just clean out the IAC with throttle body cleaner and and a Q-tip, let it soak for 5 mins and the howl will be gone. they tend to get sticky over the years.
my obsession is my 1995 Ranger Splash. 5/6 drop, mini notched, sporting 18x9 boss 304's
underdog line of fire, 66mm bbk tb, customized flowmaster exhaust, sport trac gauges, 8000k hids
"Minitruckers...Giving back to society...one fine at a time"