JustinTurney
NAXJA Forum User
- Location
- Reno,NV
my 1990 4.0 just will not run. it'll crank and it will attempt to start, but once the key is in the run position, immediately the engine just dies. everytime, i try to start it, the same issue crank tries to catch, let go of key, nothing. i've replaced the ignition switch due to a burnt connection and the lock cylinder followed suit, checked power to the ballast, tps, cps, did relay swap with another jeep, checked the power to the ignition switch, and still having the same issue, could this be related to a ecm or the neutral safety switch? if not any suggestions, also does anyone have a good wiring schematic for the ignition switch and engine control system for the 1990 year? haynes is brainless!!!!!!