[Douglasjeepowner]

My 99 Cherokee is doing something similar, starts up great runs normal, drive about 7 miles it starts the knock, and engine spudders, losses acceleration, and a couple of times it's died, when I try to start up again it miss fires, acts like its not getting gas, and runs rough. Let it sit few hours it runs great for about 7-10 miles starts again. Spark plugs? Throttle positioning sensor? I'm lost.