1999XJ-Sport

Although this is my first post, I have used these forums before for troubleshooting and fixing some problems with my Jeep in the past. So I just wanted to know that although people may not register or post here you are helping a lot of readers out. My problem before (about 6 months ago) was the CPS. The Jeep ran great in an open loop, then once closed it would randomly misfire at any give moment. Going 60mph, at idle, .... whenever it felt like it. Once that was finally replaced, the Jeep started running great again and all was great with the world.

2 days ago I was on the way to the store. Not even 2 miles from the house (im thinking it was still an open loop) the Jeep started bucking on me while accelerating and the check engine light would come on and flash off. The Jeep sputtered not even 1/4 more of a mile, then shut off. I couldnt get it started for about 30 min. When I eventually did, I drove it home, with ZERO issues. Engine oil was low and it was due for a change, so I did that and test drove it back to the store. Same exact problem. I only got around the corner from the house when it started bucking pretty violently. The engine also acted as if it wanted to shut off. While it was also doing this the Voltage Gauge would drop and the Speedometer would also dip way down and then shoot back up again when the check engine light would go out and the engine would continue to normal operation.

I was able to make it to the local autoparts store where we hooked up the computer to retrieve the code, but the computer is not storing a code. This leads me to believe its not a problem with a sensor or relay? A friend of mine suggested that its a ground somewhere (which there are many) which is probably intermittently opening which is telling the computer to shut the jeep off.

Very much close to Mike Romain's problem I found at http://www.jeepforum.com/forum/f11/2...92/index2.html

So I have been searching all morning to find all of the locations of all of the grounds that I can check to fix my issue. Im thankful for this wiring diagram http://www.scribd.com/doc/10078577/J...ring-diagrams- that I found on this Thread: https://www.cherokeeforum.com/f2/gro...cations-44920/ But I was unable to view the information that was included in the thread which was provided by ol"blue
https://www.cherokeeforum.com/f2/wir...22194/index25/

Well this is what I am dealing with today. I drove it to work, and hopefully I can make it home today. Any assistance with this problem is greatly appreciated. If there is any other information that anyone else needs to know to help figure out whats going on, please let me know. Thanks!