NOX System: Description: Notes

Chrysler Corp. 1971-72 light duty trucks sold in California are equipped with a NOx System for control of oxides of nitrogen in exhaust emissions. System controls distributor vacuum advance in lower gear ranges. NOx system consists of a special camshaft designed to give increased valve overlap, 185° coolant thermostat, solenoid vacuum valve and on 1972 models, an Exhaust Gas Recirculation system (EGR). For additional information on E.G.R., see Exhaust Gas Recirculation in this Section. Depending on transmission type, the following components control operation of solenoid vacuum valve: