Background - Before I swapped engines, when it had the stock 4.0, I had issues with the ignition cutting out. I'd be driving along and out of nowhere it was like it would go into a limp mode or something for a few seconds, then it would pick back up. Took it to a buddy who is a mechanic and he said the wiring harness had gotten hot, so we separated all the wires, ran better for awhile but would still randomly do this.
Replaced the engine with a Spartan 4.7 long block. Every bolt on part was replaced. New injectors, MSD ignition rail, water pump, alternator, etc. I'm still having the same issue with it cutting out/going into limp/whatever its doing. Had an engine code pop up, "Misfire Cylinder #3".
I feel like everything mechanically is good, I'm leaning towards electrical.
Has anyone else had an issue like this with a bad wiring harness? Where do I get a replacement, Painless doesn't make one and they're discontinued from Jeep. Do I need my computer reprogrammed, and where do I have that done?
Sorry for being so long, thanks for any help/advice
Replaced the engine with a Spartan 4.7 long block. Every bolt on part was replaced. New injectors, MSD ignition rail, water pump, alternator, etc. I'm still having the same issue with it cutting out/going into limp/whatever its doing. Had an engine code pop up, "Misfire Cylinder #3".
I feel like everything mechanically is good, I'm leaning towards electrical.
Has anyone else had an issue like this with a bad wiring harness? Where do I get a replacement, Painless doesn't make one and they're discontinued from Jeep. Do I need my computer reprogrammed, and where do I have that done?
Sorry for being so long, thanks for any help/advice