2004 FORD E SERIES Natural Gas Vehicle Supplement Manual

Introduction
2
Instrumentation
4
Servicing your vehicle
5
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Copyright © 2003 Ford Motor Company
Table of contents
1

ABOUT THIS SUPPLEMENT
This booklet supplements your Owner Guide and is part of the owner’s
portfolio. It describes the operation of your natural gas vehicle (NGV)
and how it differs from a standard gasoline powered vehicle. Therefore it
is very important that you read this guide and thoroughly familiarize
yourself and others operating the vehicle with this information.
Some of the information in this supplement replaces certain instructions
in the Owner Guide. Please read this supplement carefully and
completely. Refer to the Owner Guide for complete vehicle information.
WARNINGS
Warnings remind you to be especially careful in those areas of the
vehicle where carelessness can cause damage to your vehicle or possible
personal injury to yourself, your passengers or others. Please read all
warnings carefully.
ABOUT THE WARRANTIES
The normal vehicle warranties will apply to your NGV. For further
information, refer to your Warranty Information Booklet.
Specified maintenance procedures must be followed. Repairs must be
made by trained personnel.
It is important that your NGV be properly maintained by qualified Ford
trained gaseous fuel service technicians. If a problem occurs, it is
important that properly trained personnel diagnose and repair the cause.
If the problem relates to the fuel system, proper part replacement is
imperative to keep your vehicle operating correctly. NGV fuel system
components and standard gasoline fuel system components are not
interchangeable. If your NGV is not maintained in accordance with
approved service procedures, damage may occur and your warranty may
be invalidated.
Any modification to the fuel system of your NGV voids the Ford New
Vehicle Limited Warranty.
Introduction
Introduction
2

COMPRESSED NATURAL GAS (CNG) FUEL SYSTEM
Your vehicle is equipped with a dedicated compressed natural gas (CNG)
fuel system that is under high pressure.
Depending upon the application, the CNG fuel system is rated at a pressure
of 20,700 kPa (3,000 psi) at 21°C (70°F) or 24,800 kPa (3,600 psi) at
21°C (70°F). Refer to the label on the fuel filler door to determine the
fuel system pressure rating.
Use caution when servicing or maintaining any of the components of the
CNG fuel system.
Service to high-pressure fuel system components must be
conducted only at qualified dealerships by qualified technicians.
Failure to do so may cause damage to components or cause bodily
harm.
On F-150 Heritage natural gas vehicles,do not modify or replace the
bed with any non-OEM components. Should the bed need to be removed
for service or replacement, it should be done by a qualified dealership
using qualified technicians. Do not sit, stand or place heavy loads on the
in-bed or in-vehicle tank covers. Any bed cap added to this vehicle must
be well ventilated. Failure to provide adequate ventilation could result in
gas vapor build up over time potentially resulting in a combustible
mixture.
FUSES/ELECTRICAL SYSTEMS
NGV fuse strategy may be different than a non-NGV. Consult theFuses
and Relayssection in theRoadside emergencieschapter of your
Owner’s Guide for differences.
Introduction
3

FUEL GAUGE
The fuel gauge in your NGV behaves similarly to a typical gasoline fuel
gauge. However, the gauge operation is based on the pressure and
temperature of the natural gas, not on the level of liquid gasoline.
Depending upon application, a fuel gauge reading of Full will occur at a
pressure of approximately 20,700 kPa (3,000 psi) or 24,800 kPa (3,600 psi),
at a temperature of approximately 21°C (70°F). The NGV fuel gauge will
provide a linear reading from this point down to Empty. Refer to the
Fuelingsection of this supplement for more information on fuel gauge
performance during the fast-fill method of fueling.
Instrumentation
Instrumentation
4

CNG FUEL SYSTEM COMPONENT IDENTIFICATION
The following illustrations depict the major unique components of the
CNG fuel system. All of these unique components are constructed of
special materials that withstand the effects of CNG.NEVERreplace a
unique CNG fuel system component with a standard gasoline fuel system
component or any aftermarket component.
E-Series Van
Servicing your vehicle
Servicing your vehicle
5

E-450 Cutaway
1.Fuel rail sensors -An injection pressure sensor and an engine fuel
temperature sensor provide engine fuel information to the powertrain
control module.
2.Isolation solenoid valve -Blocks fuel flow from supply line to
injection manifold when the engine is off.
3.Engine -
A modified 5.4L gasoline engine with Sequential Electronic Fuel
Injection (SEFI), an improved valvetrain and a high compression ratio.
4.Powertrain control module -Uniquely calibrated for NGV application.
5.Extended range fuel tank -An optional steel fuel tank located in
the cargo area.
6.Sealed vent box -Dispenses natural gas vapor to atmosphere if
vapor becomes present.
7.Internal tank valve -One electronically actuated, normally closed
solenoid valve is located in each fuel tank. The valve is wired into the
vehicle’s inertia switch. If the engine cranks but does not start after a
collision, the fuel solenoid valve inertia switch may have been activated.
The inertia switch is a device intended to close the fuel solenoid valve
when your vehicle has been involved in a substantial jolt.
8.Stone shield(s) -Protective shield(s) to prevent damage to the fuel
tank(s) caused by road debris or other road hazards.
Servicing your vehicle
6

9.Aft axle fuel tanks -Two steel fuel tanks located behind the rear axle.
10.Midship fuel tank -A steel fuel tank located underbody.
11.High pressure fuel lines -Delivers high pressure fuel to the fuel
tanks and fuel pressure regulator.
12.Fuel pressure regulator/Coalescent fuel filter -Reduces fuel
pressure and removes impurities from the gas.
13.Low pressure fuel line -Supplies natural gas to the injectors.
14.AFV module -Contains the unique powertrain electronics that are
required for an NGV.
F-150 Heritage Pick-up
1.Fuel rail sensors -An injection pressure sensor and an engine fuel
temperature sensor provide engine fuel information to the powertrain
control module.
2.Isolation solenoid valve -Blocks flow from supply line to injection
manifold when the engine is off.
3.Engine -
A modified 5.4L gasoline engine with Sequential Electronic Fuel
Injection (SEFI), an improved valvetrain and a high compression ratio.
4.Powertrain control module -Uniquely calibrated for NGV application.
5.Internal tank valve -One electronically actuated, normally closed
solenoid valve is located in each fuel tank. The valve is wired into the
Servicing your vehicle
7

vehicle’s inertia switch. If the engine cranks but does not start after a
collision, the fuel solenoid valve inertia switch may have been activated.
The inertia switch is a device intended to close the fuel solenoid valve
when your vehicle has been involved in a substantial jolt.
6.Standard fuel tanks -Two steel fuel tanks located in the bed of the
truck.
6b.In-bed tank cover -Cover to prevent damage to the fuel tanks.
Protective shield to prevent damage to the fuel tank caused by road
debris or other road hazards.Do not sit, stand or place heavy loads
on the fuel tank cover.
7.Stone shield -Protective shield to prevent damage to the fuel tank
caused by road debris or other road hazards.
8.Underbody fuel tank -A steel fuel tank located underbody.
9.High pressure fuel lines -Delivers high pressure fuel to the fuel
tanks and fuel pressure regulator.
10.Fuel pressure regulator/Coalescent fuel filter -Reduces fuel
pressure and removes impurities from the gas.
11.Low pressure fuel line -Supplies natural gas to the injectors.
12.AFV module -Contains the unique powertrain electronics that are
required for an NGV.
Crown Victoria
1.NGV module -Provides power for the fuel injectors. Also, drives the
fuel gauge using fuel tank pressure and temperature sensors.
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Servicing your vehicle
8