+ Reply to Thread
Results 1 to 3 of 3

Ford: Idle set.

  1. #1
    darrell
    Guest

    Idle set.

    I know it says in big block letters that idle and air mixture are
    factory set and cannot be adjusted.Can anyone tell me why not.There is
    an idle adjustment screw on my 92 topaz.Is this an environmental issue
    or mechanical.
    Thanks


  2. #2
    lugnut
    Guest

    Re: Idle set.

    On Thu, 25 Sep 2003 20:50:58 GMT, darrell darcy
    <ca> wrote:
     


    The idle speed is controlled by the ECM. The screw you see
    is to set the base idle which is not necessarily the idle
    speed that the ECM is going to want. If you set the idle
    speed too high, you may start getting fault codes and
    erattic engine performance. The only thing you can do in
    that area unless you know exactly what you are doing is to
    clean the throttle body which will usually correct any
    problems related to the physical adjustment of the throttle.
    Bottom line is to leave it as is unless you know both why
    you are making an adjustment and exactly how to do it.

  3. #3
    Thomas
    Guest

    Re: Idle set.

    The Idle speed and mixture are controlled by the processor. The "idle adjustment
    screw" you see on your Topaz is what is called the throttle hard stop. It's job
    is to prevent the butter fly valve from closing too far and binding in the
    throttle body at closed throttle. To a lesser degree it sets the lowest RPM for
    the engine in the event the air by pass valve closes completely.
    "darrell darcy" <ca> wrote in message
    news:ca... 



 

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts

Search Engine Friendly URLs by vBSEO 3.6.0

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48