Originally Posted by Captain Hook

Hi Les, I've never tried it that way, I suppose it's worth a try though. I always command the IAC as low as it will go, and then adjust idle rpm to ~350, (TPS should end up at .5 volts or less). I have always had good results doing it that way. Rule of thumb is, when you command the IAC all the way down, the engine should not stall, but close (usually around 300rpm it will stall). The idea is to keep the throttle blade open just enough so that it doesn't stick in the bore at idle. And that's assuming the throttle blade and bore are clean... on the underside too