940 L4-2320cc 2.3L DOHC VIN 89 B234F FI (1991)
Catalytic Converter: Description and Operation
Catalytic Converter
The three-way catalytic converter is used to purify the exhaust gases of unburned residues of
carbon monoxide (CO)
hydrocarbons (HC)
nitrous oxides (NOx)
by chemical reaction i.e. combustion with unburned oxygen.
The unit converts 90-95% of these noxious substances into innocuous
water (H20)
carbon dioxide (C02)
nitrogen (N2)
The active surface area of the unit is 32 000 m2 and the noble metal content is 4 g of platinum/rhodium.
NOTE: Any trace of lead in the fuel will quickly damage the catalytic converter beyond repair.
