1994 Jeep Cherokee mama mia! Por favor HELP ME!

Tiny
JUL854
  • MEMBER
  • 1994 JEEP CHEROKEE
Engine Mechanical problem
1994 Jeep Cherokee 6 cyl Two Wheel Drive Automatic

My jeep wont turn over it cranks good, iv'e changed the fuel pump, crankshaft positioning sensor, checked fuel pressure, battery's fine.
Wednesday, December 9th, 2009 AT 11:25 PM

5 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
My jeep wont turn over it cranks good-Do below and get back with some results

Get a helper disconnect a sparkplug wire or 2 and ground it to the engine -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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Wednesday, December 9th, 2009 AT 11:32 PM
Tiny
JUL854
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It has a spark and the fuel pressure seems to be fine. Could there be another solution? Thanks for the quick reply
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Thursday, December 10th, 2009 AT 10:01 PM
Tiny
RASMATAZ
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Are the fuel injectors pulsing providing fuel to the cylinders
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Friday, December 11th, 2009 AT 2:20 AM
Tiny
JUL854
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Yes they are. My car turns on but then it automatically turns off after a second
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Friday, December 11th, 2009 AT 10:00 PM
Tiny
RASMATAZ
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Power the coil positive terminal from the battery positive post and tell me what happened-Doing this bypasses the ignition switch. If it contnues check the fuel pressure to rule out the fuel filter and fuel pump.
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Friday, December 11th, 2009 AT 10:49 PM

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