fuel pressure SAAB 9-3 2006 Owners Manual

4ExteriorAnti-corrosion treatment ___ 280
Body __________________ 279
Service program _________ 288
Sunroof ________________ 138
Touching up paintwork ____ 279
Washing _______________ 277
Waxing and polishing _____ 279Brake lights _____________ 240
Changing bulbs __________ 232
Light switches ___________ 102
Taillights _______________ 240Towing _________________ 205
Towing hook eyes ________ 205
Towing a trailer __________ 198Folding down the rear seat _ 146
Lighting ________________ 240
Load-through hatch _______ 148
Spare wheel ____________ 150
Tools __________________ 150
Trunk __________________ 146
Maximum loads _______________ 294
Mounting holes for roof carriers ___ 202
Roof load ____________________ 202
Hood _______________________ 214
Washing the engine bay_________ 277
Central locking __________ 50
Child safety locks ________ 54
Lock buttons ____________ 50
Trunk lock ______________ 53Changing bulbs _________ 232
Dipswitch ______________ 102
Direction indicators_______ 104
Front lights _____________ 234
Headlight levelling (xenon) _ 102
Headlight switches _______ 102
Headlight washers _______ 231Economical motoring _____ 193
Fuel filler door __________ 167
Fuel gauge _____________ 91
Fuel grade _____________ 299
Refueling ______________ 167
Braking _____________________ 180
Changing wheels ______________ 273
Spare wheel _________________ 270
Tire pressure ________________ 306
Tires _______________________ 256
Wheels _____________________ 304
Winter driving ________________ 195
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10
No sparks,
flames or
smokingBuckle up
Refer to
the Owner’s
ManualAirbag
Shield eyesNever place a
rear-facing
child seat in
this seat
Keep out of
reach of
childrenElectric
windows
Battery acid
contains sul-
phuric acidDeactivating
of rear window
switches
Risk of
explosive gasCentral
locking, lock
Central
locking,
unlock
Trunk lid,
opening
HeadlightsWindshield
wipers
Direction
indicatorsWindshield
washers
Parking lights Defroster
Hazard warn-
ing lightsRear window
heating
Front fog lights Cabin fan
Rear fog light
Coolant tem-
peratureRadiator fan
No charge to
batteryFuel
Foot brake
Coolant level
Engine oil
pressure
ABS brakes
Electronic
Stability
Program
Example of symbols that can be found in your car93U S M 06.book Page 10 Friday, February 18, 2005 1:15 PM
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85 Instruments and controls
This light will come on if the engine oil pres-
sure is too low. If the warning light flashes or
comes on while you are driving, stop imme-
diately in a safe place, switch off the engine
and check the oil level (see page 219).
The following message is shown on the
Saab Information Display (SID):This light indicates a malfunction in the fuel
or ignition system. The car may still be
driven with care but the performance of the
engine will be somewhat diminished (see
page 164).
The following message is shown on the
Saab Information Display (SID):
Warning, oil pressure
(engine oil)
NOTICE
Never drive the car when the oil pressure
warning lamp is on. Low oil pressure can
cause serious engine damage.
Oil pressure low.
Make a safe stop.
Turn off engine.
Engine malfunction
(CHECK ENGINE)
WARNING
An illuminated “Engine malfunction
(CHECK ENGINE)” indicator light indi-
cates an engine-related problem. While
your car may be able to be driven with the
“Engine malfunction (CHECK ENGINE)”
indicator light illuminated (limp-home
mode), you are advised to have your car
serviced at an authorized Saab dealer as
soon as possible.
Continued driving without this problem
being corrected might cause serious
further damage to your car and create
unsafe driving conditions. The operator
should be prepared to take action if such
unsafe conditions arise (e.g. brake
smoothly, engage neutral, stop in a suita-
ble place, switch off the engine, etc.)
Engine malfunction.
Contact Saab dealer.
NOTICEThe car should be checked immediately
at a Saab dealer to prevent more serious
faults from arising.
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88 Instruments and controlsThis light indicates that the headlights or
parking lights are on.
This light comes on when the system is
engaged.
This light comes on if the air pressure in one
or several of the tires drops (see page 254.
Autochecking of lights, main
instrument panelThe warning and indicator lights shown
above should come on when the ignition
switch is turned to ON. They should go out
after about 4 seconds once the engine has
started or after the fault-free self-diagnosis
of each system or function.
InstrumentsTachometerThe tachometer displays the engine speed
in thousands of revolutions per minute.
A protective function (interruption of the fuel
supply) limits the engine speed within the
red zone.
Headlight and parking
light indicator
Cruise control indicator
light
Automatic tire pressure
monitoring
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91 Instruments and controls
If the needle repeatedly enters the red zone
and the engine at the same time loses
power, because the monitoring system is
limiting the boost pressure, you should
contact a Saab dealer as soon as possible.
When the speed of the car exceeds
143 mph (230 km/h), acceleration is limited
by reducing the boost pressure. The pres-
sure gauge then moves towards the middle
of the white field, indicating a drop in engine
power and consequently the car’s speed.
Fuel gaugeWhen less than about 2.5 gallons (10 litre)
of fuel is left in the tank, a warning light on
the main instrument panel comes on.
Refueling, see page 167.
Information display,
main instrument panelUnder the speedometer is a display. The
information shown here varies depending
on whether the car has a manual transmis-
sion or automatic transmission.Cars with manual transmission: The odometer reading is shown on the
left-hand side of the display.
 Various information and faults are
displayed in the center of the display.
 The trip meter reading is shown on the
right-hand side of the display.
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164 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.
Limp-homeThe engine management system has a
diagnostic feature that checks a number of
internal functions. If a fault is detected in the
throttle valve, the engine management
system will set the throttle system to the
limp-home mode. This means:
 idling control will be poor (uneven idling
since regulated by ignition and fuel
supply)
 engine performance will be reduced
 the cruise control will not function
 the capacity of the A/C compressor will be
limited.NOTICE If 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
damage.
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189 Starting and driving
Long-term parkingIf the car is not going to be used for some
time, e.g. three to four months, the following
steps are recommended:
 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
(glycerine).
 After washing the car, dry the brake discs
to avoid corrosion by taking the car out on
the road and applying the brakes a few
times.
 Fill the fuel tank to prevent condensation
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 parking
brake OFF!
Convertible: If the car is stored, the soft
top should be closed.
 If necessary, use wheel chocks and leave
the parking brake off.
 Disconnect the negative (–) battery lead.
If frost is likely to occur during the storage
period, remove the battery and store it in
a frost-free place.
 If it is not possible to stand the car on axle
stands, increase the tire pressure to
43 psi (3 bar).
Leave all the door windows open a crack
and cover the car with a non-plastic
tarpaulin – not one made of plastic which will
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194 Starting and drivingengine wear is at its greatest during this
period. Drive off as soon as possible after
starting the engine and avoid high engine
speeds.
 Drive as smoothly and thoughtfully as
possible. Match your driving to the prevail-
ing traffic conditions.
 Driving in a low gear gives rise to higher
fuel consumption than driving in a high
gear because of the higher engine speed
for any given road speed. Always shift up
as soon as traffic conditions allow and
drive in the highest gear as much as
possible.
 Check the tire pressure once a month.
Incorrect tire pressure increases tire
wear. It is preferable for the tire pressure
to be slightly high than too low. Under-
pressure increases fuel consumption. Check the fuel consumption regularly.
Increased fuel consumption can indicate
that something is wrong and that the car
needs to be checked. We recommend
that you contact a Saab dealer.
Practical road tests have demonstrated that
substantial savings in fuel consumption can
be made if the above advice is followed.
Road conditionsWet roads increase fuel consumption, as do
unpaved roads and driving in hilly country
(the amount of fuel saved driving downhill is
less than the additional amount required to
climb the hill).
Engine block heater3The following are just some of the benefits
to the car and the environment of using an
engine block heater:
 Lower fuel consumption.
 Reduced wear on the engine.
 Inside of car warms up faster.
 Exhaust emissions substantially reduced
over short runs.
The engine heater is effective at outside
temperatures up to 60–70°F (+15–+20°C).
The warmer it is outside, the shorter the time
the engine heater needs to be connected.
Longer than 1.5 hours is unnecessary.
If the car is equipped with a removable,
electric cabin heater that is not in use, store
this in the trunk.
WARNING
Never switch off the engine while driving
as the effect of the brakes and power
steering will be greatly reduced.
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211 Starting and driving
For long tripsBefore starting off on a long journey, it is
advisable to have your car inspected by
your Saab dealer.
Obtain a few important items to take along
on your journey, such as spare bulbs, wiper
blades, fuses, a drive belt (poly-V-belt) and
the like.
You can check some points yourself before-
hand:
 Check that no oil or fuel leaks out of the
engine or gearbox/transmission.
 Check the coolant and power steering
fluid levels. Check also for leaks.
 Inspect the drive belt (poly-V-belt) and
replace if it shows any signs of wear.
 Check the battery charge.
 Check the tires for tread pattern and air
pressure, including the compact spare
tire.
 Take an extra remote control and keep it
separate.
 Check the brakes.
 Check all bulbs.
 Check for the presence of the tool kit and
jack in the car.93U S M 06.book Page 211 Friday, February 18, 2005 1:15 PM
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216 Car careSaab Trionic engine
management systemThe Saab Trionic engine management
system is a unique Saab development that
combines sequential multiport fuel injection,
electronic distributorless ignition and turbo-
charger boost pressure control into one sys-
tem.
The Trionic engine control module (ECM)
monitors many different engine parameters
such as:
 Intake manifold pressure.
 Intake air temperature.
 Crankshaft position.
 Engine coolant temperature.
 Throttle position.
 The oxygen content of the exhaust gases.
The ECM receives information regarding
engine knocking from a sophisticated feed-
back function in the ignition discharge unit.
By processing all of this information, the Tri-
onic system can control fuel injector open-
ing duration, ignition timing and turbo-
charger boost pressure to provide excellent
engine performance while maintaining low
emissions and fuel consumption.
ORVR (Onboard Refueling Vapor
Recovery)All hydrocarbons formed when refueling will
be recovered by the car and not released
into the atmosphere. The hydrocarbons are
absorbed in an evaporative emission canis-
ter. When the engine is subsequently
started, the evaporative emission canister is
gradually purged as air is sucked into it
through a shut-off valve. The hydrocar-
bon/air mixture passes through the evap
canister purge valve and into the engine
where it is burned. “Refueling”, see
page 167.
When refueling, make sure you screw the
filler cap on and keep turning until it has
clicked 3 times.
NOTICEThe Trionic engine management system
continuously monitors the operation of
these systems and has on-board diag-
nostic capabilities (OBD II). If the Engine
malfunction (CHECK ENGINE) light in
the main instrument illuminates, the
Trionic ECM has detected a problem. The
car will continue to operate, but perfor-
mance may be diminished. You should
have your car checked by a Saab dealer
as soon as possible.
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