Question about 1997 Jeep Cherokee Country

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I have a 97 tj wrangler w/4.0

My 1997 jeep wrangler has an issue you can take off down the road and it will start shugging, spitting and sputtering , and popping through the exhaust. It don't do it all the time but quit a bit. I just put new plugs, wires, cap, and rotor on it and it didn't make a bit of differance, plus the check engine light doesn't come on

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  • randy fickle Sep 15, 2008

    i will check cause i lost my fuel milage and that is not a good thing with prices like this

  • colhen Sep 29, 2008

    I have the exact same thing thing going on in my 98 classic for 5 years now! Not one mechanic has been able to figure it out. i have replaced o2's fuel pump,tps, and nothing all wires,plugs and cap well maintained and replaced before need be. never checked the timing change, though i have suspected worn rotor, but never persued it because the problem is intermitent. if you figure it out pleeeeease post it so we can all know!

  • randy fickle Oct 03, 2008

    it was the primary o2 senser that was causing all of my problems now its running better than it has in a long time

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  • Jeep Master
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Why it is random I can't guess, but what you describe sounds like ignition timing change perhaps from a worn distributor. If you own or can borrow a timing light to see if the timing is jumping around, pulling the distributor can be avoided if the timing checks out as steady.   

If you pull it, mark EVERYTHING first(!) and inspect the drive end of it and its seat to see if there is any excessive wear to be seen.

Posted on Sep 15, 2008

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