[Diy_efi] Out of the blue high idle

[patrick movey]

Sounds like your iac is stuck to me this happened to me when I started mine, 
On the f moter. Thanks for the help by the way!  This is my email adress, 
arrowsp was my dads.


From: "Programmer" <nwester at eidnet.org>
>Reply-To: List for general do-it-yourself EFI talk <diy_efi at diy-efi.org>
>To: "List for general do-it-yourself EFI talk" <diy_efi at diy-efi.org>
>Subject: Re: [Diy_efi] Out of the blue high idle
>Date: Wed, 2 Jul 2003 08:13:39 -0600
>
>When the TPS fails, the new carbon track becomes the "auto zero" point. You
>then end up with a high idle when the throttle is at rest. Replace your 
>TPS.
>
>Lyndon
>
>----- Original Message -----
From: "TomQ" <zippy at tomquinn.com>
>To: <diy_efi at diy-efi.org>
>Sent: Wednesday, July 02, 2003 12:35 AM
>Subject: [Diy_efi] Out of the blue high idle
>
>
> > Hi all,
> >
> > I have been running a GM '747 TBI system on my motor (4.2L I6) now for
>about
> > two years and it has worked great with no problems at all. All of a 
>sudden
>a
> > few days ago when I started it up it started to idle way up at around 
>2500
> > instead of 800. First thing I thought was maybe there is a leak in the
> > intake somewhere. I looked it over the intake trac but didn't see 
>anything
> > with holes or cracks in it. I did replace two intake caps that looked
> > questionable but that did not fix the problem. I am now getting an error
>21,
> > throttle position sensor too high. I am looking for advice on how I 
>should
> > start to tackle this problem.
> >
> > TomQ
> >
> >
> >
> > _______________________________________________
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>
>
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