Idle Air Control Valve: Installation
- Before installing new IAC valve measure the distance that the valve is extended. If cone is extended too far, valve may be damaged when installed. Distance must be no greater than 1 1/8" (28 mm).
- Measurement should be taken from motor housing flange to end of cone. Determine if IAC valve is Type I or Type II. Type I has a collar at electrical terminal, Type II does not. See Figure .
- To retract Type I, exert firm pressure on valve. For Type II, compress retaining spring from valve while turning "in" with a clockwise motion. Return spring to original position.
- For both type valves, install valve with new gasket. Tighten to 13 ft. lbs. (18 N.m). Install connector on valve. Start engine. ECM will reset idle speed when vehicle is driven at 30 MPH.