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Old 03-07-2012, 01:40 AM   #1
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Jeep yj stumbling

I just picked my first jeep up. It's a 92 wrangler with the 2.5l. Had a few cel codes. I replaced the tps map and o2. Still gets crappy fuel mileage. My main concern is acceleration it pulls great till 3000rpm. If I lightly press the gas it will go but if I'm trying to go it stumbles and won't go. It doesn't backfire and idles fine. Any ideas?

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Old 03-07-2012, 01:45 AM   #2
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Also has new plugs wires and cap.

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Old 03-07-2012, 01:50 AM   #3
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So when you give it gas lightly its okay but when you floor it it falls on its face? fuel injector or carb?
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Old 03-07-2012, 01:57 AM   #4
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Yes exactly. It's fuel injected.
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Old 03-07-2012, 02:08 AM   #5
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Check out this link, should help find what the issue is

http://www.2carpros.com/articles/engine-hesitates
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Old 03-07-2012, 02:10 AM   #6
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Ok thanks
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Old 03-07-2012, 02:13 AM   #7
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Gonna try the fuel filter this weekend. By the looks of it looks like the factory filter.
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Old 03-07-2012, 02:30 AM   #8
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Just checked the codes again and it's throwing a 11 which is ignition. Any ideas on that?
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Old 03-07-2012, 03:13 AM   #9
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try this thread, another YJ with code 11

http://www.wranglerforum.com/f8/pull...-a-142459.html
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Old 07-26-2012, 05:02 PM   #10
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Seem to have similar fuel problems

How did you recover with the fuel issues? And the ignition? I see that my 2.5L starts fine runs smooth after getting into second gear, hitting some bumps in the road or over RXR crossings cuts offs and mostly runs again. Thought it to be a ground or a short prob. Haven't found loose or high resistance in wiring yet.
And in first gear (not all the time) it is real jerky at start off from a dead or rolling stop. !!! Really irritating!!!!

Any input would be nice

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