I've got a 2000 cherokee sport 4L I6 and I had previous trouble with a cylinder misfiring and engine stalling problems. However, I replace spark plugs, fuel injector upgrades and cleaned throttle body and iac and new battery. It starts great but after about a minute or so I will just die. The lights on the dash will start to flicker a bit and then it will shutoff. Has anyone had this experience before?

 

You changed the battery. Probably weak connections. I have issues with my battery cables often. Need to replace mine when I can.