Durango 4WD V8-5.9L VIN Z (1998)
5. Disconnect the idle purge vacuum line from fitting at throttle body This vacuum line is located on the front of throttle body next to the MAP
sensor. Cap the fitting at throttle body after vacuum line has been removed.
6. Connect the DRB scan tool to the 16-way data link connector. This connector is located under the instrument panel to the left of the steering
column.
7. Start the engine.
8. Using the DRB scan tool, scroll through the menus as follows: select-System, select-Engine, select-Fuel and Ignition, select-Actuator Tests, select
Engine rpm and select-Minimum Air Flow.
9. The DRB scan tool will count down to stabilize the idle rpm and display the minimum air flow idle rpm. The idle rpm should be between 500 and
900 rpm. If the idle speed is outside of these specifications, replace the throttle body.
10. Disconnect the DRB scan tool from the vehicle.
11. Remove cap from idle purge fitting at throttle body and install vacuum line.
12. Remove orifice tool and connect vacuum line to PCV valve.
13. Install air cleaner element housing.
