2005 Alfa Romeo GT engine

GETTING TO KNOW YOUR CAR
165
6.Multifunction button:
– Radio: call preset stations (from 6 to
1)
– Compact Disc player: select previous
track.
Volume adjustment and Mute
buttons
The buttons for volume adjustment (1)
and (2) and for turning Mute on/off (3)
work in the same way as the corresponding
buttons on the radio.
Radio frequency and sound
source select button
To cyclically select the radio frequencies
and sound sources, briefly and repeatedly
press button (4).
The frequencies/sources available are:
FMI, FMII, FMT, MW, LW, CD*, CDC**.
(*) Only if the Compact Disc is inserted
(**) Only if the CD-Changer is connected
Multifunction buttons (5) and (6)
Multifunction buttons (5) and (6) call the
preset radio stations, or select the next/pre-
vious track when listening to a Compact
Disc.
Press button (5) to select stations from
1 to 6 or to listen to the next track on a CD.
Press button (6) to select stations from
6 to 1 or to listen to the previous track on
a CD.
FUNCTIONS AND
ADJUSTMENTS
(fig. 154)
Switching on
The set is turned on keeping the “ON”
(20) button pressed. If the radio was on
before the engine was turned off, it will turn
on again automatically the next time the en-
gine is started.
If the radio is turned on with the ignition
key at STOP, it will turn off automatically
after about 20 minutes.
With the ignition key at MARthe “ON”
button is always lit to facilitate turning on
the radio.When the radio is turned on again it will
resume with the same settings that were
working before turning off, with the excep-
tion of the volume which, if it was set to
above 20, it is activated at 20.
Turning the radio off
To turn off keep the “ON” button (20)
pressed again.
If the ignition key is turned to STOPwhen
the radio is on, it will turn off automatical-
ly and turn on again the next time the key
is turned to MAR.
Selecting the Radio/Compact
Disc/CD-Changer functions
Briefly and repeatedly pressing the “SRC”
button (14) it is possible to select the fol-
lowing functions in sequence:
– TUNER (Radio)
– CD (only if the Compact Disc is insert-
ed)
– CHANGER (only if the CD-Changer is con-
nected).

GETTING TO KNOW YOUR CAR
198
FUEL CAP
The fuel cap (C-fig. 164) is electrically
controlled. To open it, press button (D-
fig. 165); the flap can be opened only
when the engine is off.
The fuel cap (A-fig. 164), accessible af-
ter opening the lid (C), is fitted with a catch
to prevent losing it (B) which fastens it to the
lid.
When refuelling, hook the cap to the de-
vice on the inner flap, as illustrated.
REFUELLING
PETROL ENGINES
Use only unleaded petrol.
To prevent accidentally filling with leaded
petrol, the diameter of the fuel tank filler
is of such a size as not to accept the noz-
zle of this type of petrol.
The unleaded petrol octane number
(R.O.N.) used shall not be less than 95.
IMPORTANT An inefficient catalyst
leads to harmful emission at the exhaust,
thus environment pollution.
IMPORTANTNever put leaded petrol,
even in small quantity, in the tank, even if
it is an emergency. This would irreversibly
damage the exhaust gas catalyst.
JTD ENGINES
At low temperatures the degree of fluidi-
ty of fuel oil may become insufficient due to
the formation of paraffins leading to mal-
functioning of the fuel system.
Therefore, to avoid inconveniences, sum-
mer and winter fuel oils are normally dis-
tributed depending on the season.
In the event the car is filled with fuel oil
unsuitable for the using temperature, mix
it with DIESEL MIX additive in the propor-
tions stated on the can, firstly putting the
antifreeze in the tank and then the fuel oil.
The vehicle must only be
filled with fuel oil for mo-
tor vehicles, in compliance
with European Specification
EN590. The use of other products
or mixtures may irreparably dam-
age the engine with invalidation of
the warranty due to the damage
caused. In the event of accidental-
ly filling with another type of fuel,
do not start the engine and empty
the tank. If the engine has been run
even for only a very short time, in
addition to the tank, it is also nec-
essary to empty the whole supply
circuit.
fig. 164
A0A0644b

GETTING TO KNOW YOUR CAR
199
ENVIRONMENTAL
PROTECTION
The devices used to reduce petrol engine
emissions are:
– trivalent catalytic converter (catalytic si-
lencer);
– Lambda sensors;
– anti-evaporation system.
If one or more spark plugs are discon-
nected, do not run the engine, even for a
test.
The devices used to reduce diesel fuel en-
gine emissions are:
– oxidising catalyst;
– exhaust gas re-circulation system
(E. G. R.). Do not go near the fuel
filler with naked flames or
lit cigarettes: danger of
fire. Avoid going too near the fuel
filler with your face, to avoid in-
haling harmful vapours.
In the case of need, only
replace the fuel cap with
another genuine one, or the
efficiency of the fuel vapour re-
covery system could be adversely
affected.
Should it be not possible to open the fuel
flap electrically, use the special cable in the
boot (A-fig. 166) to open it manually.
Due to the high tempera-
tures reached during oper-
ation of the catalytic si-
lencer the vehicle should not be
parked over inflammable materials
(grass, dry leaves, pine needles,
etc.).
fig. 165
A0A0643b
fig. 166
A0A0652b
IMPORTANTThe sealing of the tank
may cause light pressurising. A little breath-
ing off, while slackening the cap is ab-
solutely normal.
After refuelling, turn the cap clockwise and
close the flap.
IMPORTANTFor your safety, before
starting the engine, also make sure that the
fuel nozzle is correctly inserted in the fuel
distributor.

CORRECT USE OF THE CAR
200
STARTING PROCEDURE
FOR PETROL VERSIONS
IMPORTANTIt is important never to
press the accelerator before the engine
has started.
1) Make sure the handbrake is engaged.
2) Move the gear lever to neutral.
3) Fully depress the clutch pedal, so that
the starter motor is not forced to crank the
gears.
4) Ensure that the electric systems and
devices, especially if they absorb high
quantities of energy (e.g. heated
rearscreen), are switched off.
5) Turn the ignition key to the AV V
position and release it as soon as the
engine starts.
6) If the engine does not start, return
the key to STOP,then repeat the proce-
dure.
IMPORTANTIf it is difficult to start
the engine do not insist with extended
attempts which may damage the catalyst,
but contact Alfa Romeo Authorised
Services. The ignition switch is fitted with a safety
device which obliges the driver to return
the key to the STOPposition before
repeating the starting operation if the
engine does not start immediately.
Similarly, when the engine is running,
the device prevents the key being moved
from the MARto the AV Vposition.
STARTING
THE ENGINE
IMPORTANTThe car is fitted with an
electronic engine lock device. If the engine
fails to start, see the “Alfa Romeo CODE
system”.
C C
O O
R R
R R
E E
C C
T T
U U
S S
E E
O O
F F
T T
H H
E E
C C
A A
R R
We recommend that dur-
ing the initial period you
do not drive to full vehicle
performance (for example exces-
sive acceleration, long journeys
at top speed, hard braking etc.).
Running the engine in
confined areas is
extremely dangerous. The
engine consumes oxygen and
produces carbon monoxide which
is a highly toxic and lethal gas.
When the engine is
switched off never leave
the ignition key in the
MAR position to prevent point-
less current absorption from
draining the battery.

CORRECT USE OF THE CAR
201
STARTING PROCEDURE
FOR JTD VERSIONS
1) Make sure the handbrake is
engaged.
2) Set the gearshift lever to neutral.
3) Turn the ignition key to MAR.The
reconfigurable multifunction display will
show the
mwarning light.
4) Wait for the
mto turn off, which
takes place sooner, the warmer the
engine. With the engine very warm the
light might stay on for such a short time
as to pass unnoticed.
5) Fully depress the clutch pedal.
6) Turn the ignition key to AV Vas
soon as the
mwarning light has gone
out. Waiting too long, makes the warming
work of the glow plugs useless .IMPORTANTThe electric devices
that absorb a high amount of energy (cli-
mate control, rearscreen heating, etc.) are
cut off automatically during starting.
If the engine does not start at the first
attempt, move the ignition key to STOP
before repeating starting.
If starting is difficult (with the Alfa
Romeo CODE system working properly),
do not insist with prolonged attempts.
Only use an auxiliary battery if the cause
is due to low battery charge. Never use a
battery charger to start the engine.
WARMING THE ENGINE
– Drive off slowly, at medium revs with-
out accelerating abruptly.
– Do not drive at full performance for
the initial kilometres of the journey. Wait
until the engine coolant temperature
reaches 50-60 °C.

Never push, tow or
coast start the vehicle.
This could cause fuel to
flow into the catalyst damaging
it irreversibly.
Remember that the
engine brake and power
steering are not opera-
tional until the engine is started,
therefore, much greater effort
than usual is needed on the brake
pedal and steering wheel.CORRECT USE OF THE CAR
202
For cars with tur-
bocharger in particular,
but for all cars in general,
sharp accelerating should be
avoided before switching the
engine off.
A “kick” on the accelerator
serves no purpose, consumes fuel
pointlessly and may cause seri-
ous damage to the turbocharger
impeller bearings.EMERGENCY STARTING
If the Alfa Romeo CODE system does not
recognise the code transmitted by the igni-
tion key (warning light
Yon the instru-
ment cluster glowing on steadily) emer-
gency starting may be carried out using
the code of the CODE card.
For the correct procedure see the chapter
“In an emergency”.
IMPORTANTIf the engine turns off
with the vehicle on the move, the next
time it is started, the Alfa Romeo CODE
warning light may turn on(
Y). In this
case, check that switching off and starting
the engine again with the vehicle station-
ary, the warning light stays off. If not, con-
tact Alfa Romeo Authorised Services.
ENGINE SWITCHING OFF
– Release the accelerator pedal and wait
until the engine reaches idle speed.
– Turn the ignition key to the STOP
position and switch off the engine.
IMPORTANTAfter a tiring journey it is
advisable to let the engine “get its breath
back” allowing it to idle a while to lower
the temperature in the engine compart-
ment.

Never leave children
unattended in the vehicle.
Always remove the igni-
tion key when leaving the vehicle
and take it with you.To avoid useless con-
sumption of power and
possible draining of the
battery, never leave the ignition
key in the MAR position when
the engine is not running.
CORRECT USE OF THE CAR
203
PARKING
When the vehicle is parked, proceed as
follows:
– Switch off the engine.
– Engage the handbrake.
– Engage first gear if the vehicle is faced
uphill or reverse if the vehicle is facing
downhill.
– Turn the front wheels so that the vehi-
cle will immediately come to a halt if the
handbrake slips.
REDUCING RUNNING
COSTS AND
ENVIRONMENT
POLLUTION
By following a few simple guidelines, it
is possible to save vehicle running costs
and reduce harmful emissions.
GENERAL CONSIDERATIONS
Vehicle maintenance
To take care of the car maintenance
have the checks and adjustments carried
out in accordance with the “Scheduled
Maintenance Programme”.
Tyres
Check the pressure of the tyres routinely
at an interval of no more than 4 weeks: if
the pressure is too low consumption levels
increase as resistance to rolling is higher.
Useless loads
Never travel with an overload in the
boot. The weight of the vehicle (especial-
ly in urban traffic), and its geometry heav-
ily affect consumption levels and stability.Electric services
Use electric devices only for the amount
of time needed. Rearscreen heating, addi-
tional headlights, windscreen wipers and
heater fan need a considerable amount of
energy, therefore increasing the require-
ment of current increases fuel consump-
tion (up to +25% in the urban cycle).
Climate control system
The climate control system is a further
load bearing heavily on the engine induc-
ing higher consumption levels(up to
+20% on average). Outside temperature
permitting, preferably use the air vents.
Aerodynamic items
The use of non-certified aerodynamic
items may adversely affect air drag and
consumption levels.

CORRECT USE OF THE CAR
204
CONDITIONS OF USE
Cold starting
Short journeys and frequent cold starts
do not allow the engine to reach optimum
operating temperature. This results in a
significant increase in consumption levels
(from +15 to +30% on the urban cycle)
and emission of harmful substances.
Traffic situations and road
conditions
Rather high consumption levels are tied
to situations with heavy traffic, for exam-
ple in queues with frequent use of the
lower gears or in cities with many traffic
lights. Also winding mounting roads and
rough road surfaces adversely affect con-
sumption.
Stopping in the traffic
During prolonged stops (e.g. level cross-
ings) it is advisable to switch the engine
off.
DRIVING STYLE
Starting
Do not warm the engine with the car at
a standstill or at idle or high speed: under
these conditions the engine warms up
much more slowly, increasing electrical
consumption and emissions. It is therefore
advisable to move off immediately, slow-
ly, avoiding high speeds. This way the
engine will warm faster.
Pointless manoeuvres
Avoid accelerating when waiting at traf-
fic lights or before switching off the
engine. This and also double declutching is
absolutely pointless on modern cars and
also increase consumption and pollution.
Gearshifting
As soon as the conditions of the traffic
and road allow, use a higher gear.
Using a low gear to obtain brilliant per-
formance increases consumption.
In the same way improper use of a high
gear increases consumption, emissions
and engine wear.Top speed
Fuel consumption considerably increases
with speed. Maintain an even as possible
speed, avoiding superfluous braking and
accelerating, which cost in terms of both
fuel and emissions.
Acceleration
Accelerating heavily taking the engine to
a high speed has a considerably adverse
effect on consumption and emission lev-
els; it is wise to accelerate gradually and
not exceed the maximum torque.