2003 VOLVO XC70 fuel pressure

2003 VOLVO XC70

pg. 130 Fuel/emissions systems
Fuel system
The fuel system continually compensates for variation in engine load, sp\
eed and temperature. A mass air
flow sensor continuously measures the inducted air and makes rapid adjus\
tments for changes in air
temperature and density, to balance fuel economy, emissions, and engine \
power requirements.
Heated oxygen sensor
This is an emission control system designed to reduce emissions and impr\
ove fuel economy. The heated
oxygen sensor monitors the composition of the exhaust gases leaving the \
engine. The exhaust gas
analysis is fed into an electronic module. This adjusts the air/fuel rat\
io to improve combustion and
reduce the three major pollutants (hydrocarbons, carbon monoxide, and o\
xides of nitrogen (NOx)) via a
three-way catalytic converter.
Crankcase ventilation
The engine is provided with positive crankcase ventilation which prevent\
s crankcase gases from being
released into the atmosphere. Instead, the crankcase gases are routed to\
the intake manifold and
cylinders.
PremAir®
On the surface of the radiator in the engine compartment, there is a spe\
cial coating called PremAir®.
PremAir® works as a catalytic converter, converting most of the ozone\
passing through the radiator into
oxygen, thereby reducing harmful ground-level ozone.
Evaporative control system
The car is equipped with an evaporative control system, which prevents g\
asoline vapor from being
released into the atmosphere.
The system consists of a fuel tank with filler pipe and cap, two rollove\
r valves, a Fill Limit Vent Valve
(FLVV), vapor vent lines, a charcoal canister, a purge line, and a pur\
ge control valve and engine
connections. In addition, there is a pressure sensor connected to the fu\
el tank and a filter-protected
Canister Close Valve (CCV) on the atmospheric side of the canister, fo\
r system diagnosis.
The gasoline vapor is channeled through the rollover valves and the FLVV\
via the vapor vent lines into
the charcoal canister, where it is stored. When the engine is started, t\
he gasoline vapor is drawn from the
file:///K|/ownersdocs/2003/2003_XC70/03xc70_08b.htm (1 of 16)12/30/200\
6 4:18:04 PM

2003 VOLVO XC70
2 0 0 3
VOLVO XC70
Chapter 9 - Specifications


pg. 141 Specifications

Label information 142
Dimensions and weights 143
Engine specifications 144
Transmission specifications 145
Oil/fluid specifications and volumes 146
Fuel system, Distributor ignition system,
Suspension 147
Electrical system 148
Volvo On Call 149

pg. 142 Label information
1 Vehicle Emission Control Information
Your Volvo is designed to meet all applicable emission standards, as evi\
denced by the certification label
on the underside of the hood. For further information regarding these re\
gulations, please consult your
Volvo retailer.
2 Vacuum hose routing
(underside of hood)
3 Loads and Tire Pressures
(on inside of fuel filler door)
file:///K|/ownersdocs/2003/2003_XC70/03xc70_09.htm (1 of 11)12/30/2006\
4:18:05 PM

2003 VOLVO XC70
4 Engine oil level should be between the dipstick marks. The distance between the ma\
rks represents
approx.
1.6 US qts (1.5 liters). See
page 135.
5 Brake fluid - check, without removing the cap, that the level is above the MIN mark\
. Use brake fluid
DOT 4+. See
page 137.
* Engine oil should be checked each time the car is refuelled.

Octane rating, see
page 84.
Tire pressure, see label located on the rear edge of the right front doo\
r.

Bulb Power Socket US no.
1 60 W HB 3 -
2 55 W H 7 -
3 21 W BAU 15d -
4 21 W BA 15s 1156
5 55 W H 1 -
6 5 W W W2.1x9.5d 1157NA
7 21/4
W BA 15d
8 5 W BA 15s 67
file:///K|/ownersdocs/2003/2003_XC70/03xc70_13.htm (3 of 4)12/30/2006 \
4:18:09 PM