Question about 2002 Jeep Grand Cherokee

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Jeep nut running correctly

2002 jeep grand cherokee starts fine on most days, some days it wont start at all,but when it does run and i drive down the road,might be 1 mile or 20 mile it will shut off and and refire, if i reset set the codes,which are cylinder circuit malfunction and let it sit for a min ,i might also have to wiggle wire harness going to coil pack ,it will refire and run for a long or short amount of time.

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  • cativera_usm May 15, 2009

    i have checked all the pins and cleaned them and i zip tied it together to be sure it was secure,i have not tried wiggling it to see if it will shut down,i will try that asap.

  • cativera_usm May 15, 2009

    I tried grabbing the harness with the vehicle running,did not shut it down?

  • cativera_usm May 15, 2009

    last march had similar problem , replaced crankshaft sensor, and coil rail, fixed it until now?

  • cativera_usm May 15, 2009

    cps? what is this?

  • Richard Scordino May 11, 2010

    crankshaft position sensor

  • Richard Scordino May 11, 2010

    Actually, while I was writing my reply, I was thinking that either cps or coil pack was failing. Test carefully before buying anything though.

  • Richard Scordino May 11, 2010

    You first need to establish that all connections are clean and secure. Unplug the harness and look at the connector pins to make sure they are clean. There are specific tests you can do on components that will give you an idea as to if they are good or not (get a manual for specifications)
    Also remember...sometimes moving harnesses tell you that there is a poor connection, other times, you are just doing "busy work" while giving a partially failed component time to cool down and resume function. Can you wiggle the same harness and get it to stall? That would indicate that there is a connector problem.

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SOURCE: 1999 4.0L Jeep Grand Cherokee shuts down after 20-30 minutes.

I'd suggest the ignition control module, however I'd have a certified mechanic check it out just in case...

Posted on Feb 01, 2009

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SOURCE: I HAVE 95 JEEP GRAND

Had similar problem with 96 Jeep 4.0L engine. Tracked it down to the connector for the distributor pickup. Spliced in another connector and hasn't stalled since. Also, have you had any codes? Easy way to check on Chrysler products: turn key on, off, on, off, on (not starting) and watch the 'engine light' on the dash. It will flash off/on. Count the flashes with short pauses between and longer pauses between code. When you get a 5 count and 5 count, that is the end. This may also help

Posted on Aug 22, 2009

co7196
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SOURCE: 1996 Jeep Grand Cherokee Laredo was not firing but

Chk the battery ground cable, Remove and clean. Then chk your charging system at the battery. Should charge between 13.6 and 14.2v If it is charging above 14.2 your alt is barely charging, The further below 13.6 the more amps the alt is putting out. Make sure you battery has adequate water in it. A battery will rejuvinate itself after it has gone dead after sitting awhile,but only enough to last a few minutes. Turning on you headlights would kill it right then.

Posted on Nov 20, 2009

wireguy212
  • 1627 Answers

SOURCE: 96 jeep cherokee, inline 6 4.0... runs fine...

Try the pick-up coil that is under the distributer cap.Remove the cap and rotor button then remove the plate that is under the rotor button.Next you need to take off the relucter wheel that is in the way so you can take out the bolts and remove the pick-up coil.

Posted on Nov 25, 2009

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SOURCE: 97 grand cherokee ltd 4x4.

Your crank sensor might be the culprit that's causing your problem. Have it checked.

Posted on Oct 22, 2010

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