At 11:20 PM -0600 1/28/02, John Rodgers wrote:
>
>This little gizmo MUST be disconnected when you set the idle speed
>adjustment. It does two things: 1) keeps the idle speed up on a cold
>start so the engine doesn't stall. When the engine warms up, the ECU cuts
>it out of the circuit because it is no longer needed. 2) The ISV kicks up
>the engine idle rpm to 1200/1300 rpm when the AC is on to prevent the
>compressor load from stalling the engine. So far as I know this is the
>only two times the ISV come into play.

        Ummm...AFAIK it also comes into play when the power steering pump
        is stressed by turning the front wheels when stationery at
        the extreme left or right position.