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bigtom89 05-11-2013 08:07 PM

4.2 coil issue
I have a 88 YJ with a 4.2.

Here's what went wrong and how it happened. Driving down a newly paved section of a main road I hit a half paved manhole cover. I hit it so hard that the jeep jumped off to the side of the road. The radio died along with the Jeep itself. Once I pulled over and came to a stop there was smoke pouring out of the front of the Jeep. I hit so hard it messed up wiring, melted fuse able links and other wires.

I now have the Jeep so it will turn over but it won't fire, no spark. Is there a way to direct run the coil to a power source? I've done a few quick searches and really haven't found anything. Thanks for any help or advise.

NonRubicon 05-11-2013 10:57 PM

The coil get's the spark signal from the ignition control module. I'd start investigating there.

bigtom89 05-12-2013 04:38 PM

The ICM tested good, I should have also mentioned that I preformed the Nutter bypass so I've gotten rid of a lot of the computer control for the ECM. No problems until I hit the exposed man hole. Fuses look good under dash but is there anything else I should be looking for? My guess is no power from under dash to ICM.

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