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Coolant Control Exhaust Gas Recirculation (CCEGR)

1974-82 engines using EGR are equipped with a CCEGR valve mounted in the radiator top tank. When coolant temperature in the top tank reaches 65° F., the valve opens so that vacuum is applied to open the EGR valve. On some 1974-82 engines, a similar CCEGR valve set for 90° F. is mounted in the thermostat housing.