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Thread: e38 Set idle goes up during drive

  1. #1
    Tuner in Training
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    e38 Set idle goes up during drive

    2010 silverado e38, 205/217 112+2, .500 /.500 cam

    Idle starts off correct at set idle@ 700rpm , after driving for less than an hour set idle goes up to 800rpm and stays there until ignition restart, any help would be great,
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  2. #2
    Tuner in Training
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    Just to clarify, after about 30 to 40 min of drive time at a stop light not moving the ecm is commanding 800 rpm, this is driving me crazy, does anyone know why It's doing this ??

  3. #3
    Tuner in Training
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    Looks like disabling COT fixed the problem,

  4. #4
    Tuner in Training
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    Well I finally figured it out, disregard that last post lol, ended up being the virtual torque tables, just wanted to post if this could help someone else, I had raised a portion of the virtual torque tables awhile back trying to get the throttle plate to open more, I was still very new at this, and forgot about me adding 20 ib/h in the 200 to 600 cylinder-airmass, put it back to stock and no more problem,