[Shotimes] It runs!

[Kevin & Cheryl Airth]

Mike:
 You are correct. You should not adjust it. I have heard people adjusting
them but always a little more open. So that would keep the throttle plate
from sticking shut. Doug L. once told me that you should have a 650 rpm idle
with all the accessories turned off and the engine at idle. In other words
the IAB is only used for keeping the idle speed constant as the engine is
loaded plus a very slight boost to the factory idle of 800 rpm. Of course
this goes against the troubleshooting of the IAB. If you unplug the IAB the
engine is suppose to stall. The instructions do not say to do this with all
the accessories turned off though?  So maybe that small amount of  drag is
the reason?
 I don't know if that's the way Ford explains it or not?
.
.



> Hmmm.  I've always been told to never touch that screw.  As I have read,
the
> purpose of the screw is to set the point where the throttle plate closes
> without spring pressure being applied to the throttle body bore.
>
> Mike Bruce

>
>
> The IAB can only close completely, so after it's closed all the way then
the
> adjustment screw will raise the idle. Actually the directions from Ford
have
> you unplug the IAB BEFORE adjusting the set screw.
> .
> .
>
>
>
> > Yes, but the computer will sense the RPMs are too high and close the
> > IAB down even farther, thus negating the idle screw.
> >
> > Z
>
> > > There's an adjustment screw that you can crank on the throttle body in
> order
> > > to raise the idle.  This is not the correct way to set idle and
somewhat
> > > bypasses the IAB but it might help you to determine what idle speed
you
> > > need, then you could get that put into your new programming from the
> > > beginning.
> > >
> > > > I'm looking to raise the idle with the hopes
> > > > of getting the car to idle a little smoother.