2004 PORSCHE 911 GT3 catalytic converter

Environmentally friendlyvehicles

Modern environmental technologyensurescom-
pliance withallemission lawsapplicable world-
wide.

These havethefollowing advantages:

- Rapid operational readinessofthe catalytic
converters ensureslowemissions, evenin
short-trip operation.
- Reliable operation andgood emission control
over along useful life.

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Please refertothe chapter "FUELECONOMY"
on page 120.
Recycling
-for aPorsche, thisisvirtually
an academic question

More thantwo-thirds ofall Porsches everbuiltare
still running.

Just incase recycling isever necessary, we
take thefollowing precautionary measures:

- Identification ofall materials.
- Use ofrecyclable materials.
- Reusable components designedforsimple
removal.
- These reasons resultinafurther increase in
the recycling ratewhich iscurrently 80per
cent.
Emission
controlisbuilt in

Innovative enginetechnology combineshighen-
gine performance andenvironmental compati-
bility.
The engine diagnosis systemelectronically moni-
tors thecomponents andsystems thataffect ex-
haust gases.
This continuous monitoringandfault storage en-
ables swift, reliable diagnosis andfault detection.
Any fault messages areindicated tothe driver by
the "Check Engine" warning lightandtheon-board
computer.

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Please refertothe chapter "WARNINGS INTHE
INSTRUMENT PANELANDINTHE ON-BOARD
COMPUTER" onpage 75.

CheckEngine
Warning Light

The warning lightinthe instrument panelcomes
on when theignition isfirst turned onand remains
on briefly asabulb check. Ifthe light does not
come on,have thebulb replaced promptly.
If the warning lightsinthe instrument panelandon-
board computer comeonand remain onwhile
driving, itsuggests:
- apotential enginecontrol problem andthe
need forsystem serviceor
- animproperly fastenedtankcapor
- refuelling withengine running.
Although thevehicle isusually driveable andwill
not require towing, seeyour dealer forservice as
soon aspossible.
Controls, Instruments
A

Caution!
If the Check engine lightinthe instrument
panel isflashing, severecatalytic converter
damage andpower losswillsoon occur.
Prolonged drivingwiththeCheck engine
light oncould cause damage tothe emission
control system. Italso could affect fuelecon-
omy anddriveability.

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Have thefault remedied atthe nearest autho-
rized Porsche dealerimmediately.

1.
Important:
Stoptheengine andswitch offthe
FuelRecommendations

ignition.

Refuelling
Fuel tank capacity islisted under "Capacities".
Porsche doesnotrecommend theuse offuel ad-
ditives.

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Please observe thechapter "CAPACITIES" on
Page 185.
Maintenance, CarCare 2.
Slowly unscrew thetank cap.
Hang thetank caponthe plastic strapofthe
filler flap.
3. Insert fuel-hose nozzlefullyintothefiller neck
with thehandle ofthe fuel-hose nozzlefacing
down.
4. Donot add further fuelonce thecorrectly op-
erated automatic fuel-hosenozzlehas
switched off.
Fuel could sprayorcould runover inwarm
temperatures.
5. Replace thetank capimmediately after
refuelling andturn ituntil youhear itand feel it
engage.

If you lose thetank cap,youmust replace it
only with anoriginal parttoreduce the
possibility ofafire inthe event ofacollision.
Your
Porsche isequipped withcatalytic convert-
ers and must use
UNLEADED FUELONLY.

Your engine isdesigned toprovide optimum per-
formance andfuel economy usingunleaded premi-
um fuel with anoctane ratingof
98 RON
(93 CLC orAKI).
Porsche therefore recom-
mends theuse ofthese fuelsinyour vehicle.
Porsche alsorecognizes thatthese fuelsmaynot
always beavailable. Beassured thatyour vehicle
will operate properly onunleaded premiumfuels
with octane numbers ofatleast
95RON
(90 CLC orAKI),
sincetheengine's "Electronic
Oktane
™
knock control" willadapt theignition tim-
ing, ifnecessary.

The useofUNLEADED FUELONLY is
critically important tothe lifeofthe catalytic
converters. Depositsfromleaded fuelswill
ruin theconverters andmake itineffective as
an emission controldevice.

Cars withcatalytic converters haveasmaller fuel
tank opening, andgas station pumps havesmaller
nozzles. Thiswillprevent accidental pumpingof
leaded fuelintocars withcatalytic converters.

Emission ControlSystem

In the interest ofclean air
Pollution ofour environment hasbecome aprob-
lem that isof increasing concerntoall ofus. We
urge youtojoin us
in
our efforts forcleaner airin
controlling thepollutants emittedfromtheauto-
mobile.
Porsche hasdeveloped anemission controlsys-
tem that controls orreduces thosepartsofthe
emission thatcanbeharmful toour environment.
Your Porsche isequipped withsuch asystem.
Porsche warrants theEmission ControlSystem in
your newcarunder theterms andconditions set
forth inthe Warranty Booklet.
You, asthe owner ofthe vehicle, havethe
responsibility toprovide regularmaintenance ser-
vice forthe vehicle andtokeep arecord ofall
maintenance workperformed. Tofacilitate record
keeping, havetheservice performed byautho-
rized Porsche dealers.TheyhavePorsche trained
technicians andspecial toolstoprovide fastand
efficient service.
Maintenance, CarCare
To
assure efficient operation ofthe Emission
Control System:

~ Have yourvehicle maintained properlyandin
accordance withtherecommendations de-
scribed inyour Maintenance Booklet.
Lack ofproper maintenance, aswell asim-
proper useofthe vehicle, willimpair thefunc-
tion ofthe emission controlsystem andcould
lead todamage.
~ Donot alter orremove anycomponent ofthe
emission controlsystem.
~ Donot alter orremove anydevice, suchas
heat shields, switches, ignitionwires,valves,
etc., which aredesigned toprotect yourvehi-
cle's emission controlsystem.
In addition toserious enginedamage, thiscan
result inafire
if
excess rawfuel reaches the
exhaust system.
~ Donot continue tooperate yourvehicle ifyou
detect engine misfireorother unusual operat-
ing conditions. Parking

A
Warning!
Danger offire.

~ Donot park oroperate thevehicle inareas
where thehotexhaust systemmaycome in
contact withdrygrass, brush,fuelspill oroth-
er flammable material.

~ If
your carcatches onfire forany reason, call
the fire department.
Do not endanger yourlifebyattempting toput
out the fire.
Undercoating

A
Warning!
Danger offire and serious personal injuries.

~ Donot apply additional undercoating orrust-
proofing onornear theexhaust manifold,
exhaust pipes,catalytic converters orheat
shields. Duringdriving thesubstance usedfor
undercoating couldoverheat andignite.

HowEmission ControlWorks

When anautomobile engineisrunning, ituses en-
ergy generated throughthecombustion ofamix-
ture ofair and fuel. Depending onwhether acar is
driven fastorslowly orwhether theengine iscold
or hot, some ofthe fuel (hydrocarbons) maynot
be burned completely, butmay bedischarged into
the engine crankcase orexhaust system.Additon-
al hydrocarbons mayenter theatmosphere
through evaporation offuel from thefuel tank.
These hydrocarbons
(He),
when released intothe
air, contribute toundesirable pollution.
In addition, carbonmonoxide (CO)andoxides of
nitrogen (NOx)contribute toengine emissions.
They, too,areformed duringthecombustion pro-
cess anddischarged intotheexhaust system.
To reduce thesepollutants, yourPorsche is
equipped withaprecisely calibrated fuelinjection
system toassure afinely balanced air/fuelmixture
under alloperating conditions.
Oxygen
sensor

The oxygen sensor, installed inthe exhaust pipe
continuously sensestheoxygen content ofthe
exhaust andsignals theinformation toan electron-
ic control unit.Thecontrol unitcorrects theair/
fuel ratio, sothe engine always receives anaccu-
rately metered air/fuelmixture.

Crankcase ventilation

Through crankcase ventilation, undesirable emis-
sions fromtheengine crankcase arenotpermit-
ted toreach theoutside atmosphere. Theseemis-
sions arerecirculated fromthecrankcase tothe
air intake system. Fromheretheemissions mix
with theintake airand arelater burned inthe en-
gine.

Catalytic converters

The catalytic converters areefficient "clean-up"
devices builtintotheexhaust systemofthe vehi-
cle. The catalytic converters burntheundesirable
pollutants inthe exhaust gasbefore itis released
into theatmosphere.

The exclusive useofunleaded fueliscritical-
ly important forthe lifeofthe catalytic con-
verters. Therefore, onlyunleaded fuelmust
be used. The
catalytic converters willbedamaged by:

- push ortow starting thevehicle
- misfiring ofthe engine
- turning offthe ignition whilethevehicle ismov-
ing or
- driving untilthefuel tank iscompletely empty
- byother unusual operating conditions.

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Donot continue tooperate yourvehicle under
these conditions, sincerawfuelmight reach
the catalytic converters. Thiscould result in
overheating ofthe converters. Federallawpro-
hibits useofleaded fuelinthis car.
Maintenance, CarCare
125

A
Warning!
Danger offire and serious personal injuries.

t>
Donot apply additional undercoating orrust-
proofing onornear theexhaust manifold, ex-
haust pipes, catalytic converters orheat
shields. Duringdriving thesubstance usedfor
undercoating couldoverheat andignite.

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Before applying freshunderseal, carefullyre-
move deposits ordirt and grease. Onceithas
dried, thenew undercoating compoundforms
a tough protective coatingwhichprovides effi-
cient rust-proofing ofthe floor panels andcom-
ponents.

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Always applyafresh coating ofsuitable preser-
vative tounprotected areasaftercleaning the
underside ofthe body, thetransmission, the
engine orcarrying outrepairs tounder-body,
engine ortransmission components.
Effective rust-proofing isparticularly important
during thecold weather season.
If
your carisdriv-
en frequently inareas where salthas been spread
on the roads, thewhole engine compartment
should becleaned thoroughly afterthewinter to
prevent saltfrom causing anylasting damage. A
full under-body washshould alsobeperformed at
the same time.

134
Maintenance, CarCare
Door,
roof,lidand window seals

t>
Wash dirt(e.g. abrasion, dust,roadsalts) from
all seals regularly usingwarm soapy water. Do
not use anychemical cleaningagentsorsol-
vents.
When thereisafrost hazard, theouter doorseals
and thefront andrear lidseals canbeprotected
against freezing intoplace byasuitable careprod-
uct.

In order toprevent damage tothe anti-
friction coating, theinner doorseals must
not betreated withcare products.
Headlights,
lights,interior andexterior

plastic parts

t>
Use
only
clean water andalittle dishwashing
detergent toclean lightlenses, plastichead-
light lenses, plasticpartsandsurfaces.
Do not clean whendry.
Use asoft sponge orasoft, lint-free cloth.Gen-
tly wipe thesurface withoutapplying toomuch
pressure.
The Porsche insidewindow cleanerisalso suit-
able forcleaning plasticsurfaces. Followthe
cleaning instructions onthe container.
Never useother chemical cleanersor
solvents.

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Rinse cleaned surfaces withclear water.

Emergency StartingwithJumper
Cables

If the battery isdischarged, e.g.inwinter orafter
the car has been parked foralong time, thebat-
tery ofanother carcan beused forstarting with
the help ofjumper cables.
Make surethevoltage ofboth batteries isthe
same.
The capacity (Ampere hours,Ah)ofthe booster
battery mustnotbesubstantially lessthan thatof
the discharged battery.
The discharged batterymustbecorrectly con-
nected tothe vehicle's electrical system.

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Please observe thechapter "BATTERY" on
Page 155.

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Please observe thechapter "EMERGENCY UN-
LOCKING OFTHE LUGGAGE COMPARTMENT
LID AND ENGINE COMPARTMENT LID"on
Page 154.

Note

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Donot trytostart thecarbypushing ortow-
ing. Damage tothe catalytic converters and
other components ofthe car may result.

160
PracticalTips,Emergency Service
A

Warning!
Risk ofdamage andserious personal injury
due toshort circuit.

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Use only jumper cablesofadequate diameter
cross-section andfitted withcompletely insu-
lated alligator clips.

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Follow allwarnings andinstructions ofthe
jumper cablemanufacturer.

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When connecting jumpercables, makesure
that they cannot getcaught inany moving
parts inthe engine compartment.
The jumper cablesmustbelong enough so
that neither vehicles norcables touchanother.

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The vehicles mustnotbeincontact, otherwise
current mightflowassoon asthe positive ter-
minals areconnected.

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The cable clamps mustnotbeallowed tocon-
tact each other whenoneendofthe jumper ca-
bles areconnected toabattery.

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Ensure thattools orconductive jewellery
(rings, chains, watchstraps) donot come into
contact withliveparts ofthe vehicle.

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Improper hook-upofjumper cablescanruin
the alternator.
Danger
ofcaustic burns.

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Donot lean over thebattery.

Danger ofgas explosion.

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Improper useofbooster batterytostart a
vehicle maycause anexplosion, resultingin
severe personal injuries.

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Keep sources ofignition awayfromthebat-
tery, e.g.open flame, burning cigarettes or
sparking duetocable contact orwelding work.

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Adischarged batterycanfreeze evenat

WFj-lOoC.

Before connecting Jumpercables, afrozen bat-
tery must bethawed out.

Index

A

ABS (antilock brakesystem) 44,45,54,56
Warning light 54,56
Acoustic warningsignal. 69
Aerodynamic components 9
Air compressor 100
Air conditioning system 90
Air distribution 88,90
Air filter 128
Airbag 38,39
Switching offpassenger airbag 36
Warning light 54,56
Alarm System 24,107
Alcantara 136
Antenna 107,131
Antifreeze 113
Antilock brakesystem (ABS) 44,45
Ashtray 94
Assembly aidsforwheel changes 150
Audio operation 105,106
Auto-button airconditioning system 90,91
Automatic
Airconditioning 90
Car washes 131
Door locking 21
Headlight adjustment... 82
Locking retractor 34
Speed control 54,56,58,86, 87
Average consumption 68
Average speed 68,72

190
Index
B

Backrest Adjustment 30
Release 30,31
Battery 100,155
Warning light.. 54,56,58
Before driving off 14,15
Belt tensioner 32
Belts 32,136
Warning light... 54,56
Blower adjustment 88,90, 93
Brakes 40,119
Distribution warninglight... 54,56
Fluid 119,185
Fluid level 54,56
Fluid warning light 119
Lights 165,171
Pad wear warning light 54,56
Pads 16,43
Parking brakewarning light... 54,56
Break inhints 16
Bulbs Chart 163
Replacing 162

C

Canholder 95
Capacities, overview 185
Car care 130
Car washes 131Cassette
tape
Holder 97
Player
l
06
Catalytic converters 125
Cautions 112,140
Central locking 22
emergency operation 23
Changing wheels 150
Check engine
Warning light.. 54,56,66
Child restraint
Anchorages ,35
Switching offpassenger airbag 37
Syste m 36
Cigarette lighter 94
Circulating airbutton 91
Circulating airsetting 89,91
Clock 54,56,64
Clothes hook 96
Clutch pedal .40
Compact disc
Changer 106
Holder 97
Player
l
06
Compartment monitoring 24
Compressor 91,92
Coolant 62,113
Level 113
Temperature gauge 62
Warning light 62
Cooling system 62,113