Three-Way Catalytic Converter - Volvo XC90 Owner's Manual

Three-way catalytic converter -

general information
•
Keep your engine properly tuned. Certain
engine malfunctions, particularly involving
the electrical, fuel or distributor ignition
systems, may cause unusually high three-
way catalytic converter temperatures. Do
not continue to operate your vehicle if
you detect engine misfire, noticeable loss
of power or other unusual operating con-
ditions, such as engine overheating or
backfiring. A properly tuned engine will
help avoid malfunctions that could dam-
age the three-way catalytic converter.
•
Do not park your vehicle over combusti-
ble materials, such as grass or leaves,
which can come into contact with the hot
exhaust system and cause such materials
to ignite under certain wind and weather
conditions.
•
Excessive starter cranking (in excess of
one minute), or an intermittently firing or
flooded engine can cause three-way cat-
alytic converter or exhaust system over-
heating.
•
Remember that tampering or unauthor-
ized modifications to the engine, the Elec-
tronic Control Module, or the vehicle may
be illegal and can cause three-way cata-
lytic converter or exhaust system over-
heating. This includes: altering fuel injec-
tion settings or components, altering
emission system components or location,
or removing components, and/the repea-
ted use of leaded fuel.
NOTE
Unleaded fuel is required for vehicles with
three-way catalytic converters.
11 Specifications

Three-way catalytic converter

11
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