2008 SAAB 9-3 octane

156 Starting and drivingImportant
considerations for
driving1 Starting and driving
Do not use full throttle until the engine
is warm, so as to avoid unnecessary
wear. If the needle of the turbo gauge
repeatedly enters the red zone, the
engine may suddenly lose power, due
to the initiation of a monitoring system
that limits the boost pressure. We
recommend that you contact a Saab
dealer as soon as possible.
Under certain barometric conditions
(high outside temperature and/or high
altitude) the needle may enter the first
part of the red zone without necessarily
indicating that a fault has arisen.
A protective function (interruption of the
fuel supply) limits the engine speed.2 Stopping the engine
Do not rev the engine immediately
before switching it off - stop the engine
when it is idling.
3 Regulating the boost pressure
One of the advantages of boost pres-
sure regulation is that the engine can
also be run safely on gasoline with a
lower octane rating, although not lower
than AON 87. However, engine perfor-
mance will fall slightly and heavy load-
ing and laboring should be avoided. For
optimum performance, use the recom-
mended grade of fuel.
The maximum boost pressure is regu-
lated according to the tendency of the
engine to knock. Short-lived knocking
is perfectly normal. This can occur
when the engine is running at about
3,000 rpm under a heavy load. The
extent of this knocking will depend on
the grade of fuel in the tank.
Isolated instances of knocking can
occur with low-octane fuel. This
controlled form of knocking, followed by
a reduction in the boost pressure, is a
sign that the control system is working
normally, and is perfectly safe for the
engine.The light comes on in the event of an engine
or gearbox fault (cars with automatic gear-
box), which may cause drivability problems
but that does not affect exhaust emission.
The car can still be driven but perhaps with
limited performance.
Contact a dealer whenever an opportunity
occurs. We recommend that you contact a
Saab dealer.
NOTEIf the engine sounds strange there is a
malfunction. We recommend that you
contact a Saab dealer immediately.
The use of fuel with too low an octane
rating can cause serious engine dam-
age.
Limited performance.
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159 Starting and driving
Refueling
WARNING
If you spill fuel and then something ignites
it, you could be badly burned. Fuel can
spray out on you if you open the fuel cap
too quickly. This spray can happen if your
tank is nearly full, and is more likely in hot
weather. Open the fuel cap slowly and
wait for any “hiss” noise to stop. Then
unscrew the cap all the way.
Gasoline fumes are highly explosive.
Therefore:
never smoke while refueling.
never use gasoline for any purpose
other than as engine fuel.
gasoline is extremely flammable and
can cause severe burns. No open or
exposed flames near gasoline.
do not use a mobile phone at the
same time as refueling.
If a fire starts while you are refueling, do
not remove the nozzle. Shut off the flow of
fuel by shutting off the pump or by notify-
ing the station attendant. Leave the area
immediately.
NOTEDo not overfill. Fuel should not come
right up the filler pipe as room for
expansion is needed for when the
temperature rises.
The use of fuel with too low an octane
rating can cause serious engine dam-
age.
Clean fuel from painted surfaces as
soon as possible.
NOTEThe engine control module (ECM) moni-
toring 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 83.
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 clicks.
Avoid driving with the fuel low level
indicator illuminated. The symbol illu-
minates when less than approximately
2.5 gallons (10 litres) of fuel remains
in the tank.
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161 Starting and driving
Refer to page 187 for information regarding
gasoline anti-freeze.
The fuel door has a built in filler cap holder
slot located on the fuel door. Slide the white
ring on the cap into the slot.
Notice: If you need a new fuel cap, be sure
to get the right type. Your dealer can get one
for you. If you get the wrong type, it may not
fit properly.
Filling a portable fuel container Fuel (Gasoline Engine)
Fuel
Use of the recommended fuel is an impor-
tant part of the proper maintenance of your
vehicle.
For optimum performance Saab recom-
mends:
Gasoline engines – AON 90.
Gasoline Octane
Use regular unleaded gasoline with a
posted octane of 87 or higher. If the octane
is less than 87, you may get a heavy knock-
ing noise when you drive. If this occurs, use
a gasoline rated at 87 octane or higher as
soon as possible. Otherwise, you might
damage your engine. A little pinging noise
when you accelerate or drive uphill is con-
sidered normal. This does not indicate a
problem exists or that a higher-octane fuel
is necessary. If you are using 87 octane or
higher-octane fuel and hear heavy knock-
ing, your engine needs service.
WARNING
Never fill a portable fuel container while it
is in your vehicle. Static electricity dis-
charge from the container can ignite the
gasoline vapor. You can be badly burned
and your vehicle damaged if this occurs.
To help avoid injury to you and others:
Dispense gasoline only into approved
containers.
Do not fill a container while it is inside
a vehicle, in a vehicle’s trunk, pickup
bed or on any surface other than the
ground.
Bring the fill nozzle in contact with the
inside of the fill opening before operat-
ing the nozzle. Contact should be
maintained until the filling is complete.
Do not smoke while pumping gaso-
line.
When refueling, hang the fuel cap inside
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162 Starting and drivingGasoline Specifications
It is recommended that gasoline meet spec-
ifications which were developed by automo-
bile manufacturers around the world and
contained in the World-Wide Fuel Charter
which is available from the Alliance of Auto-
mobile Manufacturers at www.autoalli-
ance.org/fuel_charter.htm. Gasoline meet-
ing these specifications could provide
improved driveability and emission control
system performance compared to other
gasoline.California Fuel
If your vehicle is certified to meet California
Emission Standards (see the underhood
emission control label), it is designed to
operate on fuels that meet California speci-
fications. If this fuel is not available in states
adopting California emissions standards,
your vehicle will operate satisfactorily on
fuels meeting federal specifications, but
emission control system performance may
be affected. The malfunction indicator lamp
may turn on and your vehicle may fail a
emission system inspection. See Engine
malfunction (CHECK ENGINE) on page 83.
If this occurs, return to your authorized Saab
dealer for diagnosis. If it is determined that
the condition is caused by the type of fuel
used, repairs may not be covered by your
warranty.Additives
To provide cleaner air, all gasolines in the
United States are now required to contain
additives that will help prevent engine and
fuel system deposits from forming, allowing
your emission control system to work prop-
erly. You should not have to add anything to
your fuel. However, some gasolines contain
only the minimum amount of additive
required to meet U.S. Environmental Pro-
tection Agency regulations. Saab recom-
mends that you buy gasolines that are
advertised to help keep fuel injectors and
intake valves clean. If your vehicle experi-
ences problems due to dirty injectors or
valves, try a different brand of gasoline.
Gasolines containing oxygenates, such as
ethers and ethanol, and reformulated gaso-
lines may be available in your area to con-
tribute to clean air. Saab recommends that
you use these gasolines, particularly if they
comply with the specifications described
earlier.
Notice: Your vehicle was not designed
for fuel that contains methanol. Do not
use fuel containing methanol. It can cor-
rode metal parts in your fuel system and
also damage the plastic and rubber
parts. That damage would not be cov-
ered under your warranty.
Some gasolines that are not reformulated
for low emissions may contain an
octane-enhancing additive called methylcy-
clopentadienyl manganese tricarbonyl
(MMT); ask the attendant where you buy NOTEGasolines containing oxygenates, such
as ethers and ethanol, and reformulated
gasolines may be available in your area.
We recommend that you use these gaso-
lines, if they comply with the specifica-
tions described earlier. However, E85
(85% ethanol) and other fuels containing
more than 10% ethanol must not be used
in vehicles that were not designed for
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291 Technical data
Fuel
EnginesElectrical systemFuel tank capacity 16.05 U.S. gal. (61 l)
For optimum performance Saab recom-
mends:Gasoline engines –
AON 90.
Gasoline with a lower octane rating can be used, although not
lower than AON 87. However, engine performance will fall slightly
and heavy loading and laboring should be avoided. For optimum
performance, use the recommended grade of fuel.
For further information on fuel, see page 161.
2.0T Ecopower
Rating, EEC at 5300 rpm ____________ 210 hp (155 kW)
Maximum torque, EEC at 2500-4000 rpm 221 ft.lb. (300 Nm)
Compression ratio__________________ 9.5:1
2.8 V6 Ecopower
Rating, EEC at 5500 rpm ____________ 255 hp (187 kW)
Maximum torque, EEC at 1800-4500 rpm 258 ft.lb. (350 Nm)
Compression ratio__________________ 10.0:1Voltage ___________________________ 12 V
Battery capacity ____________________ 60 Ah
Starter motor:
4-cyl engine ______________________ 1.8 kW
V6 engine ________________________ 1.4 kW
Alternator rating:
4-cyl engine with manual gearbox _____ 120 A/14 V
4-cyl engine with automatic gearbox ___ 140 A/14 V
V6 engine ________________________ 155 A/14 V
Firing order:
4-cyl engine ______________________ 1-3-4-2
V6 engine ________________________ 1-2-3-4-5-6
Spark plugs:
4-cyl engine
Type ____________________________ NGK PFR6T-10G
Electrode gap _____________________ 0.9–1.0 mm
Tightening torque __________________ 20 ft.lb. (28 Nm)
V6 engine
Type ____________________________ PLFR6C 10G
Electrode gap _____________________ 0.9–1.0 mm
Tightening torque __________________ 20 ft.lb. (28 Nm)93_US_M08.book Page 291 Friday, May 11, 2007 11:37 AM
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