Emission Control Systems: Description and Operation

ENGINE EMISSION CONTROL

CAUTION: Do not remove any part of the engine emission control system. Operating the engine without the engine emission control system will reduce fuel economy and engine ventilation. This will weaken engine performance and shorten engine life.

Some engines are equipped with an exhaust gas recirculation (EGR) system. The function of the EGR system is to reduce the emission of nitrogen oxide (NOx).

EGR Valve And Cooler - 6.0L Diesel - Vehicles Built Before 8/31/03:

EGR Valve And Cooler - 6.0L Diesel - Vehicles Built After 8/30/03:

The engine emission control consists of the following components:
- EGR valve
- vacuum regulator solenoid
- EGR tube
- emission control vacuum harness
- EGR cooler
- differential pressure feedback EGR sensor