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Operation Manual

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1979 Volvo 242 244 245
Catalytic Converter
This is a supplementary device in the exhaust system, designed to clean the remaining dirty exhaust
gases.
This device is mainly a container with a ceramic material insert, designed to let the exhaust gases pass
through channels in the insert. The channel walls are covered by a thin layer of platina-palladium. These
metals act as catalysts, permitting a chemical action to occur without actually taking part in it.
The carbon monoxide content will increase if the Catalytic Converter is damaged.
Lambda-sond
TM
equipped vehicles use Catalytic Converters containing platinum and rhodium.
CAUTION:
Vehicles with Catalytic Converter must use unleaded fuel only. Otherwise the Catalytic Converter
will become damaged and ineffective.
Torque catalytic converter mounting bolts (all U.S.A. models)
The Catalytic Converter mounting bolts should be torqued every 15,000 miles (25,000 km).
VI Engine Evaporative Emissions
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