Grand Prix V6-191 3.1L VIN M SFI (1998)
Idle Air Control (IAC) Valve: Adjustments
Idle Air Control Valve Pintle Retraction (Manually)
The IAC valve may be damaged if installed with the cone (pintle) extended more than 28 mm (1-1/8 in). Measure the distance that the valve is
extended before installing a new valve. The distance from the idle air control valve motor housing to the end of the idle air control valve pintle should
be less than 28 mm (1-1/8 in). Manually compressing the pintle until the extension is less than 28 mm (1-1/8 in).
