Grand Cherokee 2WD L6-4.0L VIN S (1997)
Idle Speed: Specifications
Idle .................................................................................................................................................................................................................. 500 to 900 rpm
Idle speed is controlled by the Powertrain Control Module (PCM) through the Idle Air Control (IAC) Motor, and is not adjustable.
CAUTION: This vehicle is equipped with a factory adjuste4d throttle plate position set screw. Never attempt to adjust idle speed using this screw,
unless directed to do so in a service procedure.
