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1991 Jeep Cherokee stalling

Tiny
BRIEZ
  • MEMBER
  • 1991 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 33,000 MILES
I have a 91 jeep cherokee. It was running great, then outta the blue it started stalling while it was idling. Its been getting worse and worse, now it stalls while driving. It used to start right back up after it stalled but now it doesnt start right back up, it just keeps turning over. We replaced the fuel filter, but it did no good. The fuel pump seems to be coming on fine. My mechanic is stumped. Please help me.
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Wednesday, July 28th, 2010 AT 10:06 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Do below:

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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Wednesday, July 28th, 2010 AT 10:30 PM

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