Hans,
Yes, ideally this is the case. I run my idle at 700 rpm. If I move up to 850, IAC will be at 10-15. When I set minimum with the IAC pintle fully closed, I set it to 600 RPM. Then reset the TPS to 0.55 volts. Plugged the IAC back in and it settled in and slowly walked back to 0. Can't get the idle any lower with the IAC disengaged. If I moved my idle speed up, no problem holding 10.
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