Volvo S80 Owner's Manual page 174

Opening/closing the fuel cap
Fuel vapor expands in hot weather. Open the
filler cap slowly.
After refueling, close the fuel filler cap by
turning it clockwise until it clicks into place.
CAUTION
• Do not refuel with the engine running
Turn the ignition off or to position I. If the ig-
nition is on, an incorrect reading could
occur in the fuel gauge.
• Avoid overfilling the fuel tank. Do not
press the handle on the filler nozzle more
than one extra time. Too much fuel in the
tank in hot weather conditions can cause
the fuel to overflow. Overfilling could also
cause damage to the emission control sys-
tems.
1
If the fuel filler cap is not closed tightly or if the
engine is running when the vehicle is refueled,
the Check Engine Light (malfunction indicator
lamp) may indicate a fault. However, your
vehicle's performance will not be affected. Use
only Volvo original or approved fuel filler caps.
1
.
05 During your trip
Refueling
Emission controls
Three-way catalytic converter
• 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 condi-
tions, such as engine overheating or back-
firing. A properly tuned engine will help
avoid malfunctions that could damage the
three-way catalytic converter.
• Do not park your vehicle over combustible
materials, such as grass or leaves, which
can come into contact with the hot ex-
haust 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 cata-
lytic converter or exhaust system over-
heating.
• Remember that tampering or unauthorized
modifications to the engine, the Engine
Control Module, or the vehicle may be
illegal and can cause three-way catalytic
converter or exhaust system overheating.
This includes: altering fuel injection set-
05
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