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Thread: Please anyone! 90MM 2.4l ground spark question

  1. #1

    Array
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    08-14-2018
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    Location

    Walkersville,MD
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64

    Please anyone! 90MM 2.4l ground spark question

    Have ground to power transistor but no pulse. Can a bad coil (checks in spec) cause a no pulse signal at the transistor.
    Have no spark and have checked 2 diagnosed good ecu.
    Been frustrating for months
    Thanks

  2. #2



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    03-26-2011
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    1,507
    Location

    Vacaville, CA
    Vehicle

    1989 Mitsubishi Mighty Max
    Engine

    4G63-T
    Could the power transistor be bad? I know it is kind of common on 4g63's/DSM's. If not check all the grounds for the ECU/wiring.

  3. #3

    Array
    Status
    Offline
    Join Date
    08-14-2018
    Posts
    47
    Location

    Walkersville,MD
    Vehicle

    1990 Mitsubishi Mighty Max
    Engine

    4G64
    New transistor and grounds all checked.
    But thanks for the reply..

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