*Bump*- for a good description of the issue(s).. .
Sry, haven't the time atm...
But yeah, IAC can just be plain nasty. Take it off, clean w/ some carb or such cleaner, see what happens. If it were dead, you'd stall constantly...
Hit the throttle body while you're at it.
Long crank... check fuel pressure at the fuel rail.
*If you don't have this link already
http://www.lunghd.com/Tech_Articles/...iagnostics.htm
**Scroll all the way down. '88 is pretty close 'eh?
http://www.lunghd.com/Downloads_and_Links/FSM.htm
Also read... lots 'o good info, even if not specifically your issue.
http://www.automotiveforums.com/vbul...d.php?t=687635
~Good Luck!