octane FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS 2002 10.G Owners Manual

What you should do if the Service Engine Soon light illuminates
Light turns on solid:
This means that the OBD system has detected a malfunction.
Temporary malfunctions may cause yourService Engine Soonlight to
illuminate. Examples are:
1. The vehicle has run out of fuel. (The engine may misfire or run
poorly.)
2. Poor fuel quality or water in the fuel.
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 high quality fuel of the recommended octane and/or properly
installing and securely tightening the fuel 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. If
the TCIL is flashing, contact your Ford dealer as soon as possible. If this
condition persists, damage to the transmission may occur.
OVERDRIVE
Instrumentation
8

The flow of fuel through a fuel pump nozzle can produce static
electricity, which can cause a fire if fuel is pumped into an
ungrounded fuel container.
Use the following guidelines to avoid static build-up when filling an
ungrounded fuel container:
•Place approved fuel container on the ground.
•DO NOT fill a fuel container while it is in the vehicle (including the
cargo area).
•Keep the fuel pump nozzle in contact with the fuel container while
filling.
•DO NOT use a device that would hold the fuel pump handle in the fill
position.
Choosing the right fuel
Use only UNLEADED FUEL. The use of leaded fuel is prohibited by law
and could damage your vehicle.
Do not use fuel containing methanol. It can damage critical fuel system
components.
Your vehicle was not designed to use fuel or fuel additives with metallic
compounds, including manganese-based compounds containing MMT.
Repairs to correct the effects of using a fuel for which your vehicle was
not designed may not be covered by your warranty.
Octane recommendations
Your vehicle is designed to use
“Regular” unleaded gasoline with
pump (R+M)/2 octane rating of 87.
We do not recommend the use of
gasolines labeled as “Regular” that
are sold with octane ratings of 86 or lower in high altitude areas.
Do not be concerned if your engine sometimes knocks lightly. However, if
it knocks heavily under most driving conditions while you are using fuel
with the recommended octane rating, see your dealer or a qualified
service technician to prevent any engine damage.
87(R+M)/2 METHOD
Maintenance and specifications
74

Fuel quality
If you are experiencing starting, rough idle or hesitation driveability
problems during a cold start, try a different brand of “Regular” unleaded
gasoline. “Premium” unleaded gasoline is not recommended (particularly
in the United States) because it may cause these problems to become
more pronounced. If the problems persist, see your dealer or a qualified
service technician.
It should not be necessary to add any aftermarket products to your fuel
tank if you continue to use high quality fuel of the recommended octane
rating. Aftermarket products could cause damage to the fuel system.
Repairs to correct the effects of using an aftermarket product in your
fuel may not be covered by your warranty.
Many of the world’s automakers
issued the World-wide Fuel Charter
that recommends gasoline
specifications to provide improved
performance and emission control
system protection for your vehicle.
Gasolines that meet the World-wide
Fuel Charter should be used when
available. Ask your fuel supplier
about gasolines that meet the
World-wide Fuel Charter. In Canada,
look for fuels that display theAuto Makers’ Choice
logo.
Cleaner air
Ford endorses the use of reformulated “cleaner-burning” gasolines to
improve air quality.
Running out of fuel
Avoid running out of fuel because this situation may have an adverse
affect on powertrain components.
If you have run out of fuel:
•You may need to cycle the ignition from OFF to ON several times after
refueling, to allow the fuel system to pump the fuel from the tank to
the engine.
•Your “Service Engine Soon” indicator may come on. For more
information on the “Service Engine Soon” indicator, refer to the
Instrument Clusterchapter.
Maintenance and specifications
75

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 fuel remaining in the fuel
tank after the fuel gauge indicates empty.
The amount of usable fuel in the 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:
•Turn the engine/ignition switch to the off position prior to refueling,
an error in the reading will result if the engine is left running.
•Use the same filling rate setting (low — medium — high) each time
the tank is filled.
•Allow no more than 2 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.
Calculating fuel economy
1. Fill the fuel tank completely and record the initial odometer reading
(in kilometers or miles).
2. Each time you fill the tank, record the amount of fuel added (in liters
or gallons).
3. After at least three to five tank fill-ups, fill the fuel tank and record
the current odometer reading.
4. Subtract your initial odometer reading from the current odometer
reading.
Maintenance and specifications
79

ENGINE DATA
Engine 6.8L V10 engine
Cubic inches 415
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
IDENTIFYING YOUR VEHICLE
Certification label for 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.
Vehicle Identification Number
The vehicle identification number is attached to a metal tag and is
located on the front firewall to the right of the air filter.
If you ever find it necessary to communicate with Ford Motor Company
about your vehicle, always include the VIN in your communication.
Maintenance and specifications
99

check engine/
service engine soon light ...........7
cleaning .....................................58
coolant .......................................65
fail-safe coolant ........................70
idle speed control .....................63
lubrication specifications ...97, 99
refill capacities ..........................95
service points ............................60
starting after a collision ...........39
Engine block heater ...................25
Engine oil ....................................61
checking and adding ................61
dipstick ......................................61
filter, specifications ............62, 95
recommendations .....................62
refill capacities ..........................95
specifications ......................97, 99
Exhaust fumes ............................25
F
Fail safe cooling ..........................70
Fluid capacities ...........................95
Fuel ..............................................72
calculating fuel economy .........78
capacity .....................................95
choosing the right fuel .............74
comparisons with EPA fuel
economy estimates ...................81
detergent in fuel .......................75
filling your vehicle
with fuel ..............................72, 78
filter, specifications ............76, 95
fuel pump shut-off switch .......39
gauge .........................................13
improving fuel economy ..........78
low fuel warning light ..............10
octane rating .......................74, 99
quality ........................................75running out of fuel ...................75
safety information relating
to automotive fuels ..................72
Fuses ............................................41
G
Gas mileage
(see Fuel economy) ...................78
Gauges .........................................11
battery voltage gauge ...............13
engine coolant
temperature gauge ...................12
engine oil pressure gauge ........12
fuel gauge ..................................13
odometer ...................................14
speedometer .............................13
tachometer ................................14
trip odometer ............................14
GAWR (Gross Axle
Weight Rating) ............................34
calculating .................................35
definition ...................................34
driving with a heavy load ........34
location ......................................34
GVWR (Gross Vehicle
Weight Rating) ............................34
calculating ...........................34–35
definition ...................................34
driving with a heavy load ........34
location ......................................34
H
Hazard flashers ...........................39
Headlamps ...................................15
daytime running lights .............15
flash to pass ..............................16
high beam ...........................11, 15
turning on and off ....................15
warning chime ..........................11
Index
102

I
Ignition ...................................22, 99
Inspection/maintenance
(I/M) testing ................................83
Instrument panel
cluster ..........................................7
lighting up panel
and interior ...............................16
J
Jack ..............................................48
positioning .................................48
storage .......................................48
Jump-starting your vehicle ........51
K
Keys
key in ignition chime ...............11
positions of the ignition ...........22
L
Lamps
cargo lamps ...............................16
daytime running light ...............15
headlamps .................................15
headlamps, flash to pass ..........16
instrument panel, dimming .....16
replacing bulbs .........................16
Lights, warning and indicator ......7
anti-lock brakes (ABS) ........9, 28
brake ............................................9
charging system ........................10
check coolant ............................10
door ajar ....................................11
engine oil pressure ...................10
fuel reset ...................................10high beam .................................11
low fuel ......................................10
safety belt ...................................9
service engine soon ....................7
turn signal indicator .................10
Load limits ...................................34
GAWR ........................................34
GVWR ........................................34
trailer towing ............................34
Lubricant specifications .......97, 99
M
Motorcraft parts ....................76, 95
O
Octane rating ..............................74
Odometer .....................................14
Oil (see Engine oil) ....................61
Overdrive .....................................21
P
Parking brake ..............................29
Parts (see Motorcraft parts) ......95
Power distribution box
(see Fuses) .................................44
Power steering
fluid, checking and adding ......84
fluid, refill capacity ..................95
fluid, specifications .............97, 99
R
Relays ....................................41, 48
Index
103