V90 L6-2.9L VIN 96 B6304S (1998)
material. In Three-Way type converters, rhodium is used as the catalyst to break down oxides of nitrogen into its components, nitrogen and
oxygen.
Operating temperature
The effective conversion of pollutants begins at an operating temperature of about 250°C (480°F). The ideal operating temperature for maximum
conversion and long service life is 400°C - 800°C (750°F - 1500°F).
Engine malfunctions, for example misfires, can cause the temperature of the converter to increase to more than 1400°C (2500°F). Such extreme
temperatures may destroy the converter by melting the substrate material.
CAUTION:
The use of leaded fuel will permanently render the converter ineffective. Lead compounds used in leaded fuels are deposited in the pores
and on the surfaces of the active material, reducing or eliminating exposure of active material to the exhaust gases. Excessive engine oil
residues can also ruin the catalyst.
