Description & Operation: Notes

System's purpose is to reduce the emission of oxides of nitrogen by lowering peak combustion pressure and temperature during the power stroke. TCS system consists of a solenoid vacuum valve inserted in vacuum line leading to vacuum advance control unit, a temperature override switch located at firewall, and a solenoid control switch located at the transmission. In addition, a coolant temperature override switch is used on all V-8 engines. Jeep Wagoneers and trucks equipped with a 360" engine and standard cooling also incorporate a thermal vacuum switch.