Exhaust Emissions System - Catalytic Converters: Description

Opel models use a catalytic converter on all California and High Altitude models to reduce hydrocarbon (HC) and carbon monoxide (CO) emissions. A high temperature control and warning system may be used. Its purpose its to prevent overheating of exhaust system due to high temperatures created in catalytic converter. If temperatures exceed 1830°F (999°C), a warning light and buzzer warns vehicle operator. The catalytic converter system works in conjunction with the coasting richer system. See COASTING RICHER SYSTEM in this section for additional information.