Engine SAAB 9-3 2002 Service Manual

155 Starting and driving
Engine Break-in PeriodPistons, cylinder bores and bearings need
time to obtain uniform, wear-resistant sur-
faces.
If a new engine is driven too hard, this grad-
ual process of bedding-in will not be possi-
ble and the life of the engine will be short-
ened.
During the first 1,200 miles (2,000 km), do
not exceed 5,000 rpm.
In addition, refrain from driving the car at full
throttle, other than for brief instances,
during the first 1,800 miles (3,000 km).Wearing in new brake padsNew brake pads take time to bed in, about
90 miles (150 km) if the car is driven largely
under stop-and-go conditions or about
300 miles (500 km) of highway driving.
To extend the useful life of the pads, avoid
hard braking as much as possible.
Manual transmissionTo start the engine the clutch pedal must
be fully depressed.
The gear positions are marked on the gear
lever. Before reverse (R) can be engaged,
you must lift the ring underneath the
gear-lever knob.
To change gear, fully depress the clutch
pedal and then release it smoothly. It is
inadvisable to drive with your hand resting
on the gear lever, as this can increase the
wear on the gearbox.
When shifting down from 5th to 4th gear,
ease the gear lever straight back, without
applying any lateral pressure. This will pre-
vent 2nd gear being engaged by mistake,
which can result in overreving and possible
damage to the engine.
Shift-up indicator for improved fuel
economy
(U.S. models only except Viggen)Cars equipped with a manual transmission
have a "Shift-up" light on the instrument
panel. The light begins to work after the
vehicle is warmed up and provides you with
a good indication when to shift to a higher
gear.
It is not necessary or recommended to
follow the shift-up recommendations in all
driving conditions, for example, when driv-
ing in heavy urban traffic or steep downhill
grades.
However, shifting with the light should result
in improved fuel economy. Therefore, for
reduced fuel consumption and better
energy conservation, you should make a
habit of shifting before or when the shift-up
light comes on.
NOTEWhen the reverse gear is to be engaged
the car must be at a standstill with the
accelerator fully released. Lift the reverse
lock-out collar and push the gear lever
firmly to the right in neutral before easing
it into reverse.
IB864
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156 Starting and drivingAutomatic transmission

The electronic control module for the auto-
matic transmission receives information on
engine torque and road speed. It also con-
trols the hydraulic pressure in the transmis-
sion to ensure that gear changing is as
smooth as possible.
The position of the selector lever is shown
by the symbols adjacent to the lever and
also by an indicator on the main instrument
panel.
The ignition key can only be removed when
the selector lever is in the P position.When the car is stationary, the engine must
be idling when the selector lever is moved.
You must have your foot on the brake
pedal to move the lever out of park.
If the accelerator is depressed while the
lever is moved, this will result in abnormal
wear in the transmission.
WARNING
 Make it a habit to keep your foot on the
brake when selecting a drive position,
to prevent the car from creeping for-
ward (or backwards if reverse is
selected).
 The car must be at a standstill before
P, R or N is selected. You have to have
your foot on the brake pedal to move
the lever out of park. If the car is still
moving when a drive position is subse-
quently selected, this could cause a
crash or damage the automatic trans-
mission.
 Never park the car with the selector
lever in a drive position, even if the
parking brake is on.
 If you want to leave the car with the
engine running, move the selector
lever to P or N and apply the parking
brake.
NOTEAfter selecting a drive position, pause
briefly to allow the gear to engage (the car
starts to pull a little) before you acceler-
ate.
IB865
Selector lever 1Catch
2 Button for SPORT position
3 Button for WINTER position
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157 Starting and driving
The detent button on the selector lever has
to be pressed before the selector can be
moved between certain positions.
Three modes for the automatic transmis-
sion can be selected: Normal, Sport and
Winter.
The Normal mode, which provides the best
fuel economy, is the default setting when
the engine is started.
Sport mode alters the angle of the throttle
valve for increased power compared to the
same accelerator position in Normal mode.
This means gear changes are made to opti-
mize the car’s performance. The SPORT
indicator light is shown on the main instru-
ment panel; see page 162). The Winter mode is intended for use when
pulling away and driving on icy roads. In this
mode, the transmission starts in 3rd gear, to
provide better grip, and the WINTER indica-
tor appears on the main instrument panel.
When the ignition is turned to OFF, the auto-
matic transmission will automatically revert
to Normal mode (see page 162).Adaptive gear change pattern is a func-
tion of the Normal and Sport modes. It
allows gear changing to be suited to the pre-
vailing driving conditions. The transmission
control module senses the engine load and
temperature of the transmission and selects
one of the four available gear change pat-
terns. Unnecessary gear changes and
undesired temperature increases in the
transmission are avoided.
IB1280
Indication of gear position on the main
instrument panel
PRND
3
2
1
IB866
Detent positions for selector movement
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158 Starting and drivingLock-up functionThe automatic transmission has a lock-up
function, which renders the torque con-
verter inoperative in 3rd and 4th gears. The
result is reduction in the engine speed and,
hence, fuel consumption.
When the lock-up function comes into oper-
ation, it may give the impression of an over-
drive being engaged.Kick-downWhen the accelerator is pressed down hard,
a downshift to the next lower gear will occur
to provide maximum acceleration, e.g. for
overtaking.
The change-up to the next gear again will
take place either when the accelerator is
released or when maximum engine speed
for that gear is reached.
Park Brake Shift LockThe transmission has a safety function
called Park Brake Shift Lock. For the selec-
tor lever to be moved out of the P position,
the brake pedal must be depressed at the
same time as the detent button is lifted.
Park Brake Shift Lock override
1 Apply the parking brake.
2 Make sure the key is in the ON position.
3 Use a small tool such as a screwdriver
and push the lever downwards so that
the detent button can be pressed
approx. 10 mm.
4 Move the selector out of position P to N.
5 Remove the tool.
6 Release the parking brake if the car is to
be moved immediately; otherwise keep
it applied.Check fuse No. 12 (see page 208). If the
fuse is OK, check the battery voltage.
If the problem was cured by changing the
fuse or battery, you do not have to contact a
Saab dealer.
If the fuse blows again as soon as the Shift
Lock feature is activated you should contact
your Saab dealer.NOTEIf a problem arises with the shift lock
mechanism, it may not be possible to
move the selector out of the park position,
even if the ignition is ON. If for some
reason the selector has to be moved out
of the park position (i.e. to tow the car a
short distance) do as described below.
IB947
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159 Starting and driving
Automatic transmission
fault indicator
If the symbol appears on the main instru-
ment panel, the system has detected a fault
in the automatic transmission or its control
module (see page 64).
This also means that the Limp-home mode
has been selected, to guard against further
damage being done to the transmission. In
this mode, the automatic transmission
starts in 4th gear, and gear changes (if nec-
essary) will have to be made manually.
It is not possible to select the SPORT or
WINTER mode when the Limp-home mode
is active.
You should have the automatic transmis-
sion checked as soon as possible by an
authorized Saab dealer.
The following gears will be engaged in the
respective selector positions when the auto-
matic transmission is in the Limp-home
mode:
Overheated transmission oilIf the transmission oil becomes overheated
while driving, the following message
appears on the SID: TRANSMISSION
OVERHEATING. In this event, stop the car
in a suitable place, switch off the engine,
open the hood and wait until the message
goes out. When driving subsequent to the
transmission oil overheating, select either
3rd gear or Drive, whichever will allow the
engine to run at 3,000 rpm and maintain the
speed of traffic or a safe speed.
The transmission oil can become very hot
when the car is driven with a heavy load; for
example, driving with a trailer on hilly roads
when the wrong gear has been selected,
resulting in many extra gear changes.
Select one of the positions 1, 2 or 3. A high
outside temperature or a defective oil cooler
can also cause the oil temperature to
increase. Contact an authorized Saab
dealer, see also page 173.
Driving in hilly country with a heavy
loadOverheating of the automatic-transmission
fluid can occur when the car is towing a
heavy load, such as a trailer in hilly country,
with the wrong gear selected, resulting in
abnormally frequent gear changing. To
avoid the transmission oil from overheating
always drive in Normal mode, then the
adaptive gear change pattern is active.
High ambient temperatures can also
increase the temperature of the transmis-
sion fluid or the oil cooler may be faulty. As
the transmission fluid temperature
increases, its useful service life is reduced.
Contact an authorized Saab dealer (see
also page 173).TowingTowing a car with automatic transmission,
see page 181. Position R D 3 2 1
Gear Reverse 4th 4th 3rd 3rd
NOTEIf the control module has actuated the
Limp-home function for the automatic
transmission, the car will remain in 4th
gear when D and 3 are selected, making
it very sluggish. To overcome this, move
the selector lever to position 1. The trans-
mission then starts in 3rd gear. When the
car is moving you can select position D
or 3.
WARNING
Remember to use engine-braking (selec-
tor position 1, 2, or 3) to spare the brakes
when you are driving on a long or steep
downhill slope.
Brake failure can result from overheated
brakes!
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160 Starting and drivingSelector positions
P
To shift out of the P position you must depress
the brake pedal and the ignition must be OFF.
The parking position (P) must only be selected
when the car is at a complete standstill. The selec-
tor lever is locked and the transmission is
mechanically immobilized. Always apply the park-
ing brake after parking the car.
The engine can be started.
R
The reverse (R) position must only be selected
when the car is at a complete standstill. The
detent-release button must be pressed before the
selector lever can be moved to R. Wait until
reverse gear has engaged (car starts to creep)
before touching the accelerator.
N
In the Neutral position (N), the transmission is dis-
engaged from the engine. The engine can be
started, but first ensure that the parking brake is
on, to prevent the car from moving off unexpect-
edly.
To prevent the engine and transmission from
becoming hotter than necessary, select N for
stops other than brief ones, e.g. if stuck in a traffic
jam.
The normal drive position (D) is recommended for
waiting at traffic lights.
D
The Drive position (D) is the position for normal
motoring. Gear changes between 1st and 4th will
take place automatically, the timing of which is
determined by the throttle (accelerator) position
and the speed of the car.
After moving the selector lever to D, pause to give
the gear time to engage (car starts to pull).
3
In position 3, 4th gear is locked out. The car will
start in 1st gear and normal gear changing (up
and down) will take place automatically between
gears 1, 2 and 3.
Moving the selector lever from D to 3 will cause a
downshift to 3rd gear, which will give better
engine-braking.
Do not move the selector to position 3 at speeds
in excess of 90 mph (150 km/h).
2
Position 2 is recommended in hilly country as it
provides effective engine-braking. Normal gear
changing (up and down) between 1st and 2nd
gear will take place automatically. Third and 4th
gears are locked out.
Do not move the selector to position 2 at speeds
in excess of 70 mph (110 km/h).
1
Position 1 should be used when maximum
engine-braking is required on steep downhill
slopes.
Do not move the selector to position 1 at speeds
in excess of 30 mph (50 km/h).
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161 Starting and driving
If the gear selector lever is moved from position D to 1, a
change-down to 3rd gear will occur at about 110 mph (180 km/h).
A change-down to 2nd gear will occur at about 75 mph (120 km/h)
and to 1st gear at about 40 mph (65 km/h).
When position 1 is selected, all the other gears will be locked out.
Manual gear-changing is not recommended on slippery roads.
If one of the drive wheels spins excessively, the engine torque will
be reduced to avoid damaging the transmission.
Adaptive gear-change patternsAdaptive gear-change patterns are selected automatically depend-
ing on the engine load. This function applies in the Normal and Sport
modes.
The change occurs at a higher rotation speed and the gear remains
engaged for a longer period, if the control module senses that the
load does not drop. These change patterns avoid unnecessary gear
changes when, for example, driving on long inclines with a trailer,
and to prevent overheating of the transmission oil. This function cuts
in automatically if the oil becomes too hot, to protect the transmis-
sion from damage, and lowers the oil temperature.
The adaptive change pattern function is not activated at speeds over
93 mph (150 km/h). If a pattern is in operation when this speed is
exceeded, it will be maintained until the control module senses that
a more suitable one can be activated.
The adaptive gear-change pattern function is deselected when:
 Winter mode is selected.
 The engine is switched off.
 The load is reduced by so much that this function is no longer
required.
 “Automatic transmission fault indicator” appears on the
main instrument panel, see page 159.
NOTE Do not move the selector to position 3 at speeds in excess of
90 mph (150 km/h).
 Do not move the selector to position 2 at speeds in excess of
70 mph (110 km/h).
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162 Starting and drivingThe SPORT and WINTER modes
To s e l e c t Sport mode, press the ”S” button on the
selector lever when the selector lever is in position
N, D, 3, 2 or 1.
In this mode, gear changes will take place at
higher engine speeds than in Normal mode, in
other words, the transmission will shift up later
and shift down earlier for the same throttle (accel-
erator) position.
The Sport mode will be deselected if:
 The S button is pressed.
 The selector lever is moved to position P or R.
 The engine is switched off.
 The Winter mode is selected.
 “Automatic transmission fault indicator”
appears on main instrument panel, see page
159.
To select Winter mode, press the “W“ button. The
Winter mode facilitates starting off and driving on
icy roads. Third gear is selected automatically for
starting off to reduce wheelspin.
Winter mode can be selected when the engine is
running by pressing the ”W” button on the selec-
tor-lever surround. It cannot be selected when the
selector lever is in position 2 or 1.
Note: It is still possible to use kick-down in the
Winter mode, in which case a change-down to
2nd or 1st will take place.
The Winter mode will be deselected if:
 The W button is pressed.
 The engine is switched off.
 The selector lever is moved to position 2 or 1.
 The automatic-transmission fluid overheats.
 “Automatic transmission fault indicator”
appears on main instrument panel, see page
159.
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163 Starting and driving
Cruise ControlFor safety reasons (brake system func-
tion) the brakes must be applied once,
when the engine has started, before the
cruise control system can be activated.
The system is operated by means of the
controls on the stalk switch:
 OFF (system is disconnected; the system
is always in the OFF position when the
engine is started).
 ON (system switched on).
 SET/+ (to set the desired speed).
 CANCEL (cancel operation of system,
e.g. to reduce speed temporarily).
 RESUME/– (resume preset speed).
When the system is ON, the CRUISE indi-
cator light will appear on the main instru-
ment panel and will be extinguished when
the system is switched OFF. If CANCEL is
selected, CRUISE will flash off once.
To set the desired speed Move the switch to ON. Accelerate to the
desired speed (minimum speed: 25 mph
(40 km/h) and press SET/+. To increase the preset speed Accelerate to the desired speed and press
SET/+.
You can also increase the speed of the car
using the SET/+ button. Press it once to
increase the speed by 1 mph (1.6 km/h) or
hold it in and release when the desired
speed is reached.
Temporary increase in speed Press the accelerator to override the preset
speed, e.g. for overtaking.
When you release the accelerator, the
system will revert to the preset speed. To cancel temporarily Move the control stalk to CANCEL
(spring-loaded position before OFF posi-
tion). This will disengage the system but the
preset speed will be retained in the system
memory. (The memory is deleted when the
engine is switched off.) To re-engage the system To revert to the preset speed, slide the
switch to RESUME/–. This will only operate
when the car’s speed is above 25 mph
(40 km/h). To reduce the preset speedThe cruise-control system will always disen-
gage automatically the moment that either
the brake pedal or the clutch pedal is
depressed.
It is also possible to reduce the speed by:
 Sliding the button to RESUME/– once will
reduce the speed by 1 mph (1.6 km/h).
 Holding the button in the RESUME/–
position will effect a gradual reduction in
speed until the button is released.
WARNING
 Do not use the Cruise-control system
on wet or icy roads, in dense traffic or
on winding roads
 To prevent the system being activated
inadvertently, set the control to OFF
when you do not want to use the
system
IB1593
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164 Starting and drivingDisengaging the system The system will be disengaged:
 When the brake or clutch pedal is
depressed.
 When the switch is moved to CANCEL.
 When the switch is moved to OFF.
 When the engine is switched off.
 When the selector lever is moved to posi-
tion N (cars with automatic transmission).
BrakingTo avoid overheating the brakes, (e.g. when
negotiating long descents with a drop of
several hundred feet), select a low gear to
use the braking effect of the engine. If the
car has automatic transmission, move the
selector lever to position 1 or 2.
When driving fast, you can help to prolong
the life of the brakes by thinking ahead and
braking harder for short periods, rather than
braking more moderately over long
stretches. Brake pad wear indicatorsThe outboard brake pads on the front
wheels incorporate pad-wear indicators.
When the lining is down to 3 mm, the pad
will produce a screeching, squealing or
scraping noise when the brakes are applied.
New pads should be installed without delay.
Brake pads should only be replaced by
an authorized Saab dealer.
To ensure optimum brake performance,
it is recommended that you use only
Saab original brake pads.

WARNING
 It is prudent to try your brakes from
time to time, especially when driving in
heavy rain, through water collected on
the road, in snow, on a wet road sur-
face or in salty slush. In such condi-
tions, the brakes may take longer than
normal to take effect. To rectify this,
touch the brake pedal periodically to
dry the brakes out.
 The same applies after the car has
been washed or when the weather is
very humid.
 Avoid parking the car with wet brakes.
Before parking, and if the traffic condi-
tions allow, brake quite heavily so that
the brake discs and pads warm up and
dry.
 The brakes are power assisted and it
should be kept in mind that the servo
unit only provides the power assis-
tance when the engine is running.
 The brake pressure required when the
engine is off,( e.g. when the car is
being towed) is roughly four times the
normal pedal force required. The
pedal also feels hard and unrespon-
sive.
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