It's the crank sensor!
Join Date: Nov 2007
Location: Central Minnesota
It will take longer than 10 minutes.
Search this forum for "crankshaft position sensor" and you will easily find a thread that has pics and the procedure.
99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!