So mbushore@icaen.uiowa.edu says:
> There you have it. My Van Idles Too Dern Fast.  To refresh my
>  
> Anywhay- ideas on the runaway train?  Checked my auxillary air,
> the idle screw is _all_ the way in, throttle cable slack, etc etc.
> Air Leaks?  How would I find these? 

Have you checked the throttle plate adjustment?  Vacuum hoses?  
Check for vacuum leaks.

Steven 

sjohnson@pcocd2.intel.com