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08 Starting and driving
08
298
Once the engine has stopped due to fuel
starvation, the fuel system needs a few
moments to carry out a check. Do this before
starting the engine, once the fuel tank has
been filled with diesel:
1. Insert the remote control key in the igni-
tion switch and push it in to the end posi-
tion, see Key positions (p. 76).
2. Press the START button without
depressing the brake and/or clutch pedal.
3. Wait approx. one minute.
4. To start the engine: Depress the brake
and/or clutch pedal and then press the
START button again.
NOTE
Before filling with fuel in the event of fuel
shortage:
•
Stop the car on as flat/level ground as
possible - if the car is tilting there is a
risk of air pockets in the fuel supply.
Draining condensation from the fuel
filter
The fuel filter separates condensation from
the fuel. Condensation can disrupt engine
operation.
The fuel filter must be drained at the intervals
specified in the Service and Warranty Booklet
or if you suspect that the car has been filled
with contaminated fuel, see Volvo service
programme (p. 346).
IMPORTANT
Certain special additives remove the water
separation in the fuel filter.
Related information
•
Diesel particle filter (DPF) (p. 299)
•
Fuel - handling (p. 296)
•
Economical driving (p. 300)
Catalytic converters
The purpose of the catalytic converters is to
purify exhaust gases. They are located close
to the engine so that operating temperature is
reached quickly.
The catalytic converters consist of a monolith
(ceramic or metal) with channels. The channel
walls are lined with a thin layer of platinum/
rhodium/palladium. These metals act as cata-
lysts, i.e. they participate in and accelerate a
chemical reaction without being used up
themselves.
Lambda-sond
TM
oxygen sensor
The Lambda-sond is part of a control system
intended to reduce emissions and improve
fuel economy. For more information, see Fuel
consumption and CO2 emissions (p. 403).
An oxygen sensor monitors the oxygen con-
tent of the exhaust gases leaving the engine.
This value is fed into an electronic system
that continuously controls the injectors. The
ratio of fuel to air directed to the engine is
continuously adjusted. These adjustments
create optimal conditions for efficient com-
bustion, and together with the three-way cat-
alytic converter reduce harmful emissions
(hydrocarbons, carbon monoxide and nitrous
oxides).
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