Neon L4-2.0L VIN C (1998)
Idle Speed: Testing and Inspection
Fig. 31 PCV Vacuum Nipple
1. Turn ignition key off.
2. Disconnect the PCV valve hose from the intake manifold nipple (Fig. 31). Cap the PCV vacuum nipple.
Fig. 32 Purge Hose
3. Disconnect purge hose from the nipple on the throttle body (Fig. 32).
Fig. 33 Orifice 6457 Attached To Purge Nipple
4. Use a piece of hose to attach Air Metering Orifice 6457 (0.125 in. orifice) or equivalent, to the purge nipple on the throttle body (Fig. 33).
5. Ensure that all accessories are off.
6. Connect the DRB or equivalent scan tool to the data link connector inside the passenger compartment.
7. Run engine in Park or Neutral until the cooling fan has cycled on and off at least once (180°F).
8. Using the DRB or equivalent scan tool, access Minimum Airflow Idle Speed.
9. The following will then occur:
