2003 SAAB 9-3 catalytic converter

58 Instruments and controlsThis light comes on when there is less than
about 2.5 gallons (10 litre) of fuel left in the
tank.
This light indicates that the headlights or
parking lights are on.This light comes on when the system is
engaged.
This symbol can be found in cars with
manual transmission. The symbol is not
activated until the engine is warm.
It is not always necessary or even recom-
mended to shift up to a higher gear when
this symbol lights up, such as when driving
in heavy traffic or down a steep hill.
Changing up a gear when the symbol
comes on does however improve fuel econ-
omy. Make it a habit to shift up when the
symbol lights up.
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.
Indicator, fuel
NOTICE
If the car runs out of fuel, air can be drawn
in with the fuel, which, in turn, can cause
the catalytic converter to be damaged by
overheating.
Headlight and parking
light indicator
Cruise control indicator
light
Shift-up
(US-spec. cars only)
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126 Starting and drivingLimp-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.If the diagnosis function detects a fault in the
engine management system, the light
"Engine malfunction (CHECK ENGINE)" in
the instrument panel will come on (see page
55). Have the car checked at a Saab dealer
as soon as possible.
The following message is shown on the SID:
Important considarations with
catalytic 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 (precious
metal alloy).
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:
NOTICE If the engine sounds strange there is a
malfunction. Contact a Saab dealer
immediately.
 The use of fuel with too low an octane
rating can cause serious engine
damage.
Reduced engine power.
Contact Saab dealer.
NOTICEIf "Engine malfunction (CHECK
ENGINE)" warning light starts to flash
(indicating that the engine is misfiring and
the catalytic converter can be damaged),
ease off the accelerator slightly. The light
should go out or start to shine constantly.
If the light continues to flash despite
easing off the accelerator, you may
continue to drive the car but at the mini-
mum throttle permitted by the current traf-
fic situation. Have the car checked as
soon as possible at a Saab dealer.
NOTICEUse only unleaded gasoline. Leaded
gasoline is detrimental to the catalyst and
oxygen sensor and will seriously impair
the function of the catalytic converter.
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127 Starting and driving
 Have the car serviced regularly in accord-
ance with the service program.
 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 a Saab dealer.
 If the engine fails to start (in severe cold
or if the battery is flat), the car can be
bump started (manual transmission only)
or started using jump leads 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 5 minutes to give it time
to settle and run smoothly. If, after this
time, the engine still fails to run properly,
switch off the engine to avoid serious
damage to the catalytic converter.
Contact a Saab dealer for advice. Never park the car on dry grass or other
combustible material. The catalytic
converter gets very hot and could there-
fore start a fire.
 Never drive off if the engine is misfiring.
 If you bump start the car when the engine
is already at normal working temperature,
the engine must start to run on all cylin-
ders. Abort bump starting if the engine
fails to start immediately.
Failure to strictly follow these instructions
can result in damage to the catalytic con-
verter and associated components, and
could represent a breach of the warranty
conditions.
NOTICEIf the car runs out of gas, air may be drawn
in with the fuel, which, in turn, can cause
the catalytic converter to be damaged by
overheating.
WARNING
If the engine is being run with the car on a
rolling road or dynamometer, to ensure
adequate cooling, air must be blown into
the engine compartment and under the
car at a rate equivalent to the ram-air
effect that would obtain at the corre-
sponding road speed.
Engine management system with catalytic
converter1 Engine control module
2 Oxygen sensor
3 Catalytic converter
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135 Starting and driving
Park Brake Shift LockThe transmission has a security function
known as Park Brake Shift Lock. To move
the gear selector lever out of the P or N posi-
tion, the gear selector lever detent (catch)
must be pressed in at the same time as the
brake pedal is held depressed.
The detent button on the selector lever has
to be pressed in before the lever can be
moved between certain positions.
Temporary override of Park Brake Shift
Lock, see page 137.
Adaptive gear change patternsThe adaptive gear change pattern function
adapts gear changing to the prevailing driv-
ing conditions. The transmission control
module senses the engine load, vehicle
speed and temperature of the transmission.
A suitable gear change pattern is then
selected automatically to avoid unneces-
sary gear changes and undesired increases
in transmission temperature.
Certain variants use a special change pat-
tern for the first few minutes after a cold start
so that the catalytic converter reaches its
working temperature more quickly.
Thermal transmission protectionThe transmission has built-in protection
against overheating. This protection is pro-
vided by the control module, which changes
gear change patterns.
1 If the temperature of the transmission
fluid exceeds 257°F (125°C), the gear
change pattern is changed.
2 If the temperature of the transmission
fluid exceeds 275°F (135°C), the gear
change pattern is again changed.
3 If the temperature of the transmission
fluid exceeds 302°F (150°C), engine
torque will be limited to 147 ft.lbs.
(200 Nm).
The following message is shown on the SID:
If this message appears, stop the car as
soon as it is safe to do so and allow the
engine to idle until the message has gone
out. The selector lever should be in
position P.Gearbox too hot.
Make a safe stop.
Open hood to cool down.
Selector lever detent
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148 Starting and drivingParking brakeThe parking brake lever is situated between
the front seats. The brake acts on the rear
wheels. When the parking brake is applied,
the indicator light on the main instru-
ment panel will come on.
To release the parking brake, lift the lever
slightly, press the pawl button on the under-
side of the lever and lower the lever.If the parking brake is applied when the car
pulls off, the following message will appear
on the SID:
Parking
WARNING
Always apply the parking brake when
you park the car. If the car is to be
left parked for a long time, refer to
page 150.
 Always apply the parking brake before
removing the remote control.
 Do not use the parking brake while
driving.
 Grasp the parking brake lever in such
a way that no fingers get trapped when
you release the parking brake.
Release park brake.
WARNING
 Never leave children or pets unat-
tended in the car. In warm, sunny
weather, the temperature inside the
car can reach 160–180°F (70–80°C).
 Park where the vehicle will not create
an obstruction or a hazard to other
road users.
 Do not park on dry grass or other
combustible material. The catalytic
converter gets very hot and could start
a fire.
 Apply the parking brake.
 Shift into Reverse (automatic trans-
mission: select P), remove the remote
control and lock the car.
Correct hold
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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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252 IndexEESP, anti-skid system
___________ 146
Economical motoring ___________ 153
Electric engine heater ___________ 154
Electric heating, front seats
____ 83
, 92
Electric windows
________________ 99
Electrical system, technical data
___ 240
Electrically adjustable seats
_______ 18
Electronic Stability Program (ESP)
_146
Electronic steering wheel lock
____ 123
Emergency opening of the narrow
backrest
____________________ 119
Emergency operation of the sunroof
104
Engine bay, cleaning
___________ 218
Engine heater
_________________ 154
Engine immobilizer
______________ 45
Engine number
________________ 246
Engine oil, checking
____________ 176
Engine oil, grade
_______________ 238
Engine oil, volume _____________ 239
Engine temperature gauge
________ 60
Engine, description
_____________ 173
Engine, technical data __________ 238
Engines
______________________ 240
Extra electrical socket
___________ 108
FFactors affecting fuel consumption
_153
Filler cap
_____________________ 129Filling up
_____________________ 128
Flat spots, tyres
________________ 217
Folding down the rear seat
_______ 116
Front fog lights
_________________ 74
Front towing eye _______________ 164
Fuel filler flap, emergency opening
__ 52
Fuel gauge
____________________ 61
Fuel grade ____________________ 240
Functions, car alarm
_____________ 50
Fuse panel in luggage compartment
202
Fuse table
____________________ 201
Fuses
_______________________ 199
GGDO, garage door opener
_______ 112
Garage door opener
____________ 112
Gear selector indicator,
automatic transmission
__________ 62
Gearbox number
_______________ 246
Glove compartment _____________ 109
Glove compartment lighting
______ 196
HHandbrake
___________________ 148
Hazard warning lights
____________ 75
Head restraints
_________________ 20
Headlight flasher ________________ 72
Headlight levelling _______________ 73Headlights
_____________________ 72
Heated door mirrors
_____________ 83
Horn
__________________________ 98
Horn button
____________________ 98
IIgnition switch
_________________ 122
Immobilizer
____________________ 45
Important considerations for driving
125
Important information, petrol-engined
cars with catalytic converters
____ 126
Indicator lights
__________________ 54
Instrument illumination, adjusting
___ 73
Interior lighting
_________________ 105
Interior rearview mirror
__________ 111
Intermittent malfunctioning,
central locking
_________________ 40
JJack
_________________________ 214
Jump starting
__________________ 168
KKey
__________________________ 38
Kick-down
____________________ 136
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