rpmaddict30

Well I didn't end up having to tear the dash out. The ECM is conveniently located on the fender by the air box. That was nice. Bad thing being that I got a new ECM and it didn't fix the problem. I've had it. It's at a garage now. I even traced every wire under the hood. Now let's see if they can figure it out.:banghead::banghead:=:broke:

Guess it's time to start tearing the dash apart. Wow that sounds like fun.

Well I spent the day backtracking through all the wiring I had moved while working on it and didn't find anything. That's not a good thing. So I guess tomorrow I'll start from the front and work my way back. I sure hope it isn't in the lights, doors, or the darn stereo! I was having a small battery drain before it went down, but I chocked it up to "stuff happens". Well I guess stuff happened one too many times. Thank you guys for the advice and I'll post updates as the process continues. Hopefully once I have found the problem I can help someone else with the same deal. --- Update to the previous post... I drove the Jeep today. Not a good experience, but it ran. lol I took it to AutoZone to have the codes pulled. I got 2 codes. 1: Short in or malfunctioning TPS. 2: ECM has not received any CCD messages from the Aisin trans module within the ECM. (Probable cause, CCD bus line open or Failed ECM. Sounds like another $400.00 going out the window with this thing. Yep a new ECM is $398.99(without core charge). I'm thrilled with this. Also I'm running into a new problem. As soon as the rpm's go below 2500 the oil pressure drops to 0. It just seems like this thing is going from one thing to another. I appreciate all the help guys. :banghead::banghead::banghead:

I haven't had a chance to look at it today, but I was wondering...I've heard there is a wand type instrument that you run down the side of the vehicle to narrow down the general location of any shorts. Is there such an instrument? I'm in WAY over my head with this whole wireing thing.

I had it scanned by a garage and found no problems with the ecm or pcm. That was before I replaced the intake manifold. I didn't change any of the wiring and put everything back the way it was before. I didn't change anything electrical so that is why I have no idea what it could be. The hot wire at the front of the of the fuse box was smoking big time when I tried to jump the battery which (surprise) was dead. This has all happened since I changed the head and intake manifolds. There is a whole lot of wiring under the hood of that thing. lol I don't even have a clue where to start. Although when the no bus came up the electric fan was on with the engine not running and obviously not hot. Could the electric fan have anything to do with it?

I have a 2000 Jeep Cherokee Sport. I am having the same exact problem right down to te no bus on the odometer! I am in desperate need of help as well. This is my only mode of transport besides my motorcycle an I have a family to transport. See my situation? Well if ANYONE can offer a possible solution it would be greatly appreciated!