2003 SAAB 9-3 fuel pressure

170 Starting and drivingFor 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
wheel.
 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.
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174 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 hydrocarbon/
air mixture passes through the evap canis-
ter purge valve and into the engine where it
is burned. "Refueling", see page 128.
When refueling, make sure you screw the
filler cap on and keep turning until it has
clicked 1 time. Otherwise, it is possible for
the Engine malfunction (CHECK ENGINE)
light to illuminate. The following message
will appear on the SID:
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.
Tighten fuel filler cap.
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207 Car care
Tire pressure
Note: Low tire pressure also causes prema-
ture tire wear and increased fuel consump-
tion.
Adjust the tire pressure to match the current
load and speed of the car (see page 245).
The stated tire pressures apply to cold tires,
i.e. tires that are the same temperature as
the outside air temperature. Tire pressure
increases as the tires become warm (e.g.
during highway driving) by approximately
0.3 bar (4 psi). When the temperature of the
tires changes by 50°F (10°C), the tire pres-
sure will change 0.1 bar (2 psi).
Never reduce the pressure of a hot tire. If the
tires are hot when you check them, only
increase the pressure, if necessary.
Soft tires will cause faster wear than over-
pressurized tires.
If a valve is leaking, simply unscrew it and fit
a new one.
Note: Remember to adjust the tire pressure
if you change the load in the car or intend to
cruise at a speed that is substantially differ-
ent from normal.
Automatic tire pressure monitoring(option, certain variants only)
The pressure monitoring system consists of
a sensor in each wheel, a detector in each
wheel housing and a receiver. The sensors
are located inside the wheels directly adja-
cent to the air valves.
WARNING
Check the tire pressure at least once a
month and before long journeys. Under-
inflation can result in:
 punctures
 separation of the tire and tread
 damage to the sidewalls
 damage to the rims on poor roads
 poor handling characteristics.
WARNING
The system is intended to aid the driver.
The driver is always ultimately responsi-
ble for ensuring that the tire pressure is
correct.NOTICEGreat care must be taken when changing
tires so as not to damage the sensors that
are integrated in the valves.
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226 Car careHeadlight aimingThe vehicle has a visual optical headlight
aiming system equipped with vertical
aiming device. The aim has been preset at
the factory and should normally not need
further adjustments.
If your headlights are damaged in a crash,
the headlight aim may be affected. If you
believe your headlights need to be re-
aimed, we recommend that you take it to
your Saab dealer for service. However, it is
possible for you to re-aim your headlights as
described in the following procedure.To check the aim, the vehicle should be
properly prepared as follows:
 The vehicle shall be placed so that the
headlights are 25 ft (7.6 m) from a light
colored wall or other flat surface. The
aiming area should be darkened, this will
improve your ability to see the beam of the
low beam headlight being aimed.
An optical headlamp aimer can also be
used and will than replace the wall.
 The vehicle must have all four wheels on
a perfectly level surface which is level all
the way to the wall or other flat surface.
 The vehicle should be placed so it is per-
pendicular to the wall or other flat surface.
 The vehicle should be unloaded and fuel
tank full, and one person or 160 lbs.
(75 kg) on the drivers seat.  The vehicle should be fully assembled
and all other work stopped while headlight
aiming is being done.
 The vehicle should not have any snow, ice
or mud attached to it.
 Tires should be inflated to the prescribed
pressure.
 Close all doors.
 Rock the vehicle to stabilize the suspen-
sion.
Headlight aiming is done with the vehicle
low beam lamps. The high beam lamps will
be correctly aimed if the low beam lamps
are aimed properly.
WARNING
Before checking/adjusting the headlight
aiming, switch off the engine to avoid
danger of fingers and hands being injured
by moving parts.
The radiator fan can start up even when
the engine is switched off.NOTICETo make sure that your headlights are
aimed properly read all instructions
before beginning. Failure to follow these
instructions could cause damage to
headlight parts or a not correctly aimed
headlight.
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237 Technical data
Curb weight
(i.e. with full fuel tank, full washer fluid res-
ervoir, standard tools and spare wheel) _3174–3461 lbs.
(1440–1570 kg)
Gross vehicle weight (GVW) ___________ 4343–4453 lbs.
(1970–2020 kg)
Maximum axle load:
Front ____________________________ 248 lbs. (1125 kg)
Rear ____________________________ 2226 lbs. (1010 kg)
Weight distribution:
Curb weight + driver (154 lbs. (70 kg)),
front/rear _________________________ approx. 60/40 %
GVW, front/rear ____________________ approx. 50/50 %
Maximum roof load _________________ 220 lbs. (100 kg)
Maximun load in trunk ______________ 175 lbs. (80 kg)
WARNING
 The GVW and maximum axle loads must not be exceeded.
Note that if some accessories (e.g. towbar, CD changer) are
fitted, the available load capacity is reduced by the weight of
these.
 When carrying a load in the trunk, make sure that it is lashed
down securely, particularly when part or all of the rear seat is
folded down.
Trailer:
Trailer with brakes ___________________ Max. 3500 lbs.
(1588 kg)
Trailer without brakes ________________ Max. 1000 lbs.
(450 kg)
Recommended towball load ___________ 110–165 lbs.
(50–75 kg)
Maximum theoretical towing speed, trailer
with brakes _______________________ 60 mph (100 km/h)
When towing a trailer, increase the pressure
of the rear tires by 0.2 bar (3 psi).
The above speed and weight restrictions are those specified by
Saab Automobile AB.
Note that national restrictions may apply to trailer speeds and
weights (see page 157).
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249 Technical data
Warning and indications that can be
shown on the SIDSymbol Text
Antilock brake malfunction.
Contact Saab dealer.
Brake malfunction.
Make a safe stop.
Contact Saab dealer.
Brake fluid level low.
Make a safe stop.
Contact Saab dealer.
Release park brake.
Oil pressure low.
Make a safe stop.
Turn off engine.
Low engine oil level.
Fill oil now.
Engine malfunction.
Contact Saab dealer.
Reduced engine power.
Contact Saab dealer.
Coolant level low.
Refill.
Hot engine.
Make a safe stop.
Run engine on idle.
Airbag malfunction.
Contact Saab dealer.
Use your seatbelt.
Gearbox malfunction.
Limited performance.
Contact Saab dealer.
Gearbox too hot.
Make a safe stop.
Open hood to cool down.
Battery not charging.
Make a safe stop.
Contact Saab dealer.
A/C off due to high engine
temperature.
Headlight levelling
malfunction.
Contact Saab dealer.
Tap brakes lightly before
using cruise control.
Traction control failure.
Contact Saab dealer.
Stability control failure.
Contact Saab dealer.
Washer fluid level low.
Refill.
Key not accepted.
Contact Saab dealer.
Remote control battery low.
Replace battery.
X: standard key
Y: va l e t key
Key No: Z
Lock system failure.
Contact Saab dealer.
Steering lock malfunc.
Make a safe stop.
Contact Saab dealer.
Steering wheel locked.
Pull out key, turn steering
wheel. Try again.
Immobilizer failure.
Try starting again.
Contact Saab dealer.
Theft protection failure.
Contact Saab dealer.
Alarm has been triggered
since being armed.
Tighten fuel filler cap.
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253 Index
LLATCH (child safety)
_____________ 22
Labels and plates, location
_______ 246
Lashing eyes
__________________ 118
Laying the car up
______________ 150
Leather upholstery, cleaning
______ 218
Limp-home
___________________ 126
Limp-home, automatic transmission
137
Load carriers, roof
______________ 161
Load indices, tyres _____________ 209
Load-through hatch _____________ 117
Locking a car with flat battery
______ 41
Locks
________________________ 38
Long-term parking
______________ 150
Luggage compartment
__________ 116
Luggage compartment lighting
106
, 119
Luggage compartment lighting,
changing
____________________ 197
MMAXI fuses
___________________ 200
Main instrument panel
___________ 54
Main/dipped beam
______________ 72
Maintenance schedule __________ 230
Manual climate control ___________ 79
Manual gear selection ___________ 139
Manual gearbox
_______________ 133
Manual tripping of car alarm
_______ 49
Materials used in the car, reclamation
222Memory, driver’s seat
____________ 19
Milometer
_____________________ 59
Movement sensor, car alarm
______ 48
Mug holder
___________________ 107
NNight driving
__________________ 163
Number plate lighting, changing
___ 196
OORVR
_______________________ 174
Oil capacity, engine
_____________ 239
Opening handles
________________ 38
Opening the fuel filler flap manually
_52
Owner assistance
______________ 232
PPanic function, car alarm
_________ 49
Park Brake Shift Lock
___________ 135
Park Brake Shift Lock,
temporary override
____________ 137
Parking
______________________ 148
Parking aid ___________________ 151
Parking brake _________________ 148
Parking on a hill _______________ 149
Pinch protection, electric windows
_100
Pinch protection, sunroof
________ 104Plates and labels, location
________ 246
Polishing and waxing
____________ 219
Poly-V-belt
____________________ 185
Position lights __________________ 72
Power steering fluid, checking
_____ 181
Power steering fluid, grade
_______ 242
Pressure gauge
_________________ 61
Profiles, customized settings
_______ 64
Puncture, changing wheels _______ 214
QQuick guide, remote control
_______ 39
RRain sensor
____________________ 77
Rear fog light ___________________ 74
Rear seats, folding down
_________ 116
Rear towing eye
_______________ 165
Rear window heating
_____________ 83
Rearview mirrors
_______________ 110
Recirculation
___________________ 82
Recommendations for automatic
transmission, towing a trailer
____ 158
Recommendations for manual
gearbox, towing a trailer
________ 159
Recommended fuel grades _______ 128
Recommended snow chains ______ 243
Refueling
_____________________ 128
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