1993 Jeep Cherokee Engine quits and restarts/now wont start

AIRHEAD1

MEMBER
1993 JEEP CHEROKEE
6 CYL
4WD
AUTOMATIC
15,000 MILES

This jeep would start and once was warmed up seemed not to quit anymore. It quit often without warning before it got over 200 degrees. It ran this way for about 200 miles. It quit finally, warmed up, without starting back up. While cranking it over it fires lightly but does not take off or backfire, just lightly fires. It has fuel pressure at the shrader valve, enough to spray heavy when I press it, then repreasurizes when I turn the key on again. I obviously haven't checked the amount with a guage but I would think it would do more than a light firing with the amount it has.

Tuesday, July 27th, 2010 AT 3:01 PM

1 Reply

RASMATAZ

MECHANIC
75,992 POSTS

1993 Jeep Cherokee Engine quits and restarts/now wont start

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine atleast 3/16 away from ground-have helper crank engine over-do you have a snapping blue spark? If so-you have a fuel related problem, check the fuel pressure to rule out the fuel filter/fuel pump/pressure regulator and listen to the injector/s are they pulsing or hook up a noid light. No snapping blue spark continue to troubleshoot the ignition system-power input to the coil/coil packs, coil's resistances, cap and rotor, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it and keep testing

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Tuesday, July 27th, 2010 AT 3:11 PM