Idle Air Control Valve: Installation
- Before installing new IAC valve, measure the distance that the valve is extended. See Fig 1 . 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 valve housing flange to end of cone. Determine if IAC valve is Type I or Type II. Type I has a collar at electrical terminal and Type II does not. See Fig 1 .
- To retract Type I, exert firm pressure on valve. To retract Type II, compress retaining spring while turning valve in with a clockwise motion. Return spring to original position.
- Either valve should be installed with a 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 above 35 MPH.