ok so heres my problem, i have a 98 XJ and it doesnt happen at any certain time but it shuts off while driving or just sitting... at first it only did it every once in a while but today while i was on the way to work it did it 4 times in a row but it always starts again afterwards sometimes it takes a couple cranks though... so i was thinking CPS or the Ballast? any input would be great. thanks guys.

clogged/old fuel pump/filter possibility

do a search on how to test the cps, I would be leaning towards that as well.

hmmm... i'll look into that, it popped a fuel line last night so maybe it got backed up?

could be the negative pressure vaccum pullled it off. It will only start again soo many times before it fails and can not draw fuel through

i see well that makes sense, i found a video on youtube on how to test the CPS and its pretty simple so i'll do that tomorrow and i'll look at the fuel stuff.

1. Resolve that fuel line issue! A fuel line popping off is a serious fire hazard.

2. Test that crank sensor. It can definitely give you symptoms such as you describe. If you buy one, buy it directly from Jeep for the best reliability AND longevity. Well worth the extra $20.

yeah i fixed the fuel line issue, it was one of the clamps on the rubber lines that came lose. all tightened up now. i'll test the CPS later on this afternoon and let you guys know.

alright so i drove the jeep over to autozone and ran the codes and it pulled the CPS code so i replaced it and drove to work without any problems.. but im gonna give it a few days to say its totally fixed but so far so good. thanks for all the help guys!