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Thread: E78 Idle Help

  1. #1
    Potential Tuner
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    Oct 2024
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    E78 Idle Help

    Hi. First post here. I am trying to solve a small idle issue I have. My Base idle is set to 600RPM when warm. This is pretty accurate when in park and neutral but in gear it wants to idle around 700-750 RPM. The truck is a 2011 2500HD with a E78 ECM. I will post the tune as well. I am assuming it has to do with a base airflow but I am still learning.
    Base Idle.JPG
    Attached Files Attached Files

  2. #2
    Senior Tuner Cringer's Avatar
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    Aug 2021
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    Quote Originally Posted by RJINATOR View Post
    Hi. First post here. I am trying to solve a small idle issue I have. My Base idle is set to 600RPM when warm. This is pretty accurate when in park and neutral but in gear it wants to idle around 700-750 RPM. The truck is a 2011 2500HD with a E78 ECM. I will post the tune as well. I am assuming it has to do with a base airflow but I am still learning.
    Base Idle.JPG
    Your [ECM] 12098 - Rolling Idle Speed: Desired rolling idle speed table takes over after you are moving around and that is commanding 700 rpms at 0 mph.

    <<< A standard approach will give you standard results >>>

    My Tuning Software:

    VVE Assistant [update for v1.5]
    MAF Assistant
    EOIT Assistant

  3. #3
    Potential Tuner
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    Oct 2024
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    Thank you!!! I will adjust and report back!