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Idles Rough, I got some codes. Please HELP!!!

Old 10-05-2009, 08:08 PM
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Default Idles Rough, I got some codes. Please HELP!!!

Well the jeep started running like crap. Its a 96 4.0 auto with 200000 miles. I got a check engine like and got codes p0202, 300, 302. Misfire cylinder two, open circuit on injector for cylinder 2? What do you guys think. please help me.
Old 10-05-2009, 08:15 PM
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Ohm all injectors to make sure their real close within .2 of each other winston427 just had the same codes and replaced #2 coil pack and all plugs seem to have fixed it.
Old 10-05-2009, 08:39 PM
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not sure, does the 96 have coil packs or a distributor... if it has coils can you swap two of them and see if the misfire moves or if it's a distributor can you swap 2 spark plug wires and see if the misfire moves... If nothing changes I would even go as far as swapping 2 injectors to see if it moves... Also... don't overlook the spark plugs... good luck with it...
Old 10-05-2009, 11:46 PM
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I have a distributor. No coil packs.

Is it due a tune up then? Its become intermittent. Sometimes it will just smooth right out, then get rough again. And when I get on the main drag and get up to like 40 the check engine light starts blinking. Whats the blinking mean???
Old 10-06-2009, 12:14 AM
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oh and thanks you guys for replying so quick. It needs a tuneup anyway but I'm afraid one of the injectors is ***** up. Whats a good way to replace the injectors. Like ones off a 5.0 or something? Maybe I'm gettin ahead of myself but everyone here is always so helpful.

Thanks again you guys.
Old 10-06-2009, 05:28 AM
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when the check engine light starts blinking it means you are going to cause damage to the cat convertor.
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