HELP. No start - no spark

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10-30-2012, 06:05 PM

PistolaGrande

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Join Date: May 2012

Location: Texas

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Year: 98

Model: Cherokee

Engine: 6 cyl 4.0l

HELP. No start - no spark

98 4.0L 6cyl

Sitting at a stoplight, it just turned off. It cranks, but no start. I have fuel pressure but no spark at the coil. I have replaced..

Alternator
Battery
Coil
Pickup Coil
Distributor cap
Rotor cap
Plugs
Wires
Checked all fuses and relays

Ideas????

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10-30-2012, 06:38 PM

RTorrez1

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Location: Riviera, Texas

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Year: 1998 Sport

Model: Cherokee

Engine: 4.0

Have you checked the CPS? Sometimes if you unplug it and plug it back in it will start but if it does it needs to be replaced. If you do a search there is a couple of post on here on how to check out the CPS.

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10-30-2012, 10:22 PM

PistolaGrande

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Join Date: May 2012

Location: Texas

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Year: 98

Model: Cherokee

Engine: 6 cyl 4.0l

Thanks... That will be my next replacement

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10-31-2012, 07:19 AM

tjwalker

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Year: 1999

Model: Cherokee

Engine: 4.0

I agree with RTorrez1. Crankshaft position sensor is absolutely the primary suspect.

Do yourself a favor and buy a Mopar unit directly from Jeep. Aftermarket crank sensors are "hit and miss" with a lot of miss.