2007 Alfa Romeo 156 fuel pump

GETTING TO KNOW YOUR CAR
185
REFUELLING PETROL ENGINESIn order to prevent the vehicle being filled
with leaded petrol, the diameter of the filler
neck is smaller than the nozzle used on
pumps delivering leaded petrol.At low temperatures, the degree of fluid-
ity of fuel oil may become insufficient due
to the formation of paraffins leading to dan-
ger of clogging the fuel oil filter.
Therefore, to avoid inconveniences, sum-
mer and winter fuel oils are normally dis-
tributed depending on the season.
However, during the intermediate season,
characterised by a large difference between
outside temperatures (0°C to 15°C), the
quality of the fuel oil distributed to the
pumps may not be adequate.
In this case, and above all if the use of the
car involves stopping and then starting again
at low temperatures (e.g. mountains),
make sure the car is filled with winter fuel
oil; if not, you are advised to mix the fuel
oil with a DIESEL MIXadditive in the pro-
portions stated on the can, pouring first the
antifreeze and then the fuel oil into the tank.
TheDIESEL MIXantifreeze should be
mixed with the fuel oil before reactions due
to cold take place. Adding it too late will
prove pointless. The anti-pollution devices
present on the vehicle im-
pose the use of four-star
unleaded fuel with an octane num-
ber (R.O.N.) above 95.
Under no circumstances
should conventional leaded
petrol be used, as this
would irreparably damage the cat-
alyst. If the tank is accidentally
filled with leaded fuel, even in
minute quantities, DO NOT START
THE ENGINE. Do not attempt to di-
lute the petrol with lead free fuel.
Drain the entire fuel circuit and
tank.
If the catalyst is not
working properly, harmful
emissions reach the ex-
haust, resulting in environment pol-
lution.The car must be refuelled
only with fuel oil for motor
vehicles, in conformity with
European specification EN590. The
use of other products or mixtures
may damage the engine irrepara-
bly, resulting in invalidation of the
warranty for the damage caused.
If the tank is accidentally filled
with another type of fuel, do not
start the engine but drain the tank.
If the engine has been run even for
a brief period, the tank must be
drained together with the entire
fuel circuit.
JTD ENGINES

GETTING TO KNOW YOUR CAR
186
FUEL CAP
(fig. 176)
The fuel flap is released from inside the
car, raising the front part of the lever (A).
The fuel cap (A-fig. 177) has a catch
to prevent misplacing it (B) that fastens it
to the flap (C).
WARNINGThe fuel tank is sealed her-
metically and pressure may build up inside.
Any noise of rushing air when the cap is re-
moved is perfectly normal.
fig. 176
A0B0044m
fig. 177
A0B0045m
In case of need, replace
the fuel cap only with an
original one; otherwise,
the efficiency of the petrol vapour
recovery system could be badly af-
fected.
EMERGENCY FLAP OPENING
DEVICEIf the lever (A-fig. 176) fails to work,
it is still possible to open the flap by pulling
the cord (A-fig. 178) on the right-hand
side of the luggage compartment.fig. 178
A0B0388m
WARNINGFor your safety, make sure
that the fuelling pump nozzle is inserted cor-
rectly into the housing, before starting the
engine.
Do not get near the fuel
filler with naked flames or
lit cigarettes: danger of fire. Also
avoid going too near the filler with
the face to avoid inhaling harmful
vapours.
WARNING

IN AN EMERGENCY
237
Remove the cover (A-fig. 73) to
gain access to the following relays/fuses
(fig. 74):
A.Engine radiator cooling fan 2
ndspeed
relay (T.SPARK versions).
B.Engine radiator cooling fan 1
stspeed re-
lay.
C.Fuel pump relay
D.Electronic injection relay
E.Climate control compressor relay
F.Timing variator relay (1.6 T.SPARK on-
ly) or engine radiator fan 2
ndspeed relay
(only 2.5 V6 24V, JTD and JTD 16V Multi-
jet versions).
G.Fuel oil heater relay (only Diesel ver-
sions).For JTD 20v Multijet version refer to
fig. 75For Diesel versions, depending on the op-
tions installed, there is a second bracket fas-
tened to the engine compartment rear bulk-
head for the following fuses (fig. 76):
A.MAXI-FUSE 30A: additional passenger
compartment heater 2
ndlevel relay.
B.MAXI-FUSE 30A: additional passenger
compartment heater 1stlevel relay.
WARNINGStrictly observe the specified
fuse ampere value: in case of doubt, con-
tact Alfa Romeo Authorized Services.
fig. 74
A0B0183m
fig. 76
A0B0619m
fig. 75
A0B0618m

Fuel oil heater (JTD versions, JTD 16V Multijet)Services switched off with startingBattery power supply for Alfa Romeo CODE/Injection system(+15) key-controlled service supply (ignition switch)General service supply (petrol versions)General service supply (diesel versions)General service supplyAdditional heater (diesel version only)Oil pump supply (Selespeed versions only)
Selespeed gearbox(2.0 JTS version)
Automatic gearbox(2.5 V6 24V version)(*) Specific components and values depending on the version/market. If in doubt, especially for the replacement of fuses which protect safety circuits
and/or systems (Air bag, ABS, etc.), you are recommended to contact Alfa Romeo Authorized Services, also to locate the cause of the fuse tripping.
IN AN EMERGENCY
241
74
71
71
68
68
68
68
68
68
68
68
68
68 25A
7.5A
7.5A
30A
80A
80A
70A
70A
30A
30A
20A
40A
20A H
1
12
2
4
1
3
10
10
7
8
7
8
SERVICES FUSE AMPERES FIGURE