If you've replaced your PCM for stalling... - JeepForum.com

View Poll Results: The PCM is for whaich engine?
4.0 75 83.33%
5.2 13 14.44%
5.9 2 2.22%
Voters: 90. You may not vote on this poll

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post #1 of 45 Old 02-21-2012, 12:10 PM Thread Starter
ZeeJay1997
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1997 ZJ 
 
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If you've replaced your PCM for stalling...

and you know the PCM solved your problem, what engine do you have? This is for the 96-98 ZJ.

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post #2 of 45 Old 02-21-2012, 12:18 PM
MeanGreenZJ
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I have seen this issue on the 96-97 4.0L (they use the same PCM). I have yet to see this issue on a 98 4.0 or a 96-98 V8.

The WJ's have many PCM issues as well, but that's not what you asked.
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post #3 of 45 Old 02-21-2012, 12:37 PM Thread Starter
ZeeJay1997
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Quote:
Originally Posted by MeanGreenZJ View Post
The WJ's have many PCM issues as well, but that's not what you asked.
Until I went and researched it, I was under the impression that this form/fit PCM stopped with the ZJ. Come to find out, it wasn't. Since this is the ZJ forum, I think it will be okay.
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post #4 of 45 Old 02-21-2012, 01:08 PM
Oldfrog
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2007 WK 
 
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Location: Louisiana/Texas
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This is my second one. I guess I'll have to budget for a new one every year or two now and keep a spare handy. Jeep should have done something about this issue long ago.

2007 5.7 Hemi, Ltd. QD II -
1997 ZJ, 4,0 select trac, Up country, track lok.
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post #5 of 45 Old 02-21-2012, 11:33 PM
rooster51
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1997 ZJ 
 
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Advance Auto PCM lasted 6 months, Kolak PCM still going strong.
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post #6 of 45 Old 02-22-2012, 04:29 AM
coralman
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Lol, the WJ voltage regulator died after I changed spark plugs. Thats all I did..change plugs.
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post #7 of 45 Old 02-22-2012, 08:01 AM
JS97ZJ
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It seems odd that so far the poll results show only the 4.0 is effected. ??
Like Meangreen stated, the PCM's are basically the same.

A few years back there was a recall for the PCM's in late model JGC. The potting compound used in the case was so dense that fluctuations in temperature was causing the circuit boards to actually crack. Jeep was forced to replace them.

Since there are just so many manufactured for each model series, what good does it do to make them un-repairable. Anyone interestested in keeping one of these, as a collectable, better stock up PCMs.
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post #8 of 45 Old 02-22-2012, 10:13 AM
gt88
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1996 ZJ 
 
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Location: Bay area
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Gotta fix mine first before I vote, but the recent purchase has a reman module in it, and that module just had its first birthday.
Reeaally hoping the hose clamp trick brings her on line!

Meanwhile, the wife's daily is on the original, so that will be my first surgical foray.....

oh, and the kid's 96 just started to throw funny misfire codes.....

Yep, 3 gc's, 96, 96, and 97, all 4.0, lots of ntsb inputs. Got work to do for sure!
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post #9 of 45 Old 02-23-2012, 05:55 AM
Timbone1343
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1997 ZJ 
 
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I fixed mine with a Advanced Auto PCM about 7 months ago. Still going.

1997 ZJ 4.0 I6 My DD, Pretty much stock. 242,XXX miles 8-15-11
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post #10 of 45 Old 02-27-2012, 12:26 PM
gt88
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Update: My "new" 97 had a reman pcm installed 1 year ago. At that time, the 'technician' broke 5 of the 6 clips for the harness, and loose harness plugs apparently cause stalling issues... whoda thunk? The hose clamp fix worked like a charm, runs great, wife happy.
My 'old' 96 finally just refused to start, and when it would, idled like a flat cam. Threw a clamp on that one, and it runs great now- so much better, Im willing to actually tune it up and work on it again!!

So, Im adding 2 to the above count, and my kid's 96 will be getting a clamp job for some mystery misfire codes asap!
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post #11 of 45 Old 03-02-2012, 02:44 AM Thread Starter
ZeeJay1997
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post #12 of 45 Old 03-02-2012, 05:08 PM
coralman
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50 million post , 19 votes, go figure
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post #13 of 45 Old 03-02-2012, 10:57 PM
rcorn79135
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Replaced it on two different 4.0 vehicles.

My 1996 4.0 Laredo 4WD (230K miles) at 210K miles. Replaced with a junkyard unit and still working great.

My 1997 4.0 Limited 2WD (205K miles) just this week. Replaced with a Cardone remanufactured unit from Advance Auto. Two days later, it's still going strong. <EDIT> Update...just over 7 months and just under 3,000 miles later and had to get it replaced under warranty. Working again for now.

My 1997 4.0 Limited 4WD (240K miles) - still working great with the original. Go figure.

96 4x4 Laredo, 97 4x4 Limited, 97 4x2 Limited

Last edited by rcorn79135; 10-31-2012 at 08:38 AM. Reason: Updated Status of One of My GCs
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post #14 of 45 Old 03-02-2012, 11:32 PM
ridejeep26
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1997 ZJ 
 
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Location: Pleasant Grove
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I have the 97 4.0 and I was getting the common random stalling and jumping rpms, only code I could drag out of itk was the a random misfire. Replaced the ignition coil, random stalling and bucking still there, so I zip tied my pcm and the jeep now idles smooth and runs strong. Guess I will have to keep zip tying and tightening those suckers till that doesn't work anymore. (zj voodoo gods don't strike me down for saying) zip ties have restored my jeep to its proper self.
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post #15 of 45 Old 03-04-2012, 07:41 AM
JS97ZJ
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bumped again
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Tags
check engine light , connector , pcm rebuild , stalls

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