Chart 4
Unique Idle Concerns:
- Slow Return To Idle
| SYSTEM/COMPONENT | REFERENCE ( PINPOINT TEST - CNG, FLEX-FUEL & GASOLINE ) unless noted |
|---|---|
| Vacuum Leaks, Throttle Body | Visual |
| PCV System | GO to G: Positive Crankcase Ventilation (PCV) System STEP HG1. |
| Intake Air System (air leaks) | GO to U: Intake Air Systems STEP HU1. |