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Thread: fuel injectors shuting off

  1. #1
    Join Date
    Apr 2018
    Location
    Milwaukee
    Posts
    2
    My Cars
    2007 x3

    fuel injectors shuting off

    my issue is this, i have a 2006 x3. 3lt engine, i get the code misfire cylinder 3. i listen to the number 3 injector and it was not making noise. i replaced injector and was still getting the code. when i start the car the injector works for about 30 seconds then stops. once it stops i can restart the car and it will work for 30 seconds, any ideas? thanks

  2. #2
    Join Date
    Jul 2011
    Location
    Arlington, VA
    Posts
    9,933
    My Cars
    2018 BMW M240i
    The engine computer (DME in BMWspeak) is shutting off the injector. Basically, the DME provides the ground signal to the injector to open it. There’s an underlying problem. The injector’s behavior is a symptom. Rescan the DME with a good code reader.

  3. #3
    Join Date
    Apr 2018
    Location
    Milwaukee
    Posts
    2
    My Cars
    2007 x3
    I figured it was a software issue, i will try that, thank you

  4. #4
    Join Date
    May 2005
    Location
    Houston, TX.
    Posts
    21,298
    My Cars
    15 X5, 02 330i, 09 MiniS
    It is a lot cheaper to have a experienced technician diagnose the vehicles problem than it is to throw parts randomly at the vehicle hoping to get lucky.
    Tenured Automotive Service Professional - Avid BMW Enthusiast

  5. #5
    Join Date
    Dec 2013
    Location
    Chicagoland area
    Posts
    4,372
    My Cars
    EXOTICS
    Swap the plug to cylinder #1 and coil to cylinder #6.
    This way you can discern whether it is the plug or the coil causing the misfire,
    leading to the fuel cut-off.

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