2005 Alfa Romeo GT engine

VEHICLE MAINTENANCE
260
DIESEL FUEL FILTER
(JTD16Vversions)
DRAINING CONDENSATION
WATER
The presence of water in
the supply circuit may
cause serious damage to
the entire injection system and
cause irregular running of the
engine. If the
cwarning light
turns on together with the mes-
sage on the reconfigurable multi-
function display, contact Alfa
Romeo Authorised Services as
soon as possible to have the sys-
tem relieved.
AIR CLEANER
The air cleaner is connected to the tem-
perature and air flow sensors which send
to the control unit the electric signals
needed for correct operation of the injec-
tion and ignition system.
It must therefore always be in perfect
conditions, to ensure correct operation of
the engine, low consumption and exhaust
emission levels.
If the operations con-
cerning cleaner replace-
ment described below are
not carried out correctly and with
the due precautions, they may
compromise the travelling safety
of the vehicle. You are recom-
mended to have this operation
carried out by Alfa Romeo
Authorised Services.
If the car is habitually
used in dusty areas, the
cleaner should be replaced
at shorter intervals than those
specified in the Programmed
Maintenance Schedule.
Any attempt to clean the
cleaner may damage it,
leading to serious engine
damage.

VEHICLE MAINTENANCE
263
2.close the driver's window completely
keepingthe button pressedfor at
least 3 seconds after window closing (win-
dow upper stop);
3.repeat the same procedure (point 1
and 2) also for the front passenger's win-
dow;
4.check for proper initialisation by oper-
ating the windows automatically.
USEFUL HINTS TO EXTEND
THE LIFE OF YOUR BATTERY
To avoid rapidly draining the battery and
ensure that it continues to work correctly,
the following should be noted:
– The terminals must always be firmly
tightened.
– Within reason, avoid using electrical de-
vices for a long time when the engine is
switched off (radio, hazard warning lights,
parking lights, etc.). IMPORTANTIf the battery is kept
with a charge of below 50% it is damaged
by sulphation, its starting capability is
reduced and it is also more subject to the
possibility of freezing (this may occur
already at -10 °C). In the event of a pro-
longed inactivity, refer to the paragraph
“Vehicle inactivity”, in the chapter
“Correct use of the car”.
CHANGING THE BATTERY
When changing the battery it should be
replaced with another original one with
the same characteristics. If it is replaced
by a battery with different characteristics,
the maintenance intervals given in the
Scheduled Maintenance Programme in
this chapter are no longer valid and for
maintenance it will be necessary to follow
the battery Manufacturer’s instructions.
IMPORTANTAfter control unit power
disconnection (battery replacement or dis-
connection and replacement of power win-
dow control unit protection fuses), the
power window automatism shall be
restored.
Proceed as follows with doors closed:
1.open the driver's window completely
keepingthe button pressedfor at
least 3 seconds after window opening
(window lower stop);– When the vehicle is parked in a garage,
ensure that the doors, bonnet, boot and in-
ner lids are closed properly so that the lights
do not stay on permanently.
– Before carrying out any work on the
electric system, disconnect the negative ca-
ble from the battery.
– If after buying the car, you wish to in-
stall electric accessories which require a per-
manent electric supply (alarm, voice feature,
radionavigator with satellite antitheft func-
tion etc.) or accessories that burden the elec-
tric system, contact Alfa Romeo Authorised
Services whose qualified personnel, in ad-
dition to suggesting the most suitable de-
vices belonging to Lineaccessori Alfa Romeo,
will evaluate the overall electric absorption,
checking whether the vehicle’s electric sys-
tem is capable of withstanding the load re-
quired, or whether it should be integrated
with a more powerful battery. In fact, as
some of these devices continue absorbing
energy even when the ignition key is off (car
stationary, engine off), they gradually drain
the battery.

VEHICLE MAINTENANCE
264
Incorrect pressure causes abnormal tyre
wear:
(A): Normal pressure: tread evenly
worn.
(B): Low pressure: tread particularly
worn at the edges.
(C): High pressure: tread particularly
worn in the centre.
Tyres should be changed when the tread
thickness is reduced to 1,6 mm.
In any case follow local regulations.
You are also reminded that services with
high current absorption switched on by the
user, such as for example: baby bottle
warmers, vacuum cleaner, mobile phone,
mini fridge, etc., quicken the battery
draining processif they are turned on
with the engine off or running at idle
speed.
IMPORTANT When installing addi-
tional systems on the vehicle, bear in
mind that improper branches on connec-
tions of the vehicle wiring are dangerous,
particularly if safety devices are involved.
WHEELS AND TYRES
TYRE PRESSURE
Check the tyre pressure of every wheel,
including the spare, every two weeks and
before a long journey. The pressure should
be checked with the tyre rested and cold.
It is normal for the pressure to increase
when the car is in use; for the correct tyre
inflation pressure, see “Wheels” in the
“Technical Specifications” chapter.
Battery
60 Ah
70 AhMaximum permissible
loadless absorption
36 mA
42 mA
The maximum absorption of all the
accessories (standard and fitted after-
wards) should be 0,6 mA x Ah (of the bat-
tery), as shown in the following table:
fig. 14
A0A0225b

VEHICLE MAINTENANCE
267
HEADLIGHT WASHERS
(fig.17)
Regularly check that the spray jets are
intact and clean.
If it is necessary to direct the jet, contact
an Alfa Romeo Authorised Service
BODYWORK
PROTECTION FROM
ATMOSPHERIC AGENTS
The main causes of corrosion are:
– atmospheric pollution
– salty air and humidity (coastal areas,
or hot humid climates)
– seasonal environment conditions.
Not to be underestimated is also the
abrasive action of wind-borne atmospheric
dust and sand and mud and gravel raised
by other vehicles.
On your car Alfa Romeo has implement-
ed the best manufacturing technologies to
effectively protect the bodywork against
corrosion.
fig. 17
A0A0704b
These include:
– Painting products and systems which
give the vehicle particular resistance to
corrosion and abrasion.
– Use of galvanised (or pretreated)
steel sheets, with high resistance to corro-
sion.
– Spraying of the underbody, engine
compartment, wheel arches and other
parts with highly protective wax products.
– Spraying of plastic parts, with a pro-
tective function, in the more exposed
points: underdoor, inner wheel arch lin-
ings, etc.
– Use of “open” boxed sections to pre-
vent condensation and pockets of mois-
ture from triggering rust inside.
VEHICLE EXTERIOR AND
UNDERBODY WARRANTY
Alfa GTis guaranteed against perfo-
ration due to rust of any original element
of the structure or body. For the general
terms of this warranty, refer to the
Warrantly Booklet.

VEHICLE MAINTENANCE
269
Engine compartment
At the end of the winter the engine com-
partment should be carefully washed,
without directing the jet against electronic
control units. Contact a specialised work-
shop to have this done.
Detergents cause water
pollution. Therefore the en-
gine compartment should
be washed in areas equipped for
collecting and purifying the liquid
used in the washing process.
IMPORTANTThe vehicle should be
washed with the engine cold and the igni-
tion key at STOP. After washing make sure
that the various protections (e.g. rubber
caps and various covers) have not been
damaged or removed. Windows
Use specific products to clean the win-
dows. Use clean cloths to avoid scratching
or altering the transparency of the glass.
IMPORTANTThe inside of the
rearscreen should be wiped gently with a
cloth in the direction of the filaments to
avoid damaging the heating device.
Front headlights
IMPORTANTDo not use aromatic sub-
stances (e.g. petroleum) or ketones (e.g.
acetone) to clean the front headlight plas-
tic transparents.
Never use inflammable
products like fuel oil ether
or rectified petrol for
cleaning inside the car. The elec-
trostatic charges generated when
rubbing to clean may cause fire.
INTERIOR FITTINGS
Periodically check that water is not
trapped under the mats (due to water drip-
ping off shoes, umbrellas, etc.) which
could cause oxidisation on the sheet metal.
CLEANING SEATS AND FABRIC
AND VELVET PARTS
– Use a soft brush or a vacuum cleaner
to remove dust. Velvet is cleaned better if
the brush is moistened.
– Rub the seat with a sponge moistened
with a solution of water and neutral deter-
gent.

TECHNICAL SPECIFICATIONS
271
IDENTIFICATION LABEL
This (fig. 2) is to be found on the front
crossmember of the engine compartment.
It contains the following information:
(A)Space for details of national ho-
mologation
(B)Space for punching the consecutive
chassis number
(C)Space available for maximum
weights authorised by various na-
tional regulations
(D)Space for version and any supple-
mentary indications to those specified(E)Space for smoke coefficient (JTD ver-
sions)
(F)Space for punching manufacturer’s
name.
BODYWORK LABEL
This is located in the engine bay, to one side
of the upper right shock absorber (fig. 3)
and contains:
– Type of vehicle: ZAR 937.000
– Manufacturer’s serial number (chassis
number).
IDENTIFICATION DATA
You are advised to note the identification
codes. The identification datastamped and
given on the labels and their position are
the following (fig. 1):
1- Identification label
2- Body label
3- Bodywork paint identification label
4- Engine label.
T T
E E
C C
H H
N N
I I
C C
A A
L L
S S
P P
E E
C C
I I
F F
I I
C C
A A
T T
I I
O O
N N
S S
fig. 1
A0A0654b
fig. 2
A0A0246b
fig. 3
A0A0247b

TECHNICAL SPECIFICATIONS
272
BODYWORK PAINT
IDENTIFICATION LABEL
The label (fig. 4) is on the inner left edge
of the tailgate. It contains the following in-
formation:
A. Paint manufacturer.
B. Name of colour.
C. Colour code.
D.Indication on the type of product to be
used for touching-up.
ENGINE STAMP
The engine marking is stamped on the
gearbox side of the crankcase, in corre-
spondence with the exhaust manifold.
ENGINE CODES - BODY VERSIONS
fig. 4
A0A0651b
Engine code Body versions
1.8 T. SPARKAR322005 937CXR1A 26
2.0 JTS937A1000 937CXH1A 22
2.0 JTS
932A2000 937CXHT1A 29
(For specific markets)
2.0 JTS Selespeed937A1000 937CXH11 23
3.2V6936A000 937CXP1B 25
JTD16V937A5000 937CXN1B 24B

TECHNICAL SPECIFICATIONS
273
ENGINE
2.0 JTS
2.0 JTS
Selespeed
937A1000
Otto
4 in line
83 x 91
1970
11.5 : 1
121
165
6400
206
21
3250
NGK PFR6B
NGK BKR6EKPA
Unleaded
premium petrol
95 RON2.0 JTS (**)
932A2000
Otto
4 in line
83 x 91
1970
11.5 : 1
119
163
6400
201
22
3250
NGK PFR6B
NGK BKR6EKPA
Unleaded
premium petrol
95 RONJTD16V
937A5000
Diesel
4 in line
82 x 90.4
1910
17.5 : 1
110
150
4000
305
31
2000
Diesel for motor
vehicles
(Specification
EN 590) 3.2
V6
936A000
Otto
6 at V of 60°
93 x 78
3179
10 : 1
176.5
240
6200
300
30,6
4800
NGK PFR6B
Unleaded
premium petrol
95 RON
(*) There are two different spark plugs for each cylinder, one per type
(**) For versions/markets where applicable.1.8 T. SPARK
AR32205
Otto
4 in line
82.7
1747
11.5 : 1
103
140
6500
163
16.6
3900
NGK PFR6B+
NGK PMR7A
NGK BKR6EKPA+
NGK PMR7A
Unleaded
premium petrol
95 RONCode type
Cycle
Number and position of cylinders
Piston bore and stroke mm
Total displacement cm3
Compression ratio
Maximum horsepower (EEC):
kW
HP
at rpm
Maximum torque (EEC):
Nm
kgm
at rpm
Spark plugs (*)
Fuel