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Home >> Ford >> 1990 >> Bronco II 4WD, Standard, M5OD-R1 >> Repair and Diagnosis (Single Page) >> Engine Performance >> Theory and Operation >> Engine Controls - Theory & Operation >> EGR Systems >> Notes

EGR Systems: Notes

NOTE: Not all listed components are used on any one system. Component usage depends on calibration of complete vehicle.

The Exhaust Gas Recirculation (EGR) system distributes exhaust gas into intake mixture. This lowers combustion temperatures due to lower concentrations of oxygen. Lowering combustion temperatures reduces NOx emissions.