Question about Jeep Cherokee

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1989 cherokee will turn over but will not fire. i pulled the coil wire off the distributor and checked for spark there and still get nothing. i changed the icm and checked the coil but still no fire. i don't know where to go next.

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  • bkhtned Jul 28, 2008

    91 jeep 4.0 ho 184k mi going down the road ignition just quit replaced the coil replaced the crank sensor still nothing HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

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Crank angle sensor needs to put out pulses as the engine spins... accordianman

Posted on Jul 28, 2008

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1 Answer

1989 jeep cherokee wont start


Well you have several other components that would need to be tested.
Are you not getting spark from the coil, or from the coil but not to the plugs ?
You have a sensor in the distributor that provides a ground signal to the ignition module, that fires the coil. Then the spark goes from the coil to the distributor cap, then to the plugs.

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I have an 89 k3500 454 tbi not getting fire to plugs. have fire to and from coil, aldo has new coil ignition module ingnition switch distributor cap rotor button distibutor and starter. but no fire to...


Check the resistance of the pick-up coil in the distributor. Reading should be between 800 to 1200 ohms. Disconnect the two wire connection at the distributor control module to measure the resistance.
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So does he have spark at the distributor but not at the plugs? I'm not sure what you mean by fire coming in but not coming out. I build alot of these cars.

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