IAC parameters

[Bruce Plecan]

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

> Is there any documentation out there on the function(s) of the IAC, as to
> what, how & why?  Interested specifically in the SyTy 749, but it should
be
> pretty generic among ECUs.  Available docs seem to lack this section.
> Thanks - Barry


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