1995 Grand Cherokee - Missfire problem - JeepForum.com
 
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post #1 of 7 Old 08-02-2011, 10:14 PM Thread Starter
Orvisjeep
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1995 ZJ 
 
Join Date: Jul 2011
Location: Stanwood
Posts: 5
1995 Grand Cherokee - Missfire problem

First off i want to say i have searched and searched the forums and cannot find a answer.

So i have a 1995 grand cherokee that has a major missfire issue. I just bought it with a new motor installed. 5.2L V8. The motor was installed 3 weeks ago, and ran fine at first. It has developed a missfire issue that i cannot figure out.

Things i have done are:

Ignition timing
new plugs
new wires
new ignition coil
new cap
new rotor
reset computer

Nothing has worked, and I am completly out of ideas. Does anyone have any more places to check?

Thanks.

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post #2 of 7 Old 08-02-2011, 11:55 PM
JS97ZJ
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2004 WJ 
 
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Possibly some junk got loose in the fuel lines and is restricting the injectors? Is the miss a steady miss or random? Run some injector cleaner. (?)
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post #3 of 7 Old 08-03-2011, 12:10 AM Thread Starter
Orvisjeep
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1995 ZJ 
 
Join Date: Jul 2011
Location: Stanwood
Posts: 5
It is steady at 1500rpm, and shakes the whole jeep at 2000rpms. Below and above those it runs fine.
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post #4 of 7 Old 01-31-2013, 04:23 AM
Muaymendez
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1993 ZJ 
 
Join Date: Dec 2008
Location: rahway NJ
Posts: 80
IM havng the same issue did you figure this out yet. This weekend will be tune up weekend, Caps rotor, pcm and IAC cleaning but I would hate to burn that cash and it nt solve the problem. And not to mentrion . I HATE DEAD END threads.
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post #5 of 7 Old 01-31-2013, 10:28 AM
Snowfan2
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1998 ZJ 
 
Join Date: Jan 2012
Location: North of Amarillo
Posts: 665
Be sure your plug wires are run correctly. There is a TSB regarding routing.

http://dodgeram.info/tsb/1998/18-48-98/18-48-98-v8.htm
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post #6 of 7 Old 02-19-2013, 01:05 AM
Muaymendez
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1993 ZJ 
 
Join Date: Dec 2008
Location: rahway NJ
Posts: 80
Just wanted to close this thread and let readers know my plugs and cap n rotor were toast. TB also needed a good cleaning.Everything good now
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post #7 of 7 Old 03-14-2014, 08:46 PM
bobinAZ
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1993 ZJ 
 
Join Date: Feb 2014
Location: bullhead city
Posts: 194
Quote:
Originally Posted by Snowfan2 View Post
Be sure your plug wires are run correctly. There is a TSB regarding routing.

http://dodgeram.info/tsb/1998/18-48-98/18-48-98-v8.htm
hate to revive an old thread but, I was looking everywhere for that info.. the search function really does work!!! thanks
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