRB

RicFlair on Wed June 16, 2010 9:50 PM User is offline

why was compresser changed? the mechanic said the clutch was broken and i may as well change the compressor, yadda, yadda, yadda. he kind of suggested that the compressor was bad as well somehow. i know when the clutch would engage and start running, everything was fine. it would just "stick" sometimes.

im thinking it went bad from a couple years of the constant on/off. now the new one is coming on/off as well, every few seconds. I dont know how to check the pressure(s) i may take it back to the guy and tell him what is going on. ? its working fine, i just dont want a brand new clutch/compressor to break bc of this (again).

NickD on Thu June 17, 2010 6:39 AM User is offline

Did you pay your mechanic to repair your AC or just to change your compressor? Sounds like the latter to me, and have no idea you were running it like that for a couple of years, sure isn't cooling running like that.

My approach would be to first test out your clutch circuit, if good, hot wire it to bypass the electrical and check out the mechanical condition of the system with pressures, if good, then start looking for electrical problems.

I don't understand this, in my line of work, can't charge for replacing expensive components that don't do anything, the system has to work and pass inspection and be recertified.

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