GosaGT1988

Well when money isn't an issue I'm going to go ahead and due a complete tune up on her. Ignition coil, ignition control module, spark plugs, ignition wires, well you know the list. She runs pretty damn good but I can't wait until I can afford to do the exhaust system. I'm going to do an oil change tomorrow.

Nevermind, just added some more transmission fluid and all good to go. Thanks a bunch for all the info. I don't know what I would've done without this site.

Florida might as well be a third world country. The stores around here are crap. The only place worth going to is either Wilson's 4X4 or Jeep Toy Box but they're a little more expensive than what I can afford.

Got the new CPS in and swapped in the old ICM, started right up. But now that I lowered my transmission (about 4 inches) to put the new one in and put everything back in it's place the transmission doesn't want to come out of first gear.

Got the old CPS off, that thing looks like hell. The wiring where the unit connects with the flywheel teeth is all cut up. I'm taking a little break before I put the new one on. I'm going to try the new CPS with the old ICM and see what happens. Like I said before, if the old ICM works I'm going to get my money back.

I'm going to have to do it tomorrow since it's already dark outside. I'm going to swap in the new CPS and try it with the old ignition control module. If the old one works I'm going to go get my $112 back from AutoZone for the thing. Thanks for the info on how to do it the easier way because that's a real tight spot for me to do it the way I was trying (reaching as best as I could trying each socket blindly.)

What's the easiest/best way to remove that DAMN CPS!!! i.e. what size socket, etc.

I used my ohmmeter and tested for continuity through the CPS. It should be somewhere close to 0. I got 0.25 which is close enough. But just for grins and giggles I'll give it a shot.

Checked the CPS that's fine. Ended up being the ignition module. Replaced it, lasted about twenty minutes of driving and crapped out, replaced that one, nothing. HOW MANY BAD MODULES CAN ONE PARTS STORE HAVE?!!!

I have never been a fan of ECUs. The one in my 89 YJ has been bypassed completely by the previous owner and I have no idea how they did it. The difference is that one has a carburator.

There's nothing wrong with it, I was just wondering. I am however trying to figure out a way to bypass that computer in there.

What all is necessary/needed to do it on a 4.0L in a 1990 Pioneer with the Renix system?

I went driving around with my Comanche earlier today and had no problems whatsoever. However, a few hours later I went to start up my Comanche and it just cranked and wouldn't start. I got out and tested the ignition wire coming from the ignition coil and there's no spark whatsoever. Could it be a bad ECM or ignition coil? It has a brand new cap and rotor, all new ignition wires, spark plugs, etc. I didn't go with anything except factory parts. I did not replace the ignition coil when I did all of this.

Yeah I do. I want to do a complete swap over.

I found a 1991 Cherokee in the junkyard and was thinking about taking out my renix 4.0 and putting in the Chrysler 4.0. What all do I need?