Minimum Airflow (3.3L)
- Connect DRB-II to vehicle. Ensure engine is at operating temperature.
- Connect tachometer to engine. Turn engine off. Disconnect PCV hose from intake manifold. Attach Orifice (6457) to manifold. Orifice size is .125" (3 mm).
- Plug PCV valve nipple. Disconnect idle purge hose at throttle body. Idle purge hose is located on top of throttle body. Plug idle purge hose nipple on throttle body. Start engine. 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.
MINIMUM AIRFLOW
| Application | RPM |
|---|---|
| 2.2L | 1100-1300 |
| 2.5L | 1050-1250 |
| 2.2L Turbo & 2.5L Turbo | 600-1050 |
| 3.0L | 750-950 |
| 3.3L | 700-950 |