light FORD F150 2002 10.G Bi Fuel Supplement Manual

FUEL SELECTOR SWITCH
This booklet supplements your Owner's Guide and is part of the owner's
portfolio. It describes the operation of yourBi-fuelvehicle 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.
The fuel selector switch allows you to select which fuel yourBi-fuel
vehicle will operate on.
The fuel selector switch only operates when the vehicle is at a
stop with the ignition in the OFF position. If the fuel selector
switch is moved while the vehicle is running, the gaseous fuel
injection system will NOT automatically change fuel modes and
no damage to the vehicle will occur. Except for vehicles equipped
with the LPG extended-range fuel tank system, the fuel selector
switch will allow you to switch between the two LPG fuel tanks
while you are driving.
Prior to starting the vehicle (with the ignition in the OFF position),
determine which fuel you would like to use and press the rocker switch
located on the dash panel.
When the selector switch is placed
in the ALT position, your engine will
operate in the gaseous fuel mode,
running on CNG or LPG (depending
upon application).
²A green indicator light will
illuminate on the fuel selector
switch to indicate that the vehicle is operating in the gaseous fuel
mode (CNG or LPG, depending upon application).
²The green indicator light operates independently of the fuel selector
switch and is controlled by the compuvalve.
ALT
GAS
Instrumentation and controls
13

When the selector switch is placed
in the GAS position, your engine will
operate in the unleaded gasoline
mode.
If the CNG or LPG (depending upon application) runs low during the
operation of the vehicle in the gaseous fuel mode, the gaseous fuel
injection system will automatically change to the unleaded gasoline
operating mode. The green indicator light on the fuel selector switch will
turn off to show the vehicle has changed to the unleaded gasoline
operating mode.
The vehicle's fuel system will NOT automatically change to the
gaseous fuel mode (CNG or LPG, depending upon application),
if the level of the unleaded gasoline runs low.
FUEL GAUGE
The fuel gauge in your CNG or LPGBi-fuelvehicle (depending upon
application) behaves similarly to a standard gasoline fuel gauge. The fuel
gauge will provide a linear reading from Full down to Empty.
²Fuel gauge operation for aLPG Bi-fuelvehicle is based on a float
type sensor measuring the level of the liquid propane in the fuel
tank(s).
²Fuel gauge operation for aCNG Bi-fuelvehicle is based on the
pressure and temperature of the natural gas in the fuel tank(s).
Depending upon the application, a full fuel gauge reading 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 21ÉC (70ÉF). For more
information on fuel gauge performance during the fast-fill method of
CNG fueling, refer toRefueling your Bi-fuel vehiclein the
Maintenance and carechapter of this supplement.
ALT
GAS
Instrumentation and controls
14

WARNING LIGHTS
With the engine running, the ªCheck Engine/Service Engine Soonº
indicator light (depending upon application) will illuminate on the
instrument cluster when the On Board Diagnostics System and/or the
Gaseous Fuel Injection System detects a malfunction in one of the
engine's emission controls. For more information, refer toWarning light
and chimesin theInstrumentationchapter of your Owner's Guide and
this supplement.
If a malfunction of the Gaseous Fuel
Injection System is detected with
the engine running in the gaseous
fuel mode, the green indicator light
on the fuel selector switch will flash
on and off.
The warning lights may illuminate or flash on and off (depending upon
application) without a driveability concern being noted. The vehicle will
usually be drivable and will not require towing. Contact a qualified Ford
dealership at the first available opportunity.
GASALT
Instrumentation and controls
15

STARTING THE ENGINE
Before you start yourBi-fuelvehicle, read and understand all
information found in theStartingchapter of your Owner's Guide and
this supplement.
Use the following procedure to start yourBi-fuelvehicle in the gaseous
fuel mode:
1. Place the fuel selector switch in
the (ALT) position.
²If equipped with the
extended-range LPG fuel system,
select which LPG fuel tank you
would like to use.
2. Turn the ignition to position 4
(ON).
3. Wait until the green gaseous fuel
mode indicator light becomes
illuminated (1±5 seconds).
ALT
GAS
1
2
34
5
GASALT
Starting
16

ENGINE OPERATION
Before you drive yourBi-fuelvehicle, read and understand all
information found in theDrivingchapter of your Owner's Guide and this
supplement.
The green indicator light will be
illuminated on the fuel selector
switch when the vehicle is operating
in the gaseous fuel mode (CNG or
LPG, depending upon application).
The fuel selector switch only operates when the vehicle is at a
stop with the ignition in the OFF position. If the fuel selector
switch is moved while the vehicle is running, the gaseous fuel
injection system will NOT automatically change fuel modes and
no damage to the vehicle will occur. Except for vehicles equipped
with the LPG extended-range fuel tank system, the fuel selector
switch will allow you to switch between the two LPG fuel tanks
while you are driving.
If the CNG or LPG (depending upon application) runs low during the
operation of the vehicle in the gaseous fuel mode:
²the gaseous fuel injection system will automatically change to the
unleaded gasoline operating mode.
²the operator may temporarily notice a slight hesitation.
²the green indicator light on the fuel selector switch will go off.
The vehicle's fuel system will NOT automatically change to the
gaseous fuel mode (CNG or LPG, depending upon application),
if the level of the unleaded gasoline runs low.
To avoid damage to the unleaded gasoline fuel injection system of
your Bi-fuel vehicle, operate your vehicle at least every 60 days
using unleaded gasoline. Use a minimum of one full tank of
unleaded fuel every 60 days.
GASALT
Driving
18