Minimum Airflow (3.0L)
- Connect DRB-II to vehicle. Ensure engine is at operating temperature.
- Connect timing light and tachometer. Turn engine off. Disconnect engine coolant temperature sensor. Disconnect PCV hose from PCV valve.
- Plug PCV valve nipple. Disconnect idle purge hose at tee fitting. See Fig 1
. Attach Orifice (6457) to intake purge hose. Orifice size is .125" (3 mm).
- Start engine. Ensure ignition timing is to specification. Let engine idle for at least one minute.
- Using DRB-II, access MINIMUM AIRFLOW IDLE SPEED. When this mode is accessed, AIS motor will fully close, spark advance will be fixed and fuel delivery will not change.
- Check minimum airflow. See MINIMUM AIRFLOW
. If minimum airflow is not to specification, replace throttle body. Disconnect all test equipment.
Courtesy of CHRYSLER MOTORS.