I have a 1990 jeep cherokee that i can crank and start but then it will just cut out after a minute or two there is no sputter or hesitation i tried cleaning and plugging all relays in checked for vacum leaks and there were none, there is a brand new crank position sensor, and egr valve ect.. and i even replace the ecu and fuel pump does anyone have ANY suggestions im completely stumped

 

Did you clean your ground wires, on the battery, body ect.?

 

Make sure the cables are tight on the battery. If you can move them at all, tighten our replace em.