ECM fault?

[Geoff Richards]

> > I beleive the 02 sensor is not used at idle as there is a richer idle
map ?
> > for idle
> > quality (smooth)
>
> Some ECMs (many? all?) _do_ use the O2 sensor at idle.  For example, the
> 2.8 MPFI as used in the Fiero.
>
> On the other hand, my carbed EEC IV Ford 2.8 needs to be rich at idle.
> Air injection is used to clean up the exhaust.  Trying to set the carb
> to stoich at idle wasn't pretty.
>
> --
> Ludis Langens                               ludis (at) cruzers (dot) com
> Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/

Thats what I get for dealing with only 1 type of ECM  :)
The pcm's used by Holden go to open loop at idle for smooth idle
I gotta get out more ;)
Thanks Ludis