Converting a small block 94/95 from MPFI to TBI - in case anyone else wants to go this route

[dsrtjeeper]

IAC should be sitting around 5% at a hot idle with no accessories running including fans.

 

[dsrtjeeper]

Also, butterflies should never be fully closed. This can often cause the butterflies to stick in the bore. If the car idles fine with the butterflies fully closed, there's either a vacuum leak or the IAC is opening to supply air. What is the IAC % at idle?