[Diy_efi] Out of the blue high idle

[Jim Yeagley]

Here's something I vaguely remember, when changing the position of the IAC,
the ECM needs to find the closed position for the valve to assign that
position to zero.  This was done by driving the vehicle over 35 mph for some
short amount of time.

Jim Yeagley

----- Original Message -----
From: "TomQ" <zippy at tomquinn.com>

> Thanks for the advice Joe! I tried the "plug small port in the top of the
> throttle
> body that feeds the IAC valve passage". That is it. The idle came way down
> right away. I cleaned the snot out of the passage way but it still is
open.
> I then pulled the valve out a little so it plugs the hole. It did and the
> idle was down around 600. I then kept revving the motor up and down and
the
> idle slowly crept up. I stopped at 1200 rpm. I am going to take a look at
my
> program to make sure the idle is correctly stated. Any way can take some
> volt measurements to see if the valve is being "told" to open more then it
> should?
>
> -TomQ



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