Exhaust Gas RECIRCULATION (EGR) System: Notes

The EGR system used with EEC-III has 3 major components: an EGR valve and sensor assembly, an EGR cooler, and a 2-solenoid EGR control assembly.

Utilizing engine manifold vacuum to operate the EGR valve, the ECA controls EGR gas flow. When EGR valve is open, exhaust gas from exhaust manifold is directed into the intake manifold and becomes part of the combustion cycle, helping to reduce NOx emissions levels.