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Thread: Idle Hunting

  1. #1
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    Ok so my motor runs, but im trying to set the idle.

    Its supercharged so i always though it would have some hunting, but not this much. With the supercharger off, it goes between 800-1300rpm with the supercharger on its goes between 600-2000 rpm

    is there any speical trip to tunning the ecu or something to lower how much it dose it or do i have to get used to it....


    J

  2. #2
    Senior Member riceburner's Avatar
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    Whilst i never heard of it working on a gze i know my 4age that if the idle hunts like that, a quick clean of the throttle body will usually solve it.
    Insert witty comment here....

  3. #3
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    nar its all squeeky clean,

    got a couple ideas, like atm i havnt tuned the VE maps, so i might be ideling and getting to much fuel (you can smell it bad) reving up then falling back to idel

  4. #4
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    yes it is very simalar....

    getting a vid tomorow

  5. #5
    « R²» Blinky
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    Awww cmon man, there is nothing wrong with lol, im hoping mine dosent go away lol


  6. #6
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    just got mine started just then..it does the same too

  7. #7

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    Is your throttle pre-SC?

    If so then you must have a long inlet tract (piping, SC, piping, IC, piping, manifold). To tune idle with such a big inlet is hard. One important thing is to adjust the idle speed response to be SLOW.

    Too fast a response will cause hunting, too slow will let it fall through idle.

    Unsure what computer you are using and what options it has, but on my Wolf I could set default ISCV position by temp, ISCV tracking speed and target idle speed.

    To get it to work "nicely" I upped the idle speed to 1100, set the default ISCV position a little higher than required (so you don't fall through idle when getting off the gas) and slowed the tracking right down. Not perfect, but it works most of the time.

    Hen

  8. #8
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    ok found problem, it was 2 things, one after i ajusted the idle control i forgot to reste the TPS calibration back to 0, two, the troatle is aculty moving in and out from the section, when i hold it down it smooths out to almost no hunt.

    Hen i am running the TB before the supercharger but my intake track is small compared to normaly gze piping (due to IC intake/outlet same side) im running a megasquirt, but i havnt bothered installing a idle controller.


    So now after a few secs (after start enric) its stops hunting if the throale is closed

  9. #9
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    vid up in my project thread, better than it was before i fiddles withit, but mainly at the start was kinda what it was like

  10. #10
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    does that apply to n/a 16v?

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