2002 SAAB 9-5 fuel pressure

191 Car care and technical information
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 control system.
 On-Board diagnostic (OBD II) 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.Saab 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 and
 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.
NOTEThe Trionic engine management systems
continuously monitors the operation of
these systems and have on-board diag-
nostic capabilities (OBD II).
If the ”Engine malfunction (CHECK
ENGINE)” lamp in the main instru-
ment illuminates, this indicates that 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.
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222 Car care and technical informationWheels Alternative wheels and tiresIf you wish to fit other tires or wheels than
those supplied with the car, consult your
Saab dealer first as to the possibilities avail-
able.
Wheels/tires combinations that are not
approved by Saab can negatively affect the
car´s directional stability, steering and brak-
ing in both wet and dry conditions.
Do not assume that a wheel/tire combina-
tion will function properly just because it will
bolt on.
The wheels and tires have been carefully
matched to the characteristics of the car and
play a key role in its outstanding roadhold-
ing and handling.
To ensure that the speedometer is as accu-
rate as possible it should be reprogrammed
if wheels of a different dimension are fitted.
Contact an authorized Saab workshop.
Tire pressureTires need to be inflated to suit the load car-
ried and the maximum speed the car will be
driven (see the recommended tire pres-
sures on the back cover). Note that all
values apply to cold tires. For tires with an
aspect ratio less than /60, increase the tire
pressure by 3 psi (20 kPa) for rough roads
with potholes to minimize the risk of rim
damage.
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. They also increase
fuel consumption.
If a valve is leaking, simply unscrew it and fit
a new one.
Important! Remember to adjust the tire
pressures if you change the load in the car
or intend to cruise at a substantially higher
or lower speed than normal.
NOTEAlways consult your Saab dealer before
changing the wheels and tires on your
Saab.
For wide wheels and/or low-profile tires,
bear in mind the following:
 Tires and wheels can be damaged in
potholes etc.
 Springs, shock absorbers and wheel
bearings and body mountings can be
overloaded.
 The wheels can come into contact with
chassis and body components.
 The speed and load limits for the tires
must not be exceeded; see page 223.
 Wheels larger than 17” must not be fit-
ted. The maximum permissible offset
is 49 mm.
 Tire and wheel size can affect the
function of the Electronic Stability
Program (ESP).
NOTECheck the tire pressures at least once
per month.
Underinflation is the main cause of:
 Tires wearing out prematurely.
 Damage to the sidewalls.
 Damage to the wheels.
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239 Car care and technical information
Headlight 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.
 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
perpendicular 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.NOTETo 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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263 Index
Light switches
___________________ 65
Luggage-compartment lighting
______ 69
MMain instrument panel
_____________ 50
Main/dipped beam
_______________ 65
Maintenance schedule ___________ 244
Manual gearbox, technical data
____ 254
Maxi fuses
_____________________ 217
Milometer ______________________ 56
Motoring abroad
________________ 237
NNight Panel
_____________________ 63
OOil capacity, engine
______________ 250
Oil change, engine ______________ 194
Oil specification
_________________ 250
OnStar
________________________ 105
Outdoor temperature
______________ 59
Owner assistance
_______________ 245
PPaintwork, touching-in
____________ 234
Parking Assistance
______________ 184
Parking lights
___________________ 65
Plates and labels ________________ 257
Poly-V-belt
____________________ 201Power steering
_________________198
Power-steering fluid
_____________198
Pressure gauge
__________________58
Programming I, ACC
______________78
Programming II, ACC _____________79
Programming the ACC ____________78
QQuestions on function of airbag
_____35
Quick guide, Audio System
_________85
RRadio
__________________________88
Rain sensor
_____________________70
Rear fog light ____________________66
Rear seat, 9-5 Sedan, folding
______132
Rear seat, 9-5 Wagon, folding _____135
Rear-seat head restraints
__________18
Rear-view mirror, antidazzle _______124
Rearview mirrors
________________123
Reclamation
___________________237
Recommendations for cars with
automatic transmission,
towing a caravan or trailer
________174
Refuelling
_____________________152
Relay panel ____________________219
Remote control __________________38
Remote-control battery, changing
____40
Remove the key
________________146
Reporting safety defects
__________246Reprogramming of systems
______ 259
Reservoir, power-steering fluid ____ 198
Rev counter
____________________ 56
Reversing lights
_________________ 68
Roof load
_____________________ 176
Running-in ____________________ 170
SSID
__________________________ 59
SRS (airbag)
___________________ 29
SRS, supplementary restraint system
29
Saab 9-5 Audio System
___________ 83
Saab Information Display (SID)
_____ 59
Saab Parking Assistance
________ 184
Safety belts
____________________ 12
Safety belts, care of
_____________ 232
Safety-belt pretensioners
_________ 13
Safety-belt reminder
_____________ 12
Seats
________________________ 118
Securing a load
_________________ 41
Selector lever indication,
automatic transmission
__________ 59
Service costs
__________________ 245
Service information
_____________ 246
Service intervals
_______________ 244
Service record retention
_________ 245
Settings, seats
_________________ 118
Side airbags
___________________ 32
Signalling, horn ________________ 122
Sliding floor, 9-5 Wagon
_________ 140
Snow chains
__________________ 171
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