[Diy_efi] Out of the blue high idle

[Programmer]

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
>
>
>
> _______________________________________________
> Diy_efi mailing list
> Diy_efi at diy-efi.org
> http://www.diy-efi.org/mailman/listinfo/diy_efi


_______________________________________________
Diy_efi mailing list
Diy_efi at diy-efi.org
http://www.diy-efi.org/mailman/listinfo/diy_efi