THERMACTOR Air System: Notes

The Thermactor Air System used with Electronic Engine Control consists of the following components:

• Air Supply Pump
• Thermactor By-pass/Diverter Valve
• Dual Thermactor Air Control Solenoids
• Exhaust Check Valve
• Three-Way Catalytic Converter (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.