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Old 06-08-2013, 10:20 AM   #1
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Gremlins in my 2.5!!!

So I've had a sputter around 2000 - 2500. Replaced cap, rotor, plugs, wires, o2, tps, fuel filter, cleaned tb, checked alternator (takes load and runs good voltage) worried about volt gauge seems to show low volts. Looked into vacuums lines And about to replace them, new injectors, air filter, exhast including cat. Did not do coil yet and want to go over grounds today.
Ok I know that's a lot to say before I tell you what it's doing. It started bucking going down highway. Like a jolting feeling, noticed it doing it more and more in lower gears. The other morning cel came on and I got the usual 12, 33, 55 but also 21 o2 sensor or circuit. Replaced o2, ran great for about a week, then back to bucking and sputter. (Bang head )
Not sure where else to go from here. I plan on getting my hands on a fuel pressure gauge but till then I need to get some ideas.
Any help is appreciated and its a 1995 2.5 five speed with 191,000 on original motor.

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Old 06-08-2013, 11:23 AM   #2
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From what you've replaced already I would do the grounds like you said and almost sounds like its missing under a load. Did you check the gap on the plugs? How's your air filter? I wouldn't think it's a vacuum leak because it would idle rough, but possibly.

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Old 06-08-2013, 12:20 PM   #3
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I can recheck the gap but I know I did before they went in and just talked to my brother who had it before me, he has had the problem since it was two years old though only when it was damp out. I also noticed it was worse when wet.
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Old 06-08-2013, 12:30 PM   #4
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Quote:
Originally Posted by Jeeptrd View Post
I can recheck the gap but I know I did before they went in and just talked to my brother who had it before me, he has had the problem since it was two years old though only when it was damp out. I also noticed it was worse when wet.
That indicate a wiring problem somewhere.......
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2013 WRANGLER SPORT 2 DR., V-6 ,AUTO,HARD TOP
(Sold)1994 Jeep Wrangler 2.5L, Bestop top
/w steel half door and slider windows
5 speed, 2.5" lift, 31" tires,rack lights
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Old 06-08-2013, 05:05 PM   #5
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Yeah just picked up more loom today going to remove the old and see if I can find anything at all. Could it be that I didn't disconnect the battery for the o2 sensor yet?
Thanks everyone!
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