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Thread: Tps dips in the middle of acceleration

  1. #1

    Tps dips in the middle of acceleration

    I have an issue where the throttle dips from 70% down to 50% in the middle of an acceleration without a peddle position change. It dips and returns quickly. No wheel spin for traction control. Can someone look at the Log and tune to see what it may be? I just don't see what is causing it. Looked at the ETC tables and they are good, looked at the spark tables and nothing stand out in the area where the dip occurs. When it occurs I am moving from a slow roll to a steady pedal increase. Thanks for anything you can suggest.
    2011 GMC Sierra 4X4 SLE Lysholm 2300 Supercharger 5" BDS Lift, 33X12.50X20 Nitto's and 20" Chrome Wheels.