B2300 SE Regular Cab 2WD L4-2.3L VIN D (2001)
Catalytic Converter: Description and Operation
EXHAUST SYSTEM COMPONENTS
Three-Way Catalytic Converter
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The three-way catalytic (TWC) converter contains either platinum (Pt) and rhodium (Rh) or palladium (Pd) and rhodium (Rh). The TWC
converter catalyzes the oxidation reactions of unburned HCs and CO and the reduction reaction of NOx. The three-way conversion only occurs
with the air fuel/ratio near stoichiometry.
