2001 FORD F SERIES MOTORHOME AND COMMERCIAL CHASSIS check engine light

WARNING LIGHTS AND CHIMES
Low fuel
Illuminates as an early reminder of a
low fuel condition indicated on the
fuel gauge (refer toFuel Gaugein
this chapter for more information).
When refueling, after the light
comes on, the amount of fuel that is added will be less than the
advertised capacity since there is fuel still in the tank. The ignition must
be in the ON position for this lamp to illuminate. The lamp will also
illuminate for several seconds after the ignition is turned to the ON
position regardless of the fuel level to ensure your bulb is working.
Oil pressure/Engine coolant
This light will come on when the
key is in the ON position and the:
•engine coolant temperature is
very high
•engine oil pressure is low
The light serves as a notice that a system needs your attention and to
check the engine coolant temperature gauge and the engine oil pressure
gauge.
Refer toEngine coolant temperature gaugeandEngine oil pressure
gaugein this chapter for more information.
F
E
CH H
L
18
8
PRN 21LOW
FUEL
BRAKE!+ -+ -000000000
0
50
60
70
20
10
0 3040
80
90
100
20406080
100
120
140
180
MPH km/h
1
02
RPMx1000
3
4
5
6
SERVICE
ENGINE
SOONABSFUEL
RESETDOOR
AJARBRAKE
LOW
FUEL
Instrumentation
6

Service engine soon
Your vehicle is equipped with a
computer that monitors the engine’s
emission control system. This
system is commonly known as the
On Board Diagnostics System
(OBD). This OBD system protects
the environment by ensuring that your vehicle continues to meet
government emission standards. The OBD system also assists the service
technician in properly servicing your vehicle.
TheService Engine Soonindicator light illuminates when the ignition is
first turned to the ON position to check the bulb. If it comes on after the
engine is started, one of the engine’s emission control systems may be
malfunctioning. The light may illuminate without a driveability concern
being noted. The vehicle will usually be drivable and will not require
towing.
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 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.
SERVICE
ENGINE
SOON
Instrumentation
8

BRAKES
Your service brakes are self-adjusting. Refer to the Scheduled
maintenance guide for scheduled maintenance.
Occasional brake noise is normal and often does not indicate a
performance concern with the vehicle’s brake system. In normal
operation, automotive brake systems may emit occasional or intermittent
squeal or groan noises when the brakes are applied. Such noises are
usually heard during the first few brake applications in the morning;
however, they may be heard at any time while braking and can be
aggravated by environmental conditions such as cold, heat, moisture,
road dust, salt or mud. If a “metal-to-metal,” “continuous grinding” or
“continuous squeal” sound is present while braking, the brake linings
may be worn-out and should be inspected by a qualified service
technician.
If you are driving down a long or steep hill, shift to a lower gear.
Do not apply your brakes continuously, as they may overheat
and become less effective.
Anti-lock brake system (ABS)
On vehicles equipped with an anti-lock braking system (ABS), a noise
from the hydraulic pump motor and pulsation in the pedal may be
observed during ABS braking events. Pedal pulsation coupled with noise
while braking under panic conditions or on loose gravel, bumps, wet or
snowy roads is normal and indicates proper functioning of the vehicle’s
anti-lock brake system. The ABS performs a self-check after you start
the engine and begin to drive away. A brief mechanical noise may be
heard during this test. This is normal. If a malfunction is found, the ABS
warning light will come on. If the vehicle has continuous vibration or
shudder in the steering wheel while braking, the vehicle should be
inspected by a qualified service technician.
The ABS operates by detecting the
onset of wheel lockup during brake
applications and compensates for
this tendency. The wheels are
prevented from locking even when
the brakes are firmly applied. The
accompanying illustration depicts
the advantage of an ABS equipped
Driving
27

SERVICE RECOMMENDATIONS
To help you service your vehicle:
•We highlight do-it-yourself items in the engine compartment for easy
location.
•We provide a scheduled maintenance guide which makes tracking
routine service easy.
If your vehicle requires professional service, your dealership can provide
the necessary parts and service. Check your “Warranty Guide” to find out
which parts and services are covered.
Use only recommended fuels, lubricants, fluids and service parts
conforming to specifications. Motorcraft parts are designed and built to
provide the best performance in your vehicle.
PRECAUTIONS WHEN SERVICING YOUR VEHICLE
Be especially careful when inspecting or servicing your vehicle.
•Do not work on a hot engine.
•When the engine is running, make sure that loose clothing, jewelry or
long hair does not get caught up in moving parts.
•Do not work on a vehicle with the engine running in an enclosed
space, unless you are sure you have enough ventilation.
•Keep all lit cigarettes, open flames and other lit material away from
the battery and all fuel related parts.
If you disconnect the battery, the engine must “relearn” its idle
conditions before your vehicle will drive properly, as explained inBattery
in this chapter.
Working with the engine off
1. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
2. Turn off the engine and remove the key.
3. Block the wheels to prevent the vehicle from moving unexpectedly.
Working with the engine on
1. Set the parking brake and ensure the gearshift is securely latched in P
(Park).
2. Block the wheels to prevent the vehicle from moving unexpectedly.
Maintenance and care
57

•Combine errands and minimize stop-and-go driving.
Maintenance
•Keep tires properly inflated and use only recommended size.
•Operating a vehicle with the wheels out of alignment will reduce fuel
economy.
•Use recommended engine oil. Refer toLubricant Specifications.
•Perform all regularly scheduled maintenance items. Follow the
recommended maintenance schedule and owner maintenance checks
found in your vehicle scheduled maintenance guide.
Conditions
•Heavily loading a vehicle or towing a trailer may reduce fuel economy
at any speed.
•Carrying unnecessary weight may reduce fuel economy (approximately
0.4 km/L [1 mpg] is lost for every 180 kg [400 lb] of weight carried).
•Adding certain accessories to your vehicle (for example bug
deflectors, rollbars/light bars, running boards, ski/luggage racks) may
reduce fuel economy.
•Using fuel blended with alcohol may lower fuel economy.
•Fuel economy may decrease with lower temperatures during the first
12–16 km (8–10 miles) of driving.
•Driving on flat terrain offers improved fuel economy as compared to
driving on hilly terrain.
•Transmissions give their best fuel economy when operated in the top
cruise gear and with steady pressure on the gas pedal.
•Close windows for high speed driving.
EPA window sticker
Every new vehicle should have the EPA window sticker. Contact your
dealer if the window sticker is not supplied with your vehicle. The EPA
window sticker should be your guide for the fuel economy comparisons
with other vehicles.
It is important to note the box in the lower left corner of the window
sticker. These numbers represent the Range of L/100 km (MPG)
expected on the vehicle under optimum conditions. Your fuel economy
may vary depending upon the method of operation and conditions.
Maintenance and care
86

If other than Ford, Motorcraft or Ford-authorized parts are used for
maintenance replacements or for service of components affecting
emission control, such non-Ford parts should be equivalent to genuine
Ford Motor Company parts in performance and durability.
Do not park, idle, or drive your vehicle in dry grass or other dry
ground cover. The emission system heats up the engine
compartment and exhaust system, which can start a fire.
Illumination of the “Service Engine Soon” light, charging system warning
light or the temperature warning light, fluid leaks, strange odors, smoke
or loss of engine power, could indicate that the emission control system
is not working properly.
Exhaust leaks may result in entry of harmful and potentially
lethal fumes into the passenger compartment.
Do not make any unauthorized changes to your vehicle or engine. By
law, vehicle owners and anyone who manufactures, repairs, services,
sells, leases, trades vehicles, or supervises a fleet of vehicles are not
permitted to intentionally remove an emission control device or prevent
it from working. Information about your vehicle’s emission system is on
the Vehicle Emission Control Information Decal located on or near the
engine. This decal identifies engine displacement and gives some tune up
specifications.
Please consult your “Warranty Guide” for complete emission warranty
information.
Readiness for Inspection/Maintenance (I/M) testing
In some localities, it may be a legal requirement to pass an I/M test of
the on-board diagnostics system. If your “Check Engine/Service Engine
Soon” light is on, refer to the description in theWarning Lights and
Chimessection of theInstrumentationchapter. Your vehicle may not
pass the I/M test with the “Check Engine/Service Engine Soon” light on.
If the vehicle’s powertrain system or its battery has just been serviced,
the on-board diagnostics system is reset to a “not ready for I/M test”
condition. To ready the on-board diagnostics system for I/M testing, a
minimum of 30 minutes of city and highway driving is necessary as
described below:
•First, at least 10 minutes of driving on an expressway or highway.
Maintenance and care
90

A
Air cleaner filter ...................61, 93
Ambulance packages ....................3
Antifreeze (see Engine
coolant) .......................................64
Anti-lock brake system (see
Brakes) ..................................27–28
Automatic transmission
driving an automatic
overdrive ...................................31
fluid, adding ..............................71
fluid, checking ..........................71
fluid, refill capacities ................94
fluid, specification ....................96
Axle
lubricant specifications ......95–96
refill capacities ..........................94
B
Battery .........................................73
acid, treating emergencies .......73
charging system warning light ..7
jumping a disabled battery ......52
maintenance-free ......................73
replacement, specifications .....93
servicing ....................................73
voltage gauge ............................12
Brakes ....................................27–28
anti-lock ...............................27–28
anti-lock brake system (ABS)
warning light .........................9, 28
brake warning light ....................7
fluid, checking and adding ......62
fluid, refill capacities ................94
fluid, specifications .............95–96
lubricant specifications ......95–96
shift interlock ............................30Break-in period .............................3
C
Capacities for refilling fluids ......94
Cleaning your vehicle .................91
engine compartment ................92
exterior ......................................92
wheels ........................................91
Coolant
checking and adding ................64
refill capacities ....................67, 94
specifications ......................95–96
Cruise control (see Speed
control) ........................................17
D
Daytime running lamps (see
Lamps) .........................................15
Dipstick
automatic transmission fluid ...71
engine oil ...................................58
Doors
door ajar warning .......................9
lubricant specifications ............95
Driveline universal joint and
slip yoke ......................................73
Driving under special
conditions
through water ...........................38
E
Emergencies, roadside
jump-starting ............................52
Emission control system ............89
Engine ....................................96–97
2001 Motorhome(mot)
Supplement(supplement)
USA English(fus)
Index
100

check engine/service engine
soon light ....................................8
cleaning .....................................92
coolant .......................................64
fail-safe coolant ........................68
idle speed control .....................73
lubrication specifications ...95–96
refill capacities ..........................94
service points ............................58
starting after a collision ...........39
Engine block heater ...................25
Engine oil ....................................58
checking and adding ................58
dipstick ......................................58
filter, specifications ............60, 93
recommendations .....................60
refill capacities ..........................94
specifications ......................95–96
Exhaust fumes ............................25
F
Fail safe cooling ..........................68
Fluid capacities ...........................94
Fuel ..............................................80
calculating fuel economy .........83
capacity .....................................94
choosing the right fuel .............82
comparisons with EPA fuel
economy estimates ...................86
detergent in fuel .......................83
filling your vehicle with fuel ...80,
84
filter, specifications ............87, 93
fuel pump shut-off switch .......39
gauge .........................................11
improving fuel economy ..........83
low fuel warning light ................6
octane rating .................82, 96–97
quality ........................................82running out of fuel ...................83
safety information relating to
automotive fuels .......................80
Fuses ......................................41–42
G
Gas mileage (see Fuel
economy) .....................................83
Gauges .........................................11
battery voltage gauge ...............12
engine coolant temperature
gauge .........................................12
engine oil pressure gauge ........11
fuel gauge ..................................11
odometer ...................................13
speedometer .............................13
tachometer ................................14
trip odometer ............................13
GAWR (Gross Axle Weight
Rating) .........................................33
calculating .................................35
definition ...................................33
driving with a heavy load ........33
location ......................................33
GVWR (Gross Vehicle Weight
Rating) .........................................33
calculating ...........................33, 35
definition ...................................33
driving with a heavy load ........33
location ......................................33
H
Hazard flashers ...........................39
Headlamps ...................................15
daytime running lights .............15
flash to pass ..............................16
high beam ...........................10, 15
turning on and off ....................15
2001 Motorhome(mot)
Supplement(supplement)
USA English(fus)
Index
101