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Old 07-08-2010, 06:44 PM   #1
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Im gonna burn it if i cant fix it!

Hello people,
Im new to the forum for starters, HI and i need help!

SO, heres the problem. My mom bought her dream vehicle, a 1997 jeep wrangler with a 2.5L. From the day she bought it, it has had problems. Ive replaced so much on it that ive almost lost track of all the new parts on it.

now here is what its doing now. as you get to high rpms and sometimes low too OR hit bumps, it starts to backfire and cut out REAL BAD. Basically stalls. when it does this ALL the gauges will drop like you just shut it off and then pick back up in a split second. It will run fine for awhile, then it will have another episode till you have to pull over with it. im fed up with it.

heres what I have replaced on it: ECU, ignition coil, ignition pickup, cap, rotor, wires, plugs, crank position sensor, both O2 sensors, all the sensors on the throttle body, water temp sensor, radiator, shocks, rear axle, all bushings, exhaust, wheels, tires, i hate it, i hate it!

So please anyone help me figure this one out cause i cant stand working on it anymore, save it from the fire

thanks!

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Old 07-08-2010, 07:00 PM   #2
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Well, it sounds like a loose or poor connection to me. If it were mine I would first look at all the fuses(behind the glovebox and under the hood. Not for blown fuses but pull each one and look for oxidation on the terminals. I would clean each one and use a piece of fine grit sandpaper to clean the terminals where the fuses plug in. I would do the same thing for the relays as well. Then check all your grounds and ground straps for corrosion, wear, and damage. I'm sorry your having all this trouble. Where do you live? Maybe someone on the forum lives near by and can take a peak at it. More eyes and ideas. Sometimes it just takes a fresh mind to jump in there and say "Hey, what about this or did you try that"

Hope you get it figured out.

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Old 07-08-2010, 07:01 PM   #3
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First of all, welcome to the board.

From your description, it sounds to me like you're losing power or ground somewhere. If it were mine, I'd get under the hood and start wiggling connections while the engine is running. If it stumbles, you might be onto something. If you don't find anything there, do the same under the dash. I'd pay particularly close attention to the area around the junction box/fuse/relay panel in front of the battery, and the connections around the steering column/ignition switch. Check every ground connection you see also.
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Old 07-08-2010, 07:05 PM   #4
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Quote:
Originally Posted by Riptide63 View Post
First of all, welcome to the board.

From your description, it sounds to me like you're losing power or ground somewhere. If it were mine, I'd get under the hood and start wiggling connections while the engine is running. If it stumbles, you might be onto something. If you don't find anything there, do the same under the dash. I'd pay particularly close attention to the area around the junction box/fuse/relay panel in front of the battery, and the connections around the steering column/ignition switch. Check every ground connection you see also.
x2

I've solved a similar problem on my dads car that way. I forgot about that. Thanks Riptide.

Just keep hands and clothing AWAY from moving parts.
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