I bought a 2004 TJ several months ago, now has 101,000 miles on it. From the time I purchased until now had quite a few problems with it. It seems the previous owners liked to do a lot of their upgrades and modifications themselves and screwed a lot of things up. Basically I was having an issue where the Jeep would throw a check engine light, start struggling to hold an idle and as soon as I would drop it out of gear or come to a stop the electrical would shut off completely. It would immediately start back up, idle would be all screwed up but eventually the problem would go away. Took it to my mechanic and first had a bad ignition that he thought was shorting it out so replaced that. It ran good for a while and then problem occurred again. Biggest issue I kept having is the problem would occur, then it would go away and it would not replicate for the mechanic and all the diagnostics were checking out fine. So as the problem kept occurring, mechanic still believed it was electrical problem, so began chasing and repairing electrical grounds. This process occurred over quite a long period of time because due to my job I come and go for several months at a time. After I just moved to new city for work, problem popped up again and I am no longer near my mechanic. I brought it to another mechanic, who immediately said he thought the Edge Electronic Module that was installed was bad. He uninstalled the electronic module that was a part of the old Edge Trail Jammer kit and re-flashed the ECM to stock. Haven't had the problem since but it has only been a week or so. My dad is a mechanic back home but I am not as savy about cars as he is. My worry is the problem may not be fixed and still come back again. So just wanted to put this out there and get some feedback. I also do not think the previous owners did a lot of the regular maintenance that needs to be done, so am wondering if this problem has finally been fixed where I need to look next to keep it running well. Want to get the engine and jeep running well so I can start putting money in to some of the exterior and fun stuff.
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