212
Maintenance, Car Care
How Emission Control Works When an automobile engine is running, it uses en-
ergy generated through the combustion of a mix-
ture of air and fuel. Depending on whether a car is
driven fast or slowly or whether the engine is cold
or hot, some of the fuel (hydrocarbons) may not
be burned completely, but may be discharged into
the engine crankcase or exhaust system. Additon-
al hydrocarbons may enter the atmosphere
through evaporation of fuel from the fuel tank.
These hydrocarbons (HC), when released into the
air, contribute to undesirable pollution.
In addition, carbon monoxide (CO) and oxides of
nitrogen (NOx) contribute to engine emissions.
They, too, are formed during the combustion proc-
ess and discharged into the exhaust system.
To reduce these pollutants, your Porsche is
equipped with a precisely calibrated fuel injection
system to assure a finely balanced air/fuel mixture
under all operating conditions.
Oxygen sensor The oxygen sensor, installed in the exhaust pipe
continuously senses the oxygen content of the
exhaust and signals the information to an electron-
ic control unit. The control unit corrects the air/
fuel ratio, so the engine always receives an accu-
rately metered air/fuel mixture. Crankcase ventilation Through crankcase ventilation, undesirable emis-
sions from the engine crankcase are not permit-
ted to reach the outside atmosphere. These emis-
sions are recirculated from the crankcase to the
air intake system. From here the emissions mix
with the intake air and are later burned in the en-
gine. Catalytic converters The catalytic converters are efficient “clean-up”
devices built into the exhaust system of the vehi-
cle. The catalytic converters burn the undesirable
pollutants in the exhaust gas before it is released
into the atmosphere.
The exclusive use of unleaded fuel is critical-
ly important for the life of the catalytic con-
verters. Therefore, only unleaded fuel must
be used.The catalytic converters will be damaged by:
– push or tow starting the vehicle
– misfiring of the engine
– turning off the ignition while the vehicle is mov-
ing or
– driving until the fuel tank is completely empty
– by other unusual operating conditions.
fDo not continue to operate your vehicle under
these conditions, since raw fuel might reach
the catalytic converters. This could result in
overheating of the converters. Federal law pro-
hibits use of leaded fuel in this car.
Maintenance, Car Care
221
Automatic car washes
Optional add-on parts or parts which project
beyond the contours of the vehicle may be
damaged by design features (e.g. brushes) of au-
tomatic car washes.
The following parts are particularly
susceptible to damage:
– Convertible top (hot wax treatment cannot be
used, as the wax attacks the convertible top
material)
– Windshield wipers (always switch them off to
prevent them wiping unintentionally in intermit-
tent or sensor operation)
– External antennas (always unscrew)
– Roof Transport System (always remove com-
pletely)
–Rear spoiler
– Wheels (the wider the rim and the lower the tire
height, the greater the risk of damage)
– High-gloss wheels (to prevent these from get-
ting scratched, do not clean with the wheel-
cleaning brushes of the car wash).
fPlease consult the operator before using auto-
matic car washes.
fWash and dry by hand all points not reached by
a car wash, such as door and lid seams or
door sills. Note
Automatic car washes spray water at odd angles
and high pressures, which are not seen in normal
driving. Therefore, water can sometimes find its
way into the passengers compartment during or
shortly after the car wash.
Door lock fTo prevent the door lock from freezing during
the cold season, the lock cylinder should be
covered during a wash.
fShould the lock freeze, use an ordinary de-icer.
In many cases, a well warmed key can help.
Never use excessive force.
286
Technical Data
Technical DataEngine data
911 Carrera, 911 Carrera 4 911 Carrera S, 911 Carrera 4S 911 Carrera S, 911 Carrera 4S
(increased performance version)
Type M 96/05 M 97/01 M 97/01S
Horizontally opposed engine,
liquid cooledHorizontally opposed engine,
liquid cooledHorizontally opposed engine,
liquid cooled
Number of cylinders 6 6 6
Bore 3.78 in./96 mm 3.90 in./99 mm 3.90 in./99 mm
Stroke 3.26 in./82.8 mm 3.26 in./82.8 mm 3.26 in./82.8 mm
Cubic capacity 219.4 cu. in./3596 cm
3 233.3 cu. in./3824 cm
3
233.3 cu. in./3824 cm
3
Net-horsepower, SAE J 1349 325 hp/239 kW 355 hp/261 kW 381 hp/280 kW
at crankshaft speed 6800 rpm 6600 rpm 7200 rpm
Net torque, SAE J 1349 273 ft. lb./370 Nm 295 ft. lb./400 Nm 307 ft. lb./415 Nm
at crankshaft speed 4250 rpm 4600 rpm 5500 rpm
Engine control Stationary high-voltage distribution, sequential injection,
cylinder-selective knock-control, stereo oxygen sensor closed-loop control, diagnostic system,
4 overhead camshafts, Porsche VarioCam Plus, hydraulic valve clearance compensation
306
Index
HHandbrake ................................................... 65
Hardtop ..................................................... 189
Headlights ..........................................132
, 268
Adjusting ....................................279, 280
Cleaning system ................ 133
, 213
, 291
Headlights beam adjustment........................ 132
Heated rear window ...................................... 33
Heater ....................................................... 138
High beam
Indicator light........................................ 91
Lever ................................................. 131
Home mode ............................................... 131
HomeLink................................................... 155
Hoods................................................148, 149
Horn ............................................... 17
, 22, 24
IIgnition lock.................................................. 80
Immobilizer .................................................. 19
Indicator lights.............................................. 84
Instrument.................................................... 84
Illumination ........................................... 88
Lights ................................................ 131
Panel ...........................................78
, 122
Interior lights ................................................ 76
Interior mirror .........................................30, 32
JJumper cables ....................................235
, 264
KKeys ..................................................... 19
, 20
LLATCH System .............................................. 55
Leather care ............................................... 225
License plate light .............................. 131
, 277
Lids ........................................................... 149
Emergency unlocking .......................... 257
Lifting/sliding roof ....................................... 172
Light
Flasher ................................ 91
, 131
, 132
Low beam ................................. 131, 132
Sensor for instrument illumination........... 84
Switch ....................................... 131, 132
Light alloy wheels
Inscription .......................................... 241
Load switch-off ........................................... 255
Loading information .................................... 242
Locking ........................................................ 22
Conditions ............................................ 24
Lowering ...................................................... 57
Luggage carrier ................................. 292, 293
Luggage compartment ................................ 150
Lid ..................................................... 148
Lid warning light.................................. 148
Light .................................................. 277
Luggage compartment/
engine compartment lid, warning lights ......... 148
Luggage rack ............................................. 195
MMaintenance ...............................................198
Make-up mirror .............................................41
Maximum permitted engine speeds ....... 16
, 164
Mirrors ............................................ 30
, 32, 60
Anti-glare ..............................................32
Multi-functional steering wheel ........................40
NNavigation ..................................................158
Notes on
Car care .............................................218
Maintenance .......................................198
Number plate light.............................. 131
, 277
OOctane rating ..................................... 209
, 210
Off delay ....................................................131
Oil..............................................................201
Checking level.....................................118
Consumption.........................................16
Level checks.......................................201
Level indicator ....................................118
Pressure...............................................96
Temperature .........................................88
On-board computer .......................................98
Basic settings .....................................120
Language versions ..............................120
On-board literature ..........................................2
Orientation light ............................................76
Outside temperatur indicator..........................95
Index
307
PPaint
Care .................................................. 218
Data................................................... 285
ParkAssistant ............................................... 58
Parking ...................................................... 170
Parking aids ...........................................58
, 60
Parking brake ............................................... 65
Warning light ........................................ 66
Parking light .......................................131, 132
Particle filter............................................... 215
Passenger compartment monitoring............... 26
Plastic parts ............................................... 224
Platform lift ................................................ 244
Porsche Active Suspension Management
(PASM) ......................................................... 75
Porsche Ceramic Composite Brake (PCCB) ....... 8
Porsche Communication Management (PCM) 158
Porsche Stability Management (PSM).............. 72
Information light .................................... 74
Power measurement ..................................... 61
Power measurements ................................. 198
Power steering fluid level.....................214, 291
Power windows.............................. 21
, 28, 176
Practical tips .............................................. 228
RRadiator fan .........................................83
, 200
Radio reception .......................................... 159
Rain sensor ................................................ 133
Range on remaining fuel ........................99, 121
Reading light ........................................76, 278
Rear fog light ............................................. 131Rear lid ......................................................148
Rear seat backrests ......................................39
Rear spoiler ..................................................63
Rear view mirrors................................... 30
, 32
Rear window defogger...................................33
Rear window wiper ......................................134
Recycling .......................................................7
Reduced driving program, Tiptronic ..............170
Relays ........................................................254
Release button............................................165
Remote control .............................................20
Replacement key ..........................................19
Replacing bulbs ..........................................266
Replacing wiper blades................................216
Rims
Diameter ............................................241
Rim width ...........................................241
Rollover Protection System ............................57
Roof Transport System ............... 195
, 292
, 293
Running in ....................................................16
SSafety belts ......................................... 42
, 226
Height adjustment .................................44
Tensioner .............................................42
Warning light.........................................43
Safety compliance sticker............................284
Sealing set .................................................246
Seals .........................................................224
Seat
Adjustment ...........................................34
Heating ................................................38
Memory................................................36
Selector lever .............................................165Selector lever position indicator ............ 93
, 166
Shifting gear .............................................. 164
Side marker light................................ 131, 275
Side vents ................................................. 141
Sliding roof ................................................ 172
Snow chains .............................................. 239
Snow tires ................................................. 238
Socket ...................................................... 254
Spacers ............................................ 249, 252
Spare key .............................................. 19, 20
Speed code letter ...................................... 240
Speed control .............................. 88
, 136
, 137
Speed limit ........................................ 100, 240
Speedometer ............................................... 90
Spoiler ........................................................ 63
Sport Chrono Package
CHRONO stopwatch............................ 104
Sport mode ......................................... 71
Sport mode ........................................... 71, 75
Sports seat ................................................. 34
Sport-type running gear .............................. 298
Stability management system ........................ 72
Starting ....................................................... 81
Starting engine ............................................ 82
Steering lock ............................................... 80
Steering wheel
Adjustment .......................................... 39
Function keys ....................................... 40
Lock.................................................... 81
Rocker switches ................................. 165
Stopping engine ........................................... 83
Stopwatch ................................................. 104
Storage options ......................................... 146
Storing your Porsche.................................. 226
Sun visors ................................................... 41