The evaporative emission (EVAP) system:
WARNING: This page is about a different car, the 2004 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
- Is equipped with an on-board refueling vapor recovery (ORVR) system to control hydrocarbon emissions during refueling.
- Prevents hydrocarbon emissions from reaching the atmosphere.
- Stores fuel vapors in the evaporative emission (EVAP) canister that are generated during vehicle operation or hot soak, or vehicle refueling, until they can be consumed by the engine.
- Routes the stored fuel vapors to the engine during engine operation.
- Is controlled by the powertrain control module (PCM) which uses various sensor inputs to calculate the desired amount of purge flow. The PCM regulates the purge flow, induced by the application of intake manifold vacuum, by varying the duty cycle applied to the EVAP canister purge valve.
- Has an evaporative emission test port for test purposes.