05-29-2024, 11:55 AM
The IACV (intake air control valve) is a small stepper motor turning a threaded shaft that raises/lowers a piston within a chamber to control idle speed. When the key is turned on, it runs from one end of its range to the other to learn the limits. If the bike is started when it is still going through its cycle, it could/would cause the high idle.
