fuel cap FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS 1999 10.G Owners Manual

3. The fuel cap may not have been properly installed and securely
tightened.
These temporary malfunctions can be corrected by filling the fuel tank
with good quality fuel and/or properly installing and securely tightening
the gas cap. After three driving cycles without these or any other
temporary malfunctions present, theService Engine Soonlight should
turn off. (A driving cycle consists of a cold engine startup followed by
mixed city/highway driving.) No additional vehicle service is required.
If theService Engine Soonlight remains on, have your vehicle serviced
at the first available opportunity.
Light is blinking:
Engine misfire is occurring which could damage your catalytic converter.
You should drive in a moderate fashion (avoid heavy acceleration and
deceleration) and have your vehicle serviced at the first available
opportunity.
Under engine misfire conditions, excessive exhaust temperatures
could damage the catalytic converter, the fuel system, interior
floor coverings or other vehicle components, possibly causing a fire.
The Transmission Control Indicator
Light (TCIL), which is located on
the gearshift lever (the word OFF),
may flash steadily if a transmission
malfunction has been detected. It
the TCIL is flashing, contact your Ford dealer as soon as possible. If this
condition persists, damage to the transmission may occur.
Anti-lock brake system (ABS)
Momentarily illuminates when the
ignition is turned on and the engine
is off. If the light remains on,
continues to flash or fails to
illuminate, have the system serviced
immediately.
Normal is braking is still effective unless the brake warning light(s) also
illuminate(s) with the ignition turned to ON.
OVERDRIVE
ABS
Instrumentation
8

GAUGES
Fuel gauge
Displays approximately how much
fuel is in the fuel tank (when the
key is in the ON position). The
ignition should be in the OFF
position while the vehicle is being
refueled. When the gauge first
indicates empty, there is a small
amount of reserve fuel in the tank.
When refueling the vehicle from
empty indication, the amount of fuel
that can be added will be less than the advertised capacity due to the
reserve fuel.
Engine oil pressure gauge
This shows the engine oil pressure
in the system. Sufficient pressure
exists as long as the needle remains
in the normal range (the area
between the “L” and “H”).
If the gauge indicates low pressure,
stop the vehicle as soon as safely
possible and switch off the engine
immediately. Check the oil level.
Add oil if needed (refer toEngine
oilin theMaintenance and care
chapter). If the oil level is correct, have your vehicle checked at your
dealership or by a qualified technician.
F
E
CH H
L
18
8
PRN 21LOW
FUEL
+ -+ -000000000
0
50
60
70
20
10
0 3040
80
90
100
20406080
100
120
140
180
MPH km/hBRAKE!
1
02
RPMx1000
3
4
5
6
SERVICE
ENGINE
SOONABSFUEL
RESETDOOR
AJARBRAKE
L
H
Instrumentation
10

Fuse/Relay
LocationFuse Amp
RatingDescription
8 10A* Brake Pressure Switch, Stop Lamp Switch for
Power Brake Assist Module*, Speed Control
Module, Powertrain Control Module, ABS
module, Brake Shift Interlock Actuator
9 5A* Alternator
10 20A* Daytime Running (DRL) Lamps
11 30A* Ignition Coils, Radio Capacitors #1 and #2,
Powertrain Control Module Relay
12 20A* Trailer Tow Running Lamps Feed, Trailer Tow
Backup Lamps Feed, IP-Backup Lamp Feed
13 30A** Trailer Tow Electric Brake Controller Feed
14 60A** Right Turn Signal Relay Contacts, Left Turn
Signal Relay Contacts, Hazard Flasher, Stop
Lamp Switch - Trailer Brake Control Feed,
Stop Lamp Switch - Brake Lamp Feeds
15 -- Not Used
16 60A** ABS Module
17 -- Not Used
18 -- Not Used
19 -- Not Used
20 40A** Powertrain Control Module Relay
21 20A** Fuel Pump Motor
22 20A** Diagnostic Tool Connector, Cigar Lighter
23 40A** Blower Motor Relay Contacts
24 40A** Courtesy Lamp Relay Contacts, Cluster
Memory, BB Battery Feed
25 50A** Ignition Switch Feed #2 (Terminals B4 & B5)
26 60A** Ignition Switch Feed #3 (Terminals B1 & B3)
27 30A** Headlamp Switch (Headlamps On), Flash To
Pass Switch
28 — Not Used
29 60A** Power Brake Assist Motor
Roadside emergencies
44

Batteries normally produce explosive gases which can cause
personal injury. Therefore, do not allow flames, sparks or lighted
substances to come near the battery. When working near the battery,
always shield your face and protect your eyes. Always provide proper
ventilation.
When lifting a plastic-cased battery, excessive pressure on the
end walls could cause acid to flow through the vent caps,
resulting in personal injury and/or damage to the vehicle or battery.
Lift the battery with a battery carrier or with your hands on opposite
corners.
Keep batteries out of reach of children. Batteries contain sulfuric
acid. Avoid contact with skin, eyes or clothing. Shield your eyes
when working near the battery to protect against possible splashing of
acid solution. In case of acid contact with skin or eyes, flush
immediately with water for a minimum of 15 minutes and get prompt
medical attention. If acid is swallowed, call a physician immediately.
To account for customer driving habits and conditions, your automatic
transmission electronically controls the shift quality by using an adaptive
learning strategy. The adaptive learning strategy is maintained by power
from the battery. When the battery is disconnected or a new battery is
installed, the transmission must relearn its adaptive strategy. Optimal
shifting will resume within a few hundred kilometers (miles) of
operation.
If the shift quality does not improve within a few hundred
kilometers (miles) of operation, or if the downshifts and other
throttle conditions do not function normally, see your dealer or a
qualified service technician as soon as possible.
Because your vehicle’s engine is also electronically controlled by a
computer, some control conditions are maintained by power from the
battery. When the battery is disconnected or a new battery is installed,
the engine must relearn its idle and fuel trim strategy for optimum
driveability and performance. To begin this process:
1. Set your parking brake.
Maintenance and care
68

Follow these guidelines when using snow tires and chains:
•Use only SAE Class S chains.
•Install chains securely, verifying that the chains do not touch any
wiring, brake lines or fuel lines.
•Drive cautiously. If you hear the chains rub or bang against your
vehicle, stop and re-tighten the chains. If this does not work, remove
the chains to prevent damage to your vehicle.
•If possible, avoid fully loading your vehicle.
•Remove the tire chains when they are no longer needed. Do not use
tire chains on dry roads.
•The suspension insulation and bumpers will help prevent vehicle
damage. Do not remove these components from your vehicle when
using snow tires and chains.
WHAT YOU SHOULD KNOW ABOUT AUTOMOTIVE FUELS
Important safety precautions
Do not overfill the fuel tank. The pressure in an overfilled tank
may cause leakage and lead to fuel spray and fire.
The fuel system may be under pressure. If the fuel filler cap is
venting vapor or if you hear a hissing sound, wait until it stops
before completely removing the fuel filler cap. Otherwise, fuel may
spray out and injure you or others.
If you do not use the proper fuel filler cap, excessive pressure or
vacuum in the fuel tank may damage the fuel system or cause
the fuel system to work improperly in a collision, which may result in
possible personal injury.
Automotive fuels can cause serious injury or death if misused or
mishandled.
Maintenance and care
71

Fuel in the fuel system remains under high pressure even when
the engine is not running. Before servicing or disconnecting any
of the fuel lines or fuel system components, the fuel system pressure
must be relieved in order to prevent accidental spraying of fuel,
causing personal injury or a fire hazard.
1. Shut the engine off and relieve the fuel system pressure.
•Remove the Schrader valve cap
and install the EFI/CFI Fuel
Pressure Gauge. The EFI/CFI
Fuel Pressure Gauge 310–012
(T80L-9974–B) is available at a
certified Ford parts dealer.
•Open the manual valve slowly on
the EFI/CFI Fuel Pressure Gauge
and relieve the fuel pressure. This
will drain some fuel out of the
system; place the fuel in a
suitable container.
2. Use the fuel line disconnect tool
to disconnect the fuel lines from the
fuel filter. The Fuel Line Disconnect
Tool 310–S039 (T90T-9550–S) is
available at a certified Ford parts
dealer.
•Disconnect the safety clip from
the male hose.
Maintenance and care
78

•Install the fuel line disconnect
tool and push into the fitting.
•Separate the fittings. Clean the
fittings and inspect the fittings for
damage.
Installation
1. Install the fuel filter.
2. Lubricate the tube end with clean
engine oil meeting Ford
specification WSS-M2C153–G to
ease assembly.
•Pull on the fitting to make sure it
is fully engaged, then install
safety clip.
•Align and push the tube into the
fitting until you hear a click.
3. Remove the EFI/CFI Fuel
Pressure Gauge.
4. Install the Schrader valve cap securely.
Maintenance and care
79

ESSENTIALS OF GOOD FUEL ECONOMY
Measuring techniques
Your best source of information about actual fuel economy is you, the
driver. You must gather information as accurately and consistently as
possible. Fuel expense, frequency of fillups or fuel gauge readings are
NOT accurate as a measure of fuel economy. We do not recommend
taking fuel economy measurements during the first 1 600 km
(1 000 miles) of driving (engine break-in period). You will get a more
accurate measurement after 3 000 km–5 000 km (2 000 miles-
3 000 miles).
Filling the tank
The advertised fuel capacity of the fuel tank on your vehicle is equal to
the rated refill capacity of the fuel tank as listed in theRefill Capacities
chart in this “Owner Guide.” The advertised capacity is the amount of
the Indicated Capacity and the Empty Reserve combined. Indicated
Capacity is the difference in the amount of fuel in a full tank and a tank
when the fuel gauge indicates empty. Empty Reserve is the small amount
of usable fuel remaining in the fuel tank after the fuel gauge indicates
empty.
The amount of Empty Reserve varies and should not be relied
upon to increase driving range. When refueling your vehicle after
the fuel gauge indicates empty, you might not be able to refuel
the full amount of the advertised capacity of the fuel tank due to
the empty reserve still present in the tank.
For consistent results when filling the fuel tank:
•Use the same filling rate setting (low — medium — high) each time
the tank is filled.
•Allow three automatic click-offs when filling.
•Always use fuel with the recommended octane rating.
•Use a known quality gasoline, preferably a national brand.
•Use the same side of the same pump and have the vehicle facing the
same direction each time you fill up.
•Have the vehicle loading and distribution the same every time.
Your results will be most accurate if your filling method is consistent.
Maintenance and care
80

MOTORCRAFT PART NUMBERS
Component 6.8L V10 engine
Air filter element FA-1634
Battery BXT-65-750
Fuel filter FG-986B
Oil filter FL-820-S
PCV valve EV-233
Spark plugs* AWSF-22E
*Refer to Vehicle Emissions Control Information (VECI) decal for spark
plug gap information.
REFILL CAPACITIES
Fluid Ford Part
NameApplication Capacity
Brake fluid High
Performance
DOT 3 Motor
Vehicle Brake
FluidAll Fill to line on
reservoir
Engine oil
(includes filter
change)Motorcraft
5W-30 Super
Premium Motor
OilAll 5.7L
(6.0 quarts)
Engine coolant
1Premium Engine
CoolantAll 29.0L
(30.6 quarts)
Power steering
fluidMotorcraft
MERCONAT FAll Keep in FULL
range on
dispstick
Rear axle
2Motorcraft SAE
75W140
Synthetic Rear
Axle LubricantDana 80 3.9L
(4.0 quarts)3
Dana 135 11.7L
(12.0 quarts)3
Fuel tank N/A All 284.0L
(75 .0 gallons)
Capacities and specifications
84

ENGINE DATA
Engine 6.8L V10 engine
Cubic inches 415
Horsepower 275 @ 4250 rpm
Torque 410 lbs.ft. @ 2650 rpm
Required fuel 87 octane
Firing order 1-6-5-10-2-7-3-8-4-9
Spark plug gap 1.3-1.4 mm (0.052-0.056 inch)
Ignition system Coil on plug
Compression ratio 9.0:1
VEHICLE IDENTIFICATION NUMBER
Incomplete vehicles
On completed derivations of incomplete vehicles, the certification label is
affixed at a location determined by a subsequent stage manufacturer of
the completed vehicle. In these cases the completed vehicle is
manufactured in two or more stages by two or more separate
manufacturers.
Capacities and specifications
87