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Thread: Idle hunts when rolling in neutral coming to a stop

  1. #1
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    Idle hunts when rolling in neutral coming to a stop

    Once im stopped, it idles fine. The hunting occurs worse with the AC on, no where near as bad when AC id off. It constantly hunts only when rolling at any MPH in neutral (car is stick), once stopped, idle is stable and perfect. Any help is appreciated on what table to adjust, tune is attached. Should I adjust proportional airflow AC on?

    Texas speed stage 1 cam LS3 swap.
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    Last edited by Ls1c5vette; 1 Day Ago at 04:54 PM.
    2000 FRC Corvette with LS3 Swap

  2. #2
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    And log

  3. #3
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    Quote Originally Posted by Ls1c5vette View Post
    tune is attached. .
    tune is like looking at an car
    datalog is watching that car on the dyno.

    so with you only posting your tune, we cant see anything past that.

    always always post tune and log

  4. #4
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    Quote Originally Posted by bk2life View Post
    tune is like looking at an car
    datalog is watching that car on the dyno.

    so with you only posting your tune, we cant see anything past that.

    always always post tune and log
    Got it, any specific parameters I should log outside of the regular ones?
    2000 FRC Corvette with LS3 Swap

  5. #5
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    Quote Originally Posted by Ls1c5vette View Post
    Once im stopped, it idles fine. The hunting occurs worse with the AC on, no where near as bad when AC id off. It constantly hunts only when rolling at any MPH in neutral (car is stick), once stopped, idle is stable and perfect. Any help is appreciated on what table to adjust, tune is attached. Should I adjust proportional airflow AC on?

    Texas speed stage 1 cam LS3 swap.
    Most issues like this are caused by it being to rich in decel. I'd encourage you to use a wideband down near around idle and in decel. The fuel trims do not update fast enough to find the proper shape of the VE table.

    Also watch timing. Use timing to save idle dips. IF you see the timing dipping with the idle dipping you are going to make stalls/ surges worse.
    [email protected] - [email protected]
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  6. #6
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    Quote Originally Posted by Ls1c5vette View Post
    any specific parameters I should log outside of the regular ones?
    well i dont know what 'regular ones' are, so post your log and then can tell you what, if any, additions are needed.