Exhaust Gas RECIRCULATION: Notes

WARNING: This page does not describe the selected car, but rather 33 other vehicles, including the 2002 Saturn Vue, 2002 Pontiac Montana, 2002 Pontiac Aztek, 2002 Oldsmobile Silhouette, and 2002 Oldsmobile Bravada. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: For additional information on the Exhaust Gas Recirculation (EGR) system, see appropriate SYSTEM & COMPONENT TESTING article.

The EGR system limits formation of oxides of nitrogen (NOx) emissions by reducing peak combustion chamber temperatures in which NOx is formed. EGR system consists of an EGR valve, EGR vent/EGR solenoids and EGR fault detection. A vacuum pump is required to provide a vacuum source to operate the EGR system.