2002 SAAB 9-3 charging

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Page 61 of 256

SAAB 9-3 2002 Owners Manual 61 Instruments and controls

Warning charging
This light comes on together with if the
battery is not charging. If it comes on while
you are driving, stop the car as soon as pos-
sible and switc

Page 63 of 256

SAAB 9-3 2002 Owners Manual 63 Instruments and controls
Central warning light
This light comes on and a chime will sound
if a fault has been detected in any system
that is critical to safety. Any of the following
can activat

Page 68 of 256

SAAB 9-3 2002 Owners Manual 68 Instruments and controlsUnder certain barometric conditions the
needle may enter the first part of the red
zone without necessarily indicating that a
fault has arisen.
If the needle repeatedly

Page 148 of 256

SAAB 9-3 2002 Owners Manual 148 Starting and drivingStarting the engine The engine has an automatic choke and
should be started as follows:
Cars with manual gearbox
To start the engine the clutch pedal must
be fully depressed.

148 Starting and drivingStarting the engine The engine has an automatic choke and
should be started as follows:
Cars with manual gearbox
To start the engine the clutch pedal must
be fully depressed.
1 Depress the clutch pedal but do not
touch the accelerator.
2 Start the engine. Let the ignition key
spring back as soon as the engine has
started and is running smoothly – at very
low temperatures, you may need to run
the starter for up to 50 seconds.
Let the engine idle for about 10 seconds. Do
not open the throttle wide for at least
2-3 minutes after starting.
Cars with automatic transmission
The selector lever must be in the P or N
position.
1 Keep your foot on the brake pedal.
2 Start the engine. Let the ignition key
spring back as soon as the engine has
started and is running smoothly – at very
low temperatures, you may need to run
the starter for up to 50 seconds.
Let the engine idle for about 10 seconds. Do
not open the throttle wide for at least
2–3 minutes after starting.
Useful tips on cold climate startingIf the engine has failed to start after several
attempts in very cold weather, press and
hold the accelerator down to the floor and
run the starter for 5–10 seconds. This will
prevent the engine being flooded (exces-
sively rich fuel-air mixture).
Now start the engine in the normal way – do
not touch the accelerator.
If the engine stalls immediately after starting
(e.g. if the clutch was released too quickly),
do not touch the accelerator when restarting
the engine.
Every time the engine is switched off the
spark plugs are automatically cleaned. If
your attempt to start nevertheless fails, let
go of the ignition key and allow it to spring
back. This initiates more vigorous cleaning
of the sparking plugs which goes on for
about 5 seconds. Then start in the ordinary
way. Do not touch the accelerator; if the
accelerator is pressed to the floor the fuel
supply is shut off.
Important
considerations for
drivingThe engine-management system in the
Saab 9-3 is called Saab Trionic T7. The
system manages the ignition, fuel injection
and turbo boost pressure.
The Trionic T7 system developed by Saab
is an intelligent engine-management
system designed to achieve optimum drive-
ability under differing driving conditions.
The system makes adjustments automati-
cally, for instance, if the car is being driven
at altitude (oxygen-deficient air), for differ-
ent grades of fuel (AON 87–93) and for dif-
ferent load conditions.
1 Starting and driving
Refrain from using full throttle before
the engine has warmed up (before
needle is in the mid-range on tempera-
ture gauge) to avoid unnecessary
wear. If the needle of the pressure
gauge repeatedly enters the red zone
the engine may suddenly lose power,
owing to the intervention of a monitor-
ing system which curtails the charging
pressure. Get in touch with an autho-
rized Saab dealer at once.
A safety function prevents the engine
from reving faster than 6,200 rpm by
temporarily shutting of the fuel injec-
tors.
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Page 149 of 256

SAAB 9-3 2002 Owners Manual 149 Starting and driving
2 Stopping the engine
Do not rev the engine immediately
before switching it off - stop the engine
when it is idling.
3 Regulating the charging pressure
The system is o

149 Starting and driving
2 Stopping the engine
Do not rev the engine immediately
before switching it off - stop the engine
when it is idling.
3 Regulating the charging pressure
The system is optimized for fuel with an
octane rating of AON 90. For cars with
205 hp engines and the Viggen, the
system is optimized for AON 93. One of
the advantages of the system is that it
enables the engine to be run safely on
lower-grade fuel, although not lower
than AON 87. However, engine perfor-
mance will fall off slightly, and heavy
loading should be avoided. For best
performance you should use the rec-
ommended grade of fuel, AON 90
(205 hp engine and Viggen AON 93).
The maximum boost pressure is
adjusted automatically to the knocking
or pinging tendency of the engine.
Occasional, short-lived knocking when
the engine is under a heavy load is per-
fectly normal; the extent will depend on
the grade of fuel in the tank.
Isolated instances of knocking are
more likely to occur with low-octane
fuel. This controlled form of knocking,
followed by a reduction in the boost
pressure, is a sign that the wastegate is
functioning and is perfectly safe for the
engine.Saab 9-3 Viggen: The Saab 9-3 Viggen has
a high-performance engine which means
that a certain amount of care should be
exercised, in particular when accelerating in
the lower gears. This is especially important
when the road surface is slippery to avoid
the driving wheels from losing their grip.
Limp-homeThe car’s engine management system has
a diagnostics function that, once the engine
has been switched off, checks a number of
internal functions. If a throttle valve fault is
detected, the engine management system
will initiate limp-home mode for the valve.
This means, for example, that idling speed
regulation will be impaired, the cruise con-
trol system will be inoperative, and the
capacity of the A/C compressor will be lim-
ited.
When starting the car in limp-home mode at
temperatures below 32°F (0°C), depress
the accelerator slightly.
If the diagnosis function detects any faults in
the engine management system, the
“Engine malfunction (CHECK ENGINE)
“ indicator in the main instrument panel
will light up (see page 63). The car should
be checked as soon as possible at an
authorized Saab dealer.
NOTEIf constant knocking occurs every time a
load is put on the engine, this indicates a
malfunction in the system.
Have the car checked without delay by an
authorized Saab dealer. NOTEIf the engine is being run with the car on a
rolling road or dynamometer, longer than
for a standard state emission inspection,
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 be obtained at
the corresponding road speed.
ProCarManuals.com

Page 196 of 256

SAAB 9-3 2002 Owners Manual 196 Car careThe liquid level in the car battery must be
checked at regular intervals.
Tap water contains salts and minerals that
accelerate the corrosion of the battery elec-
trodes, which can short

Page 197 of 256

SAAB 9-3 2002 Owners Manual 197 Car care
Drive beltThe alternator is situated on the right-hand
side of the engine. It is driven via a poly-V
belt from the crankshaft pulley.
The poly-V-belt also drives the water pump,
the A

Page 226 of 256

SAAB 9-3 2002 Owners Manual 226 Car careAir conditioning
(A/C system)
Fault diagnosis If a fault occurs in the A/C system, there are
a number of checks you can perform your-
self. If the fault persists, however, have the
sys

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