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Thread: AUJP ($8D) Idle Air Control (IAC) Logic

  1. #1
    Fuel Injected! 84Elky's Avatar
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    AUJP ($8D) Idle Air Control (IAC) Logic

    1000+ hours and done for now. I wanted to understand how the IAC worked under AUJP ($8d), so went through the code to learn. As the project progressed, the uploaded document resulted to record the findings. Also uploaded is a companion document which is an overly commented version of JP's S_AUJP 2 source code hack in a Word .doc format. It's a work-in-process for me as I learn what the code does.
    None of this may be meaningful to anyone else as some of it deals with code details; but in the end, it does at least describe how the IAC works in AUJP. Also covered:

    • Fans and Warm Kickdown
    • Startup Delay Period
    • IAC Kickdown
    • Throttle Follower
    Attached Files Attached Files

  2. #2
    RIP EagleMark's Avatar
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    Sorry I missed your post on this, took a quick look and what an amazing article! Thanks for sharing with us. I have added it along with your other work and links to the $8D info thread as well!


    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
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  3. #3
    Fuel Injected! 84Elky's Avatar
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    Quote Originally Posted by EagleMark View Post
    Sorry I missed your post on this, took a quick look and what an amazing article! Thanks for sharing with us. I have added it along with your other work and links to the $8D info thread as well!

    Thanks Mark for your kind words and a great site!

  4. #4
    RIP EagleMark's Avatar
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    It's only a great site because of great people like you!

    1990 Chevy Suburban 5.7L Auto ECM 1227747 $42!
    1998 Chevy Silverado 5.7L Vortec 0411 Swap to RoadRunner!
    -= =-

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