Re: IAC parameters

[Barry Tisdale <btisdale@cybersol.com>]

I'm looking for some detailed list & explanation of just what factor does
exactly what, similar to the docs on the GM stuff on fueling & timing.  It
has several uses, dashpot, stall saver and, naturally, idle speed control.
What exactly do all the parameters given in Promgrammer mean?  There are
more settings for IAC than for any other ECU function.

For instance, P/N vs neutral, small error vs large error, retract vs.
extend gainwords; why would a larger error call for a smaller correction?

Thanks - Barry

>It's function?, with out meaning to sound smart is bypass air around the
>butterfly.
>
>It's usage includes
>addition air when cold
>correction for various loads:
>   Power Streering
>   A/C
>   (I think some times for over heating, and low voltage)
>   (various smart uses like the cadillac overheat strategy)
>Emissions (Over run)
>Idle speed correction
>Stall Prevention
>To insure hot restart fuel purge
>Probably a couple others
>Grumpy
>

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