Quote:
Originally Posted by 80stech
@Masospaghetti--- The dealer should be able to tell you if the programming update has been done, unlikely that it hasn't. If the IAC controls the tip in throttle then I would buy a new IAC motor, good chance someone has used carb cleaner and the o-rings are swollen and dragging a bit.
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Called the dealer and that programming actually has not been done but of course it's requires a diagnostic fee of $285 to even start

but probably worth doing to rule it out.
Went for a drive today and the problem persists after the additional IAC cleaning and lubricating.