Grand Voyager V6-201 3.3L VIN R SMFI (1997)
Catalytic Converter: Service Precautions
NOTE: There is no regularly scheduled maintenance on the catalytic converter. If damaged, the converter must be replaced.
CAUTION: Due to exterior physical similarities of some catalytic converters with pipe assemblies, extreme care should be taken with replacement
parts. There are internal converter differences required in some parts of the country.
REACTION
The combustion reaction caused by the catalyst releases additional heat in the exhaust system. Causing temperature increases in the area of the
reactor under severe operating conditions. Such conditions can exist when the engine misfires or otherwise does not operate at peak efficiency. Do
not remove spark plug wires from plugs or by any other means short out cylinders of the exhaust system if equipped with a catalytic converter.
Failure of the catalytic converter can occur due to temperature increases caused by unburned fuel passing through the converter.
CATALYSTS
The use of the catalysts also involves some non-automotive problems. Unleaded gasoline must be used to avoid poisoning the catalyst core. Do not
allow engine to operate at fast idle for extended periods (over 5 minutes). This condition may result in excessive exhaust system and floor pan
temperatures.
