2005 SAAB 9-5 fuel pressure

185 Car care and technical information
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 ope-
ning duration, ignition timing and turbochar-
ger boost pressure to provide excellent
engine performance while maintaining low
emissions and fuel consumption.
ORVR (Onboard Refueling Vapor
Recovery)Hydrocarbon vapors formed when refueling
will be recovered by the car and not rele-
ased into the atmosphere. The hydrocar-
bons are absorbed in a evaporative emis-
sion canister. When the engine is
subsequently started, the evaporative emis-
sion canister is gradually purged as air is
sucked into it through a shut-off valve. The
hydrocarbon/air mixture passes through the
evap canister purge valve and into the
engine where it is burned.
When refueling, make sure you screw the
filler cap on and keep turning until it has
clicked at least 3 times. Otherwise, it is pos-
sible for the CHECK ENGINE light to illumi-
nate.
Refueling, see page 138.
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)” 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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217 Car care and technical information
Tires Your new vehicle comes with high-quality
tires made by a leading tire manufacturer. If
you ever have questions about your tire
warranty and where to obtain service, see
your Saab Warranty and Service Record
Booklet for details.
Inflation - Tire PressureThe Tire-Loading Information label shows
the correct inflation pressures for your tires
when they’re cold. “Cold” means your
vehicle has been sitting for at least three
hours or driven no more than 1 mile (1.6
km).Notice:
Don’t let anyone tell you that
underinflation or overinflation is all
right. It’s not. If your tires don’t have
enough air (underinflation), you can get
the following:
Too much flexingToo much heatTire overloadingBad wearBad handlingBad fuel economy
If your tires have too much air (overinfla-
tion), you can get the following:Unusual wearBad handlingRough ride
Needless damage from road hazards
Adjust the tire pressure to match the current
load and speed of the car (see page 261).
The stated tire pressures apply to cold tires,
i.e. tires that are the same temperature as
the outside air temperature. Tire pressure
increases as the tires become warm (e.g.
during highway driving) by approximately
0.3 bar (4 psi). When the temperature of the
tires changes by 50°F (10°C), the tire pres-
sure will change 0.1 bar (2 psi).
Never reduce the pressure of a hot tire. If the
tires are hot when you check them, only
increase the pressure, if necessary.
WARNING
Poorly maintained and improperly used
tires are dangerous.
 Overloading your tires can cause
overheating as a result of too much
friction. You could have an blow-out
and a serious accident. See “Loading
Your Vehicle” on page 226.
 Underinflated tires pose the same
danger as overloaded tires. The
resulting accident could cause serious
injury. Check all tires frequently to
maintain the recommended pressure.
Tire pressure should be checked
when your tires are cold.
 Overinflated tires are more likely to be
cut, punctured or broken by a sudden
impact – such as when you hit a
pothole. Keep tires at the recom-
mended pressure.
 Worn, old tires can cause accidents. If
your tread is badly worn, or if your tires
have been damaged, replace them.
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226 Car care and technical informationLoading Your VehicleThis is an example of what your vehicle´s
Tire-Loading Information/Certification label
might look like. It is located on the B-pillar
and shows how much weight your vehicle
may properly carry. The label tells you the
proper size, and recommended inflation
pressures for the tires on your vehicle. It
also gives you important information about
the number of people that can be in your
vehicle and the total weight that you can
carry. This weight is called the Vehicle
Capacity Weight, and includes the weight of
all occupants, cargo and all nonfactory-
installed options.
Tire Terminology and DefinitionsAir Pressure:
The amount of air inside the
tire pressing outward on each square inch of
the tire. Air pressure is expressed in pounds
per square inch (psi) or kilopascal (kPa).
Accessory Weight:
This means the combi-
ned weight of optional accessories, for
example, automatic transmission, power
steering, power brakes, power windows,
power seats, radio and air conditioning.
Aspect Ratio:
The relationship of a tire´s
height to its width.
Belt:
A rubber coated layer of cords that is
located between the plies and the tread.
Cords may be made from steel or other rein-
forcecing materials.
Bias Ply Tire:
A pneumatic tire in which the
ply cords that extend to the beads are laid at
alternate angles substantially less than 90
degrees to the centerline of the tread.
Cold Inflation Pressure:
The amount of air
pressure in a tire, measured in pounds per
square inch (psi) or kilopascal (kPa), before
a tire have built up heat from driving. See
“Inflation - Tire Pressure” on page 217.
Curb weight:
This means the weight of a
motor vehicle with standard and optional
equipment including the maximum capacity
of fuel, oil and coolant, without passengers
and cargo.
DOT Markings:
A code molded into the
sidewall of a tire signifying that the tire is in
compliance with the U.S. Department of
Transportation motor vehicle safety stan-
dards. The DOT code includes the Tire
Identification Number (TIN), an alphanume-
ric designator which can also indentify the
tire manufacturer, production plant, brand
and date of production.
GVWR:
Gross Vehicle Weight Rating see
“Loading Your Vehicle” on page 226.
GAWR FRT:
Gross Axle Weight Rating for
the front axle, see “Loading Your Vehicle”
on page 226.
GAWR RR:
Gross Axle Weight Rating for
the rear axle, see “Loading Your Vehicle” on
page 226.
Intended Outboard Sidewall:
The side of
an asymmetrical tire that must always face
outward when mounted on a vehicle.
Kilopascal (kPa):
The metric unit for air
pressure. There are 6.9 kPa to one psi.
Light Truck (LT-Metric) Tire:
A tire used
on light duty trucks and some multipurpose
passenger vehicles.
Load Index:
An assigned number ranging
from 1 to 279 that corresponds to the load
carrying capacity of a tire.
This label can only be found on vehicles
sold in the U.S.
Vehicles sold in Canada have the tire
information label in the glovebox, see
page 262.
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268 IndexRearview mirrors
________________ 107
Reclamation
___________________ 242
Recommendations for cars with
automatic transmission, towing a
camper or trailer
_______________ 162
Refuelling
_____________________ 138
Relay panel ____________________ 214
Remote control __________________ 38
Remote-control battery, changing
____ 41
Remove the key
________________ 132
Replacement, wheel _____________ 222
Reporting safety defects
__________ 248
Reprogramming of systems _______ 264
Reservoir, power-steering fluid _____ 191
Rev counter
____________________ 58
Reversing lights _________________ 70
Roof load
_____________________ 166
Running-in ____________________ 157
SSDM
_________________________ 249
SID
___________________________ 61
Saab 9-5 Audio System
___________ 83
Saab Information Display (SID)
_____ 61
Saab Parking Assistance
_________ 177
Safety belts
_____________________ 16
Safety belts, care of
_____________ 235
Safety-belt pretensioners
__________ 16
Safety-belt reminder
______________ 16
Seats
__________________________ 12Securing a load
__________________ 42
Selector lever indication, automatic
transmission
___________________ 61
Sentronic, manual mode
__________ 148
Service costs
___________________ 247
Service information
______________ 248
Service intervals
________________ 246
Service record retention
__________ 247
Settings, seats
__________________ 12
Side airbags
____________________ 32
Signalling, horn _________________ 106
Sliding floor, 9-5 SportWagon
______ 129
Snow chains
___________________ 159
Spare wheel ___________________ 230
Spare wheel and tools
___________ 170
Spark plugs
____________________ 257
Speedometer ________________ 58
, 59
Starting in cold weather, ACC
_______ 79
Starting in hot weather, ACC _______ 79
Steering wheel adjustment
________ 106
Steering, technical data
__________ 259
Steps for determining correct load
limit
_________________________ 228
Stone-chip damage, repairing
______ 238
Storage compartments
___________ 118
Sun visors
_____________________ 117
Sunroof
_______________________ 114
Suspension ____________________ 259
Suspension, technical data
________ 259
Switches
_______________________ 67
Symboler ________________________ 9
Systems, adjustment
_____________ 264
TTCS OFF
_______________________ 57
Table of fuses
__________________ 213
Tachometer
_____________________ 58
Tailgate, opening
_________________ 42
Tank gauge
_____________________ 59
Technical data __________________ 251
Temperature control, ACC
_________ 75
Temperature gauge, engine ________ 59
Temperature zones, ACC
__________ 75
Textile carpeting
________________ 236
Through-load hatch ______________ 123
Tie Downs
_____________________ 123
Tightening torque, wheel studs
_____ 231
Tip, driving at night
______________ 168
Tip, to avoid theft
________________ 179
Tire chains
_____________________ 223
Tire date code __________________ 229
Tire inspection and rotation
________ 218
Tire markings
___________________ 225
Tire pressure ___________________ 169
Tire sidewall labeling
_____________ 224
Tire terminology and definitions
____ 226
Tire, compact spare
______________ 230
Tires
_____________________ 217
, 260
Tires, winter
____________________ 260
Tools
_________________________ 170
Touching-in the paintwork
_________ 238
Towbar attachment
______________ 161
Towbar load
____________________ 165
Towing the car __________________ 171
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