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    Juaneloco01's Avatar
    Juaneloco01 Posts: 1, Reputation: 1
    New Member
     
    #1

    May 28, 2014, 02:08 PM
    P0207 code on a 2002 Grand cheroke
    Keeps coming back after several repairs
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
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    #2

    May 28, 2014, 02:33 PM
    It may be a misfire on cylinder 7. Check for a vacuum leak, including with the brake booster. Using a scan tool, check the short-term and long-term fuel trim readings. Your mechanic by now has probably checked the wiring, injector, and PCM--I'm assuming they are fine. Only use Champion plugs in your Jeep--the exact same ones that originally came in it. Replace them if they have 40,000 miles or 3 years on them.

    If the problem persists, and the injector has been replaced, focus on the PCM--the #7 injector driver may be bad.

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