It's the crank sensor!
Join Date: Nov 2007
Location: Central Minnesota
Don't think I have run across one myself. But if there is one, somebody will likely chime in.
Try ebay for a printed version. Not that expensive.....
99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!