Exhaust Gas Recirculation (EGR) System
WARNING: This page is about a different car, the 2006 Mercury Milan, 2006 Lincoln Zephyr, and 2006 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
The exhaust gas recirculation (EGR) system:
- Returns a small amount of exhaust gas into the engine for recombustion.
- Reduces the overall combustion temperature and provides a significant reduction of oxides of nitrogen (NOx).
The EGR valve:
- Is electronically controlled by the powertrain control module (PCM).
- Is connected to the exhaust manifold by the EGR valve-to-exhaust manifold tube.
- Controls recirculated exhaust gas flow to the intake manifold.
- Monitors the flow of recirculated exhaust gases through the EGR valve-to-exhaust manifold tube.
- Returns a signal to the PCM.
The amount of recirculated exhaust gas depends upon:
- Engine RPM.
- Intake manifold vacuum.
- Exhaust back pressure.
- Engine coolant temperature.
- Throttle position.
The vehicle emission control information (VECI) decal:
- Is located on the hood.
- Lists the exhaust emission control system information.