engine SAAB 9-3 2003 Repair Manual

163 Starting and driving
Driving with the trunk lid
openAvoid driving with the trunk lid partly or fully
open, since exhaust fumes can be drawn
into the cabin.
If you must drive with the trunk lid open,
close all windows and the sunroof (if fitted)
and set the cabin fan to its highest speed
setting.
Driving in deep water Driving at night
Bear in mind the following points, especially
when driving at night:
 Nighttime driving requires your full
concentration
 Do not rush. Count on your journey taking
slightly longer.
 The number of drivers under the influence
of drugs is likely to be greater at night than
during the day.
 Do not stare at the headlights of oncom-
ing vehicles.
 Avoid driving at night if you have poor
eyesight. Night vision deteriorates with
age.
 Keep your car’s headlights, windows and
mirrors clean. Also, if you wear glasses,
make sure they are clean.
 Make sure you are well rested before
starting a long journey. Take a break
every other hour.
 Only eat light meals. Heavy meals have a
tendency to induce tiredness.
 Wild animals prefer to move at dusk and
dawn.
 Check the headlight levelling setting (see
page 73).
NOTICEDo not drive in puddles or water deeper
than 7 in. (20 cm) and do not drive faster
than at idling speed. Water can otherwise
be sucked into the engine. The engine will
be damaged if water enters the intake
system.
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164 Starting and drivingTowing the car
Front towing eyeThe front towing eye is stowed by the spare
wheel. On the left-hand side of the bumper
is a cover concealing the attachment point
(tapped hole) for the towing eye.
1 Press the knob on the upper section of
this cover to open it.
2 Screw in the towing eye. The towing
eye has a left-hand thread!
3 Insert the wheel wrench into the eye to
tighten it properly.
WARNING
 Remember that the brake servo does
not operate when the engine is off.
Much greater pressure than normal
will therefore be required to operate
the brake pedal.
 Nor does the steering servo operate
when the engine is off. The steering
will therefore be much heavier than
usual.
 The towing vehicle should always be
heavier than the vehicle on tow.
 Never allow passengers to ride in the
car when it is on tow.
 Always seek professional help if the
car needs to be recovered.
 The ignition switch must be in the ON
position if the car is moved with the
engine not running.
 The steering wheel lock disengages
when the remote control is inserted
into the ignition switch, if the battery
has sufficient charge.
WARNING
 Make sure that the towing eye is
screwed in tightly. It has a left-hand
thread!
 The towing eye is only designed for
towing the car on roads. It must not
be used to pull the car out of a ditch,
for example.
 Make sure that all bystanders keep a
suitable distance, in case the towing
eye or tow rope should snap. The
towing eye or tow rope could catapult
off and cause seriously injury.
 Never drive with the towing eye fitted
to the front bumper. Return it to its
designated storage space.
Front towing eye fitted.
The towing eye has a left-hand thread!
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165 Starting and driving
Rear towing eyeThe car has a permanent towing eye at the
rear under the bumper.
If the car is equipped with a towbar, this can
be used instead of the towing eye.
Towing the carEngage neutral (automatic transmission:
move the selector lever to N). Turn on the
parking lights.
Engage neutral (automatic transmission:
move the selector lever to N). Turn on the
hazard warning lights.
Drive carefully and do not exceed the
speed limit for vehicles on tow.Always try to keep the towrope taut by
gently applying the brake of the car on tow,
as necessary. This will avoid the towrope
being jerked violently.
Cars with automatic transmission:
Always observe the speed limit for vehicles
on tow. Whatever the speed limit, the car
must not be towed at speeds exceeding
30 mph (50 km/h) nor for a distance of more
than 30 miles (50 km). If the car needs to be
transported over a longer distance, a tow
truck or flatbed truck must be called out.
The engine cannot be started by towing or
pushing the car. In an emergency, the
engine can be started as described under
"Jump starting" on page 168.NOTICENever use the towing eyes to pull the car
unstuck.
NOTICE The car must be towed front first.
 If the car is to be towed with the front
wheels off the ground, make sure the
parking brake is off, as this acts on the
rear wheels.
Rear towing eye
Never use the towing eyes to pull the car
unstuck.
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169 Starting and driving
3 Turn off the ignition on both vehicles.
Turn off all lights that are not needed,
and radios. This will avoid sparks and
help save both batteries and it could
save your radio.
4 Open the hood and locate the battery.
Find the positive (+) and negative (–) termi-
nals on the battery.
5 Check that the jumper cables do not
have loose or missing insulation. If they
do, you could get a shock and also the
vehicles could be damaged.
Before you connect the cables, here are
some basic things you should know.
Positive (+) will go to positive (+) and
negative (–) will go to negative (–). Do
not connect (+) to (–) or you will get a
short that could injure you or would
damage the battery and maybe other
parts as well.
6 Connect the red positive (+) cable to the
positive (+) terminal of the vehicle with
the discharged battery.7 Do not let the other end touch metal.
Connect it to the positive (+) terminal of
the good battery. Use a remote positive
(+) terminal if the vehicle has one.
8 Now connect the negative (–) cable to
the good battery’s negative terminal.
9 Attach the cable to the discharged
battery’s negative terminal.
10 Start the vehicle with the good battery
and run the engine for a while.
11 Try to start the vehicle with the
discharged battery. If it does not start
after a few tries, it probably needs
service.
12 Remove the cables in reverse order to
prevent electrical shorting. Take care
that they do not touch each other or any
other metal.NOTICEIf you leave your radio on, it could be
badly damaged. The repairs would not be
covered by your warranty.
WARNING
An electric fan can start up even when the
engine is not running and can injure you.
Keep hands, clothing and tools away from
any underhood electric fan.
WARNING
Using a match or flame of any kind near a
battery can cause battery gas to explode.
You can suffer burns or be blinded. Use a
flashlight if you need more light.
Be sure the electrolyte in the battery is not
frozen. Discharged batteries will freeze.
When connecting jumper cables to a
frozen battery, gas from the chemical
reaction inside the battery can build up
under the ice and cause an explosion.
Battery fluid contains acid that can burn
you. Do not get it on you. If you acciden-
tally get it in your eyes or on your skin,
flush the area with water and get medical
help immediately.
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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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171 Car care
Hood ________________ 172
Engine ______________ 173
Engine bay ___________ 175
Engine oil ____________ 176
Air filter______________ 178
Transmission fluid ____ 178
Coolant ______________ 179
Brake/clutch fluid and
brake pads__________ 180
Power steering________ 181
Battery ______________ 182
Drive belt ____________ 185
Wipers and washers ___ 186
Wiper blades _________ 186
Changing bulbs _______ 188 Fuses ________________ 199
Wheels _______________ 206
Compact spare wheel ___ 212
Changing a wheel ______ 214
Safety belts ___________ 217
Upholstery and trim ____ 217
Textile carpeting _______ 218
Engine bay ____________ 218
Washing ______________ 218
Waxing and polishing ___ 219
Touching up the paint___ 219
Anti-corrosion treatment 220
Recovery and/or
recycling of automotive
materials ____________ 222
Air conditioning (A/C) ___ 224
Car care
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172 Car careHoodThe handle of the hood lock is located on the
left under the instrument panel. Open the
hood in the following way:
1 Pull the release handle.
2 The hood moves to the half-locked posi-
tion and is stopped by a safety catch at
the front edge.
3 Press the lever of the catch upwards and
raise the hood.
When you close the hood you should drop it
from a height of about 8 inches (20 cm),
without slamming it.
To provide better access to the engine bay,
the hood can be opened further. Lift the
hood towards the windshield once it has
been opened as described above.
Hood release catch plate
Hood release handle
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173 Car care
EngineThe engine is a transverse four-cylinder in-
line engine with twin overhead camshafts
and 16 valves.
The engine is equipped with two balance-
shafts that reduce engine vibrations to a
minimum.
The balance shafts are chain-driven and
rotate at twice the speed of the crankshaft.
They produce forces and torques that are
opposed to those generated by the pistons
and connecting rods. The effect occurs
twice in each revolution of the engine, coun-
teracting the vibration from its moving parts,
and at the same time reducing unwanted
engine noise.
The gearbox, located on the right (viewed
from the front), is integrated with the engine.
Engine familiesSaab cars imported into the United States
and Canada meet all applicable emission
control standards. The engine family and
appropriate tune-up specifications are iden-
tified on a label affixed to the left front inner
fender.
These engine families meet applicable EPA
Federal Standards, California State Stan-
dards and Canadian Federal Standards and
are equipped with the following systems:
• sequential multiport fuel injection system
 three way catalytic converter
 crankcase emissions control system
 evaporative emission system.
Emission control
systemsThe systems for controlling emissions to the
atmosphere require regular checking and
adjustment at the intervals specified in the
service program.
In addition to meeting the exhaust emission
regulations and thereby helping to keep the
environment clean, a correctly tuned engine
will also give maximum fuel economy.
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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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175 Car care
1 Oil filler cap
2 Coolant reservoir
3 Brake and clutch fluid reservoir
4Battery
5 Fuse box
6 Washer-fluid reservoir
7 Power-steering fluid reservoir
8 Engine-oil dipstick
Engine bay
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