Volvo 2006 XC70, Owner'S Manual

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112
Three-way catalytic converters
Three-way catalytic converter cautions
•
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 operat-
ing conditions, such as engine overheating or backfiring. A
properly tuned engine will help avoid malfunctions that could
damage the three-way catalytic converters.
•
Do not park your car over combustible 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), with an
intermittently firing or flooded engine, can cause three-way catalytic
converter or exhaust system overheating.
•
Remember that tampering or unauthorized modifications to the engine
or the vehicle may be illegal and can cause three-way catalytic
converter or exhaust system overheating. This includes:
-Altering fuel injection setting or components.
-Altering emission system components or location or removing
components.
-Repeated use of leaded fuel.
NOTE: Unleaded fuel is required for cars with three-way catalytic
converters
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