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Thread: Crazy spark fluctuation

  1. #1
    Potential Tuner
    Join Date
    Apr 2021
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    2

    Crazy spark fluctuation

    Driving down the road at about 54/55 mph and 1440-1450 rpms the spark is jumping all around what would cause the issue, i have the log i can send it if someone doesn?t mind looking it over

  2. #2
    Advanced Tuner dhoagland's Avatar
    Join Date
    Jun 2015
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    Aubrey TX
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    890
    Post log and Tune
    2011 Camaro 2SS Convertible L99 Bone Stock for now
    2003 Dodge 2500 5.9 Cummins QC 4x4. Airaid, 2nd Gen Intake, Grid Heater Delete, D-Tech 62/65/12, Magnaflow. Bully Dog: Propane Injection, Triple Dog W/Outlook Crazy Larry. Edge EZ, BD Flow-Max, 48RE: Sonnax Sure Cure/Transgo combination, Derale turbulator, billet input, Triple Disc, Super servo, 4 ring Accumulator. :beer

  3. #3
    Advanced Tuner
    Join Date
    Aug 2018
    Posts
    293
    Possibly jumping around between the spark tables at low throttle input. Check your fuel trim cell when it's happening to get an idea of which spark table it is referencing, or if it's jumping back and forth between them.