THERMACTOR Air System: Notes

The Thermactor Air System used with EEC-III consists of the following components: an air supply pump, Thermactor By-pass/Diverter valve, dual Thermactor solenoids, 2 check valves, and a 3-way converter (referred to as COC/TWC).

The efficiency of the catalytic converter is dependent upon temperature and the chemical makeup of the exhaust gases. Air must be provided to the COC catalyst for the oxidation of HC and CO byproducts of the TWC catalyst.