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    mavericksr71's Avatar
    mavericksr71 Posts: 1, Reputation: 1
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    #1

    Jun 26, 2010, 11:46 AM
    1993 Jeep Grand Cherokee with 6.0 will not start after running a bit
    Replaced the coil in Jan. Jeep will start fine most of the time in the morning, after driving about 20 miles or so and then shut it off it will not start until after some time has passed (sometimes 2 hours to next morning). Also seems to not start when outside temp is over 90 degrees. When trying to start it the fuel relay comes on and then shuts off like normal but after I bleed the fuel line and try to start it the fuel line does not pressure up. I am wondering if the fuel pump could be going out or is it something to do with the PCM or some input to the PCM? Appreciate any help. Thanks.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    Jun 26, 2010, 11:55 AM

    Sounds like a classic Ignition Control Module (ICM) problem. Replace it and your problem will likely go away.
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