D250 3/4 Ton Pickup 2WD V8-360 5.9L VIN 5 4-bbl (1988)
Catalytic Converter: Description and Operation
Catalytic Converter
OXIDATION CATALYST
The catalytic converter serves two purposes: it permits a faster chemical reaction to take place and although it enters into the chemical reaction, it
remains the same, ready to repeat the process. It contains a platinum coated, ceramic, honeycombed structure. Through a chemical reaction, the
platinum oxidizes HC and CO and converts them to carbon dioxide and water vapor. Effective operation of this type of catalyst requires temperatures of
600°F or higher as well as an adequate supply of oxygen in the exhaust system. Oxidation catalysts will normally "light off" (start oxidation) within two
minutes after the first start of a cold engine.
