Volvo 2005 C70 - Manual (Page 135)

129
Three-way catalytic converter
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 converter.
• 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 intermit-
tently firing or flooded engine, can cause three-way catalytic convert-
er or exhaust system overheating.
Heated oxygen sensor
Heated oxygen
sensor
Insulation
Ceramic core
• 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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