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Unread 01-31-2013, 12:12 PM   #1
justinspotanske
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1993 ZJ 
 
Join Date: Jun 2009
Location: spokane
Posts: 86
turns but wont start

I have posted this a few times and nothing yet has worked so I thought I would give it another try . Once in a while when I go to start my 93 grand cherokee whith a 4.0 it turns over fine but will not start . I have to try several times just to get a sputter . When it decides to sputter on the next crank I will floor it and it will usually start . Will run like crap for a few seconds but everything evens out . I have in the past year replaced the fuel filter , plugs , wires , cap , rotor , iac , and air filter . I am out of ideas of this issue since after awhile it will start . Any ideas to concider or check ?

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Unread 01-31-2013, 12:39 PM   #2
melk
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1996 ZJ 
 
Join Date: Sep 2009
Location: Charlotte, NC
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Crank sensor, TPS
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Unread 01-31-2013, 01:24 PM   #3
DirtDodd
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1999 WJ 
 
Join Date: Dec 2012
Location: Rome, GA
Posts: 52
Could it be the O2 sensor?
And is the check engine light on? Have you cycled the key on and off three times to check for codes?

And there is a great resource on here that has helped me checking my 93 out called "12 things to check" or something like that if you haven't found that already. Very helpful write-up!
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Unread 01-31-2013, 03:04 PM   #4
justinspotanske
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1993 ZJ 
 
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Location: spokane
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I have a new o2 sensor and no lights are on or have been recorded by cycling the key
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Unread 01-31-2013, 03:37 PM   #5
ratmonkey
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1997 ZJ 
 
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classic symptoms of blown caps in the PCM.
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'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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Unread 01-31-2013, 04:11 PM   #6
nckmbl
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Check the automatic engine shutoff fuse under the hood.
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Unread 02-19-2013, 09:28 AM   #7
wolfjeep73
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1993 ZJ 
 
Join Date: Feb 2013
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i am having the same issue i found it wont start untill the check engine lite comes on then it will start no problem is there a way to fix this issue
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Unread 02-19-2013, 05:17 PM   #8
ratmonkey
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Quote:
Originally Posted by wolfjeep73 View Post
i am having the same issue i found it wont start untill the check engine lite comes on then it will start no problem is there a way to fix this issue
it's blown capacitors in the pcm. long history of those problems in 93-95 jeeps. a google or jeepforum search will give you the info you need.
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'97 zj 5.2, some stuff, some other suff, and some things that even work sometimes.

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Unread 02-19-2013, 07:58 PM   #9
wolfjeep73
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1993 ZJ 
 
Join Date: Feb 2013
Location: palmetto, FL
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ty ratmonkey this is my second 93 and it has the i6 my first had the v8 and all wheel drive i like my new one better but i am seeing the same issues in this one as i had in my last one like leaking fuel when i fill the tank and not shifting properly i need to get this one on the path to a good life so i can make her into a real trail rig for me and my kids to have fun in
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