fuel SAAB 9-3 2002 Owner's Manual

150 Starting and driving
Important considerations with cata-
lytic convertersThe catalytic converter is an emission-con-
trol device incorporated in the car’s exhaust
system. It consists of a metal canister with a
honeycomb insert, the cells of which have
walls coated in a catalytic layer (mixture of
precious metals).
To ensure that the catalytic converter con-
tinues to function properly, and also to avoid
damage to the converter and its associated
components, the following points must be
observed:
 Have the car serviced regularly in accor-
dance with the service program. The fuel
and ignition systems are particularly
important in this context.
 Always be alert to any misfiring of the
engine (not running on all cylinders) and
any loss of power or performance. At the
first sign of a malfunction, reduce speed
and take the car to an authorized Saab
dealer as soon as possible. If the engine fails to start (in very cold
weather or if the battery is dead), the car
can be push started (manual gearbox
only) or started using jumper cables to a
donor battery. However, as soon as you
have started the engine, it is important
that it runs on all cylinders. If it is misfiring,
allow it to idle for up to five minutes to give
it time to settle and run smoothly. If, after
this time, the engine still fails to run prop-
erly, turn off the engine and get in touch
with an authorized Saab dealer for
advice.
NOTEIf the CHECK ENGINE warning light
starts to flash, ease off the accelerator
slightly. If the light does not cease to flash
within 5 seconds, stop the car in a suita-
ble place as soon as possible and turn off
the engine. The car must be towed to an
authorized Saab dealer.
If the CHECK ENGINE warning light
flashes, it indicates that the engine is
misfiring which can result in damage to
the catalytic converter.
NOTEUse only unleaded gasoline. Leaded gas-
oline is detrimental to the catalyst and
oxygen sensor and will seriously impair
the function of the catalytic converter.
IB1315
Engine-management system with catalytic
converter 1 Engine control module
2 Oxygen sensor (lambda probe)
3 Catalytic converter
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151 Starting and driving
 Never park the car on dry grass or other
combustible material. The catalytic con-
verter gets very hot and could therefore
start a fire.
 Never drive off if the engine is misfiring.
 If you jump start the car when the engine
is already up to normal temperature, the
engine must start to run on all cylinders.
Stop jump-starting if the engine fails to
start immediately.
 Failure to follow these directions could
result in the catalytic converter and asso-
ciated components being damaged, and
could represent a breach of the warranty
conditions.
RefuelingOnly fuel from well-known oil companies
should be used.
All Saab gasoline engines can be driven on
fuel of grade AON 87-93.
For optimum performance we recommend:
AO N 90 for 2.0 Turbo 185 hp.
AO N 93 for 2.0 Turbo 205 hp and
2.3 Turbo Viggen.
If fuel containing a mixture of alcohol is
used, the following restrictions apply:
Methanol: max. 5% by volume.
Ethanol: max. 10% by volume.
MTBE: max. 15% by volume.The fuel filler cap is located in the right rear
quarter panel.
Switch off engine.
Insert the fuel-pump nozzle beyond the
flange on the filler pipe. Do not withdraw the
nozzle while filling is in progress.
Cease refueling the first time the pump
stops.
Fuel-tank capacity: 17.0 US gal. (64 liters)
Screw on the filler cap and keep turning until
it has clicked at least three times to prevent
illumination of the CHECK ENGINE light
and a TIGHTEN FUEL FILLER CAP mes-
sage to appear on SID.
Manually opening the fuel filler door, see
page 144, Convertible, page 58.
The most effective way to prevent conden-
sation forming in the tank (and thus avoid
possible running problems) is to keep the
tank full.
Before the onset of freezing temperatures in
winter, it may be advisable to add gasoline
anti-freeze to the fuel a few times to dispel
any condensation in the system.
NOTEIf the car runs out of fuel, it is possible for
air to get into the fuel system. If this
happens, the catalytic converter may
overheat and be damaged.
WARNING
 Never use fuel for any purpose other
than as engine fuel.
 Gasoline is highly flammable and can
cause severe burns. Never use an
exposed flame in the vicinity of gaso-
line. Never smoke when filling the
vehicle up with gasoline.
 Do not use the phone when refueling
with gasoline. Gasoline fuels are
highly explosive.
NOTEDo not overfill. Fuel should not come right
up the filler pipe as expansion room is
needed.
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152 Starting and driving
Recommended fuel:For optimum performance we recommend:
 AON 90 for 2.0 Turbo 185 hp engines.
 AON 93 for 2.0 Turbo 205 hp engines and
2.3 Viggen.
Octane rating is determined according to
the formula:
where MON is the Motor Octane Number,
and RON is the Research Octane Number.
The average of these two values is the
octane rating of the gasoline as it appears
on the pump at a retail gas station. This
value is sometimes referred to as the
"Anti-Knock Index" (AKI) or the "Average
Octane Number" (AON).To avoid deposit formation on the fuel injec-
tors which can cause poor driveability, use
only quality gasolines that contain deter-
gents and corrosion inhibitors. Because
gasolines sold at retail gas stations vary in
their composition and quality, you should
switch to a different brand if you begin expe-
riencing driveability and/or hard starting
problems shortly after refueling your car. In
recent years, a variety of fuel additives and
alcohols or oxygenates have been blended
with gasoline. These types of gasolines may
be found in all parts of the United States and
Canada, but particularly in geographic
areas and cities that have high carbon mon-
oxide levels. Saab approves the use of such
"reformulated" gasolines in its products,
which help in reducing pollution from all
motor vehicles, provided that the following
blending percentages are met by such
fuels:
 Up to 10% ethanol by volume, with corro-
sion inhibitors.
 Up to 15% MTBE by volume (methyl ter-
tiary butyl ether).
 Up to 5% methanol by volume, with an
equal amount of a suitable co-solvent and
added corrosion inhibitors.
NOTE Fill to maximum filling capacity
 Stop filling after the first time that the
nozzle trips to shut off the flow of fuel
 Filling capacity can differ between
different fuel stations and outside
temperature. Fuel tank volume when
nozzle trips to shut off, may vary by
0.5 gal. (2 liters).
 Do not fill fuel all the way up the filler
pipe. The gasoline must be allowed
room for expansion especially during
hot weather.
MON + RON
2
IB1891
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153 Starting and driving
Other, less common, fuel additives used by
some gasoline dealers are also acceptable,
provided that the resultant gasoline is not
more than 2.7% oxygen by weight. In many
cases, you may not be able to determine the
exact type or percentage by volume of fuel
additive in the gasoline you purchase for
your car.
Some Canadian and U.S. gasolines contain
an octane enhancing additive called meth-
lycyclopentadienyl manganese tricarbonyl
(MMT). If such fuel is used, your emission
control system performance may deterio-
rate and the malfunction indicator lamp on
your instrument panel may turn on. If this
occurs, return to your authorized Saab
dealer for service.
However, these blended gasolines are reg-
ulated and should never exceed these rec-
ommended blend percentages and service
station operators should know if their gaso-
lines contain detergents and oxygenates,
and have been reformulated to reduce vehi-
cle emissions. Nevertheless, if you begin to
notice a problem with the way your car starts
or runs shortly after it has been refueled, try
a different brand of gasoline.
NOTEHigher concentrations of methanol than
listed above, or the use of methanol-
blended gasoline without suitable
co-solvents and corrosion inhibitors,
can damage your car’s fuel system,
leading to the need for repairs which are
not covered by Saab’s product warranty.
NOTEThe engine control module (ECM) mon-
itoring the engine parameters also
stores fault codes.
Under certain circumstances, this may
cause constant illumination of the
Engine malfunction (CHECK ENGINE)
lamp , thus indicating a fault that
must be checked by your Saab dealer,
see page 63.
NOTE: always observe the following two
measures:
 Make sure that the fuel filler cap is
screwed on correctly before the
engine is started. Screw on the fuel
filler cap until you hear three distinct
clicks.
 Avoid driving with the fuel low level
indicator illuminated. The symbol
illuminates when less than approxi-
mately 2.5 gallons (10 litres) of fuel
remains in the tank.
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154 Starting and drivingFuel (Gasoline Engine)Use regular unleaded gasoline rated at 87
octane or higher. It is recommended that the
gasoline meet specifications which were
developed by the American Automobile
Manufacturers Association (AAMA) and
endorsed by the Canadian Motor Vehicle
Manufacturers Association for better vehi-
cle performance and engine protection.
Gasolines meeting the AAMA specification
could provide improved driveability and
emission control system performance com-
pared to other gasolines.Canada Only
Be sure the posted octane is at least 87. If
the octane is less than 87, you may get a
heavy knocking noise when you drive. If it’s
bad enough, it can damage your engine. If
you’re using fuel rated at 87 octane or
higher and you hear heavy knocking, your
engine needs service. But don’t worry if you
hear a little pinging noise when you’re accel-
erating or driving up a hill. That’s normal,
and you don’t have to buy a higher octane
fuel to get rid of pinging. It’s the heavy, con-
stant knock that means you have a problem.
If your vehicle is certified to meet California
Emission Standards (indicated on the
underhood emission control label), it is
designed to operate on fuels that meet Cal-
ifornia specifications. If such fuels are not
available in states adopting California emis-
sions standards, your vehicle will operate
satisfactorily on fuels meeting federal spec-
ifications, but emission control system per-
formance may be affected. The malfunction
indicator lamp on your instrument panel
may turn on and/or your vehicle may fail a
smog-check test. See "Malfunction Indica-
tor Lamp" in the Index. If this occurs, return
to your authorized Saab dealer for diagno-
sis to determine the cause of failure. In the
event it is determined that the cause of the
condition is the type of fuels used, repairs
may not be covered by your warranty. Some gasolines that are not reformulated
for low emissions may contain an
octane-enhancing additive called methylcy-
clopentadienyl manganese tricarbonyl
(MMT); ask your service station operator
whether or not the fuel contains MMT. Saab
does not recommend the use of such gaso-
lines. If fuels containing MMT are used,
spark plug life may be reduced and your
emission control system performance may
be affected. The Engine malfunction
(CHECK ENGINE) light on your instrument
panel may turn on. If this occurs, return to
your authorized Saab dealer for service.
In Canada, look for the
"Auto Makers’ Choice" label
on the fuel pump.
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155 Starting and driving
Engine Break-in PeriodPistons, cylinder bores and bearings need
time to obtain uniform, wear-resistant sur-
faces.
If a new engine is driven too hard, this grad-
ual process of bedding-in will not be possi-
ble and the life of the engine will be short-
ened.
During the first 1,200 miles (2,000 km), do
not exceed 5,000 rpm.
In addition, refrain from driving the car at full
throttle, other than for brief instances,
during the first 1,800 miles (3,000 km).Wearing in new brake padsNew brake pads take time to bed in, about
90 miles (150 km) if the car is driven largely
under stop-and-go conditions or about
300 miles (500 km) of highway driving.
To extend the useful life of the pads, avoid
hard braking as much as possible.
Manual transmissionTo start the engine the clutch pedal must
be fully depressed.
The gear positions are marked on the gear
lever. Before reverse (R) can be engaged,
you must lift the ring underneath the
gear-lever knob.
To change gear, fully depress the clutch
pedal and then release it smoothly. It is
inadvisable to drive with your hand resting
on the gear lever, as this can increase the
wear on the gearbox.
When shifting down from 5th to 4th gear,
ease the gear lever straight back, without
applying any lateral pressure. This will pre-
vent 2nd gear being engaged by mistake,
which can result in overreving and possible
damage to the engine.
Shift-up indicator for improved fuel
economy
(U.S. models only except Viggen)Cars equipped with a manual transmission
have a "Shift-up" light on the instrument
panel. The light begins to work after the
vehicle is warmed up and provides you with
a good indication when to shift to a higher
gear.
It is not necessary or recommended to
follow the shift-up recommendations in all
driving conditions, for example, when driv-
ing in heavy urban traffic or steep downhill
grades.
However, shifting with the light should result
in improved fuel economy. Therefore, for
reduced fuel consumption and better
energy conservation, you should make a
habit of shifting before or when the shift-up
light comes on.
NOTEWhen the reverse gear is to be engaged
the car must be at a standstill with the
accelerator fully released. Lift the reverse
lock-out collar and push the gear lever
firmly to the right in neutral before easing
it into reverse.
IB864
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157 Starting and driving
The detent button on the selector lever has
to be pressed before the selector can be
moved between certain positions.
Three modes for the automatic transmis-
sion can be selected: Normal, Sport and
Winter.
The Normal mode, which provides the best
fuel economy, is the default setting when
the engine is started.
Sport mode alters the angle of the throttle
valve for increased power compared to the
same accelerator position in Normal mode.
This means gear changes are made to opti-
mize the car’s performance. The SPORT
indicator light is shown on the main instru-
ment panel; see page 162). The Winter mode is intended for use when
pulling away and driving on icy roads. In this
mode, the transmission starts in 3rd gear, to
provide better grip, and the WINTER indica-
tor appears on the main instrument panel.
When the ignition is turned to OFF, the auto-
matic transmission will automatically revert
to Normal mode (see page 162).Adaptive gear change pattern is a func-
tion of the Normal and Sport modes. It
allows gear changing to be suited to the pre-
vailing driving conditions. The transmission
control module senses the engine load and
temperature of the transmission and selects
one of the four available gear change pat-
terns. Unnecessary gear changes and
undesired temperature increases in the
transmission are avoided.
IB1280
Indication of gear position on the main
instrument panel
PRND
3
2
1
IB866
Detent positions for selector movement
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158 Starting and drivingLock-up functionThe automatic transmission has a lock-up
function, which renders the torque con-
verter inoperative in 3rd and 4th gears. The
result is reduction in the engine speed and,
hence, fuel consumption.
When the lock-up function comes into oper-
ation, it may give the impression of an over-
drive being engaged.Kick-downWhen the accelerator is pressed down hard,
a downshift to the next lower gear will occur
to provide maximum acceleration, e.g. for
overtaking.
The change-up to the next gear again will
take place either when the accelerator is
released or when maximum engine speed
for that gear is reached.
Park Brake Shift LockThe transmission has a safety function
called Park Brake Shift Lock. For the selec-
tor lever to be moved out of the P position,
the brake pedal must be depressed at the
same time as the detent button is lifted.
Park Brake Shift Lock override
1 Apply the parking brake.
2 Make sure the key is in the ON position.
3 Use a small tool such as a screwdriver
and push the lever downwards so that
the detent button can be pressed
approx. 10 mm.
4 Move the selector out of position P to N.
5 Remove the tool.
6 Release the parking brake if the car is to
be moved immediately; otherwise keep
it applied.Check fuse No. 12 (see page 208). If the
fuse is OK, check the battery voltage.
If the problem was cured by changing the
fuse or battery, you do not have to contact a
Saab dealer.
If the fuse blows again as soon as the Shift
Lock feature is activated you should contact
your Saab dealer.NOTEIf a problem arises with the shift lock
mechanism, it may not be possible to
move the selector out of the park position,
even if the ignition is ON. If for some
reason the selector has to be moved out
of the park position (i.e. to tow the car a
short distance) do as described below.
IB947
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169 Starting and driving
Parking on a hillWhen parking on a steep hill, turn the front
wheels so that they will be blocked by the
curb if the car should move.
Long-term parkingIf the car is not going to be used for some
time, e.g. 3–4 months, the following steps
are recommended:
 Run the engine to normal temperature
before long-term parking.
 Drain the washer-fluid reservoir and
hoses.  Wash and wax the car. Clean the rubber
seals on the hood, trunk lid and doors,
and lubricate them with glycerol (glyc-
erin).
 After washing the car, dry the brake discs
by taking the car out on the road and
applying the brakes a few times. If the traf-
fic conditions allow, brake quite heavily
just before parking.
 Fill the fuel tank with fuel to prevent con-
densation forming in it.
 Top up the coolant and check the anti-
freeze before the onset of winter.
 Park the car in a dry, covered and
well-ventilated building. Leave the park-
ing brake OFF!
 Disconnect the negative (-) battery lead.
If freezing temperatures are likely to occur
during the long-term parking, remove the
battery and store it away from freezing
temperatures.
 Ideally, the car should be put up on
blocks, with the wheels off the ground. If
this is not possible, inflate the tires to
about 43 psi (300 kPa).
 Leave all the windows open a crack and
cover the car with a fabric tarpaulin - not
one made of plastic which will not breath.
IB879
1Pointing downhill and
against the curb
– Turn the wheels into the
curb and edge the car for-
ward until the wheels touch
the curb. 2Pointing uphill and
against the curb
– Turn the wheels away
from the curb and edge the
car back until the wheels
touch the curb. 3Pointing uphill or down-
hill – no curb
– Turn the wheels towards
the edge of the road. If the
car should start rolling, it
will not run into the road.
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170 Starting and drivingEconomical motoringFactors affecting fuel consumption Fuel consumption is greatly affected by the
general driving conditions, the way in which
the car is driven and at what speeds, the
weather, the state of the road, the condition
of the car, etc. Breaking-in Fuel consumption may be somewhat higher
during the break-in period (the first 3,000–
4,000 miles (5,000–7,000 km). Weather conditionsFuel consumption can be as much as 10 %
lower in summer than in winter. The higher
consumption in cold weather is explained by
the longer time it takes for the engine to
reach normal operating temperature, and
for the transmission and wheel bearings to
warm up. Fuel economy is also affected by
the distance driven: short journeys of
3-5 miles (5-8 km) do not give the engine
enough time to reach normal temperature.
Strong winds can also affect fuel consump-
tion. How to read the graph:
If fuel consumption with the engine at
normal temperature is 28 mpg
(10l/100 km), the actual fuel consumption 3
miles (5 km) after the engine has started
from cold will be:
– 23.5 mpg (12l/100 km) at outside temp.
of 68°F (20°C) (increase of 20%)
– 17.7 mpg (16l/100 km) at outside temp.
of 32°F (0°C) (increase of 60%)
– 14 mpg (20l/100 km)) at outside temp. of
–4°F (–20°C) (increase of 100%)
As can be seen, both the distance travelled
by the car and the outside temperature have
a major impact on fuel consumption after the engine has started from cold. Thus, if the
car is mainly used for short journeys of
3–5 miles (5–8 km), the fuel consumption
will be 60–80 % higher than normal.
Driving technique To obtain the best running economy, not
only regarding fuel consumption but gen-
eral wear also, regular service is required.
 High speed, unnecessary acceleration,
heavy braking and much low gear work all
gives rise to higher fuel consumption.
 Frequent gear changing in traffic, starting
in cold weather, the use of studded tires
and roof racks, and towing a trailer all
increase fuel consumption.
 Do not run the engine when the car is sta-
tionary.
If idling, it will take much longer before the
engine becomes hot. Engine wear is
greatest during this warming-up phase.
Therefore drive away as soon as possible
after the engine is started and avoid high
revving.
WARNING
Never switch the engine off while driving
as the effect of the brakes and power
steering will be greatly reduced.
IB311
Percentage increase in fuel consumption
of engine starting from cold compared to
engine at normal temperature
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