Trouble startng 98 jeep

Get rid this vehicle to some pond and buy a new one.

The first thing to check is the fuelpump preasure, make sure the compressor is pumping enough preasure, these are famous for fuel pumps going bad.try sparying starting fluid into throtle and see if it starts, this will tell you its a fuel problem.

97 cherokee crank sensor replaced, still shuts off, code 351

Have you checked for fault codes, no tools required. Follow the link How to Read Dodge Truck Check Engine Codes Without Scan Tool

Doesn't that jeep have an on board anti theft system that shuts of power to the startee and the fuel injectors. Im pretty sure it does thats where to start sometimes just turn the key to the on position for 30 sec. To 60 sec then crank the engine if that doesnt work turn off at least 10 sec try again tirn to on position without cranking motor for at least 30 sec then try cranking

Likely your fuel pump has failed or the filter is extremely dirty...Do a pressure test before replacing...pump is about $200. other problem could be from broken or disconnected vacuum line , bad control or bad vacuum servo motor for a blend door for the heater/.A/C.

i have a 98 and it has a distributor but it could be a fuel issue more than a spark if you have a fuel pressure gauge and check it.should be above 30 psi to me it sounds like a fuel pump thats bad

might check the crank sensor. it is located on the transmission bellhousing on top just off to the drivers side. if the pcm loses this signal the vehicle will die immediately and not restart until it sees the signal again

when a cherokee have trouble starting i always go to the crank sensor first it on top of trasmission you crank the motor on the fly wheel you have accumulation of rust and before the crank sensor notice the engine turning it take a long time me i remove the crank sen sor visualy check if it crank i change it and i used some abrasiv sand paper or something like that i ask somebody to crank the engine i put the sand paper in the hole of crank sensor when the engine turn sand paper clean the flyweel be carefull for our finger after install the sensor and try it out good luck pierre