Why is my jeep shutting off without warning?

I would check when the truck dies using a timing light if you're getting spark through all the plug wires. If not, I would change the ignition module under the distributor cap. This might fix the problem.

I had the same problem with my 2001 jeep I found out it was the crank sensor. Jim

http://www.jeepforum.com/forum/f13/12-things-you-can-do- when-your-zj-stalls-1407423/

Hi i know its several year later but i had a similar thing my jeep would be sluggish to take off and judder at slow speeds then when sit at traffic lights it might just stall .. then start again ... Finally it stalled i managed to get it going then stalled while idling for 2 mins then wouldnt start and was like not getting any fuel to the engine ... after pumping accelerator it fired then stalled again.. I called the AA breakdown service the mechanic noticed their was a leak from an exhaust pipe that was recycling the exhaust gases (sorry im not technical) a valve was being pushed fully open so cutting off the fuel, all he did was remove the vacuum pipe to this valve and the car fired up and drove like beauty , better than it has every driven ... but i still have to replace the leak in the pipe..