Idle Help

Discussion in '94-95 5.0 Tuning' started by Guero, Apr 14, 2007.

  1. Guero New Member

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    So I kinda got my idle pretty good at a stand still, but if the car is rolling and speeds like 20MPH+ it idles like around 1500 rpms. Were do I go in Tweecer to fix this???? Thanks guys
    Guero, Apr 14, 2007
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  2. tjh566 New Member

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    It suppose to do that, Theres a certain command in there that it wont allow a drop to idle unless your going like less than 5 mph. I dont think you can fix that. Mabye grady and come in here and confirm this.
    tjh566, Apr 14, 2007
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  3. Guero New Member

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    Thats gay cuz its f'ing annoying
    Guero, Apr 14, 2007
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  4. tjh566 New Member

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    just gear brake, sounds better anyways :nice:
    tjh566, Apr 15, 2007
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  5. final5-0 New Member

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    I've found you can have that hanging idle if you got two things outta
    whack that kinda work together.

    The tb blade stop screw
    and
    The tb air bleed screw

    Basically ... you wanna have the stop screw just barely holding the blade
    open to keep it from sticking on the side of the tb bore.

    I have seen the bleed screw being out too much will also cause this issue

    These two next things can greatly help you obtain a stable idle ;)

    You also wanna up your tb airflow value scalar a bit
    and
    Your ISC Neutral Idle Airflow function values as well

    There are specific procedures for obtaining the best values for that
    scalar and those function points

    Look here in tech and tuning for info about the methods
    and
    I think I got some info on my site for the details as well

    however

    If you wanna shoot from the hip :D

    You could add about 10% to each function cell
    and
    About 70% to that scalar

    It should get you closer :shrug:

    Grady
    final5-0, Apr 15, 2007
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  6. tjh566 New Member

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    that will help it but ive read around and people said you cant get it to go completely away because of a function of the comp, ive tried to get mine to go away, now it only hangs at like 1100 or so.
    tjh566, Apr 15, 2007
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  7. final5-0 New Member

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    I agree ... My findings as well :nice:

    I did not mean to imply you could make it go completely away.

    A certain amount of that is normal and intended by Ford.

    I should have made it clear my focus was on an excessive amount.

    Grady
    final5-0, Apr 15, 2007
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  8. WhiteDevil New Member

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    Mine drops to around 1100 while im coasting until i am almost to a stop the it drops to my 800rpm idle. Seems pretty normal to me.
    WhiteDevil, Apr 17, 2007
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  9. m0l0 New Member

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    Yes Hanging idle is normal to some sort of grade, how ever there is a function called "ISC Dashpot Decay Rate" where you can adjust the dropping of rpms on neutral, i have not tried that function personally but a lot of peeps use it, you can give a try
    m0l0, Apr 17, 2007
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