Question about 1997 Jeep Grand Cherokee

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96 jeep grand cherokee 4.0 (wont start) no fire to ignition module.installed new ignition coil,crank position sensor,plugs,wires,cap & rotor. checked all fuses and fuel pump. not firing at ign coil

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  • shabake0938 Jan 15, 2009

    where is that located

  • shabake0938 Jan 15, 2009

    ok ! ill check that in the morning,thank you!!!!

  • tink325 Jan 16, 2009

    i have a 96 jeep an i dont have no spark from the coil what can this be?

  • shabake0938 Jan 17, 2009

    its not at the front of head,I think its part of the distributer plate on the 4.0

  • shabake0938 Jan 18, 2009

    gotcha,Thanks! gonna check that

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I ve put coil pickup' crank sensor' coil still no power to fuse block on finder' no fire to plugs ' don't here fuel pump, this is on one another one blows fuse to the firing ever time I turn the switch on

Posted on Dec 09, 2013

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For testing, there are some u-tube videos that show each circuit being tested under load. 5v, sensor ground, and sensor signal. need a good meter to check those"hall effect switch" sensors.after trying evrything, THEN buy a pcm and get it flashed with the update. WOT during crank for tests unless u want to disable the fuel pump at the relays for the time of ckp and cam tests

Posted on May 22, 2013

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Change the computer .... PCM get a used one it fixed mine had same problem

Posted on Feb 19, 2009

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Could also be the pickup coil which is located close to the distributer

Posted on Jan 17, 2009

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Have you checked the cam sensor. It coincides with the crank sensor to tell it to fire . And it controls the injectors.

Posted on Jan 15, 2009

  • Jon B
    Jon B Jan 15, 2009

    front of the head I do believe, if not Ill ask a friend.

  • Jon B
    Jon B Jan 17, 2009

    Yes it is a part of the distributor, as I said in the other correspondence, it is a plate under the rotor button, lift it out, and these are attached under neath . They are the parts the wires are attached to.

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I would be thinking that there is a good chance that you need to be checking out replacing the computer, if you aren't getting any communication with the proper scan tool then the computer isn't communicating with anything in the vehicle...... I would have guessed first off that the ignition control module might be bad but that is obviously part of the computer also, I would be looking in that direction.

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Back up a minute...Do you have spark from the coil wire? (juice from coil) If so, change or check rotor and cap (wires do not all go bad at same time so unless they are wet, likely at least good enough to start engine)

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