1999 Jeep Cherokee

Tiny
HENRY CUPID
  • MEMBER
  • 1999 JEEP CHEROKEE
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 153,000 MILES
Engine tumbles but won, t start replace fuel pump, problem continues, what should I do
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Saturday, March 20th, 2010 AT 6:48 PM

3 Replies

Tiny
RASMATAZ
  • MEMBER
Hi Henry Cupid, Welcome to 2carpros and TY for the donation.

Did you have a check engine light come on or has flashed prior to this problem and when was your last tune-up? Do below and get back with some results-we start here.

Cranks but no start condition:

Fuel and Spark:
Get a helper disconnect a sparkplug wire or 2 and ground it to the engine at least 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, distributor pick-up coil, ignition control module, cam and crank sensors and computer Note: If it doesn't apply disregard it.
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Saturday, March 20th, 2010 AT 7:47 PM
Tiny
HENRY CUPID
  • MEMBER
No there was no check engine light on at the time, the only thing I remember was while driving home from work as I aproached a traffic light the car shot down, but started back up, I drove without any more problem. The next day she would crank but no start. Fuel pump checked out power to spark plugs okay, there is an indication to start but wont, what else should I be checking.
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Friday, April 2nd, 2010 AT 12:45 PM
Tiny
RASMATAZ
  • MEMBER
Verify the fuel pressure if its within specs and injectors are pulsing
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Friday, April 2nd, 2010 AT 12:52 PM

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