
Idle control:
For periods of extended idle, the throttle should be set at an rpm that is
sufficient to keep the engine at normal operating temperatures. This
action can reduce the amount of engine damaging deposits.
•The engine contains a unique “Cold Weather - Idle up feature”
calibration strategy within the PCM. Under the appropriate conditions,
the strategy will automatically elevate the engine idle speed after
130 seconds of idling in cold ambient temperatures. For this feature to
be activated, the truck must be in P (Park) (for automatic
transmission), in neutral (for manual transmission) with the parking
brake applied and engine oil temperature below 158°F (70°C). This
strategy raises the rpm to a level that reduces the potential to
produce “coking” or “wet stacking”, which is common to all diesel
engines when idling for extended periods during cold ambient
temperatures.
•Your vehicle may have a factory option for a Stationary Elevated Idle
Control (SEIC) through dash-mounted Upfitter switches will allow the
operator to elevate the idle rpm for extended idle periods, as well as
aftermarket equipment such as PTO operation. This feature must be
configured even if ordered from the factory. See your authorized
dealer for required upfitting.
Operation in snow
Vehicle operation in heavy snowfall or extreme rain conditions may feed
excessive amounts of snow/water into the air intake system. This could
plug/soak the air filter with snow and may cause the engine to lose
power and possibly shut down.
You may not need to change the air filter and the vehicle may be driven
up to 200 miles (320 km) under the following conditions:
•Snow:At the earliest opportunity, open the hood and clear all the
snow and ice from the air filter housing inlet (do NOT remove the air
filter) and reset the air filter restriction gauge.
•Wet:The air filter will dry after about 15–30 minutes at highway
speeds. At the earliest opportunity, open the hood and reset the air
filter restriction gauge.
Refer toAir filter and restriction gaugein theMaintenance and
Specificationschapter of this supplement for more information.
Driving
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•use of biodiesel, up to and including 5% Biodiesel (B5)
•use of high sulfur diesel fuel
If you are operating your vehicle under any of these conditions, change
engine oil and filter every 5,000 miles (8,000 km).
AIR FILTER RESTRICTION GAUGE AND AIR FILTER
REPLACEMENT
Air filter restriction gauge:
The restriction gauge, located on
the upper housing of the air filter
assembly, measures the vacuum
inside the air filter. The more the air
filter is restricted (dirty, clogged),
the higher the vacuum reading
Check the air filter restriction gauge
whenever the hood is raised to
perform general engine maintenance
at least every 7,500 miles (12,000 km). If the vehicle is operated in
extremely dusty conditions, check and reset the gauge at least every
500 miles (800 km), or two weeks, whichever comes first.
Change the air filter when the gauge reads near the “change filter” line
and the chamber is filled with yellow. Engine performance and fuel
economy are adversely affected when the maximum restriction is
reached.
Blowing-out the air filter element with compressed air is not
recommended as the compressed air may damage the filter paper.
Note:It is not possible to determine the level of filter clogging by visual
appearance alone. A filter which appears to be dirty may actually have
several thousand miles (kilometers) of life remaining.
Always use the underhood air filter restriction gauge to
determine when the air filter element needs to be changed. The
warning light on the instrument cluster should not be used
exclusively for determining when the air filter element needs
changing.
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After installation of the new filter
element, reset the gauge by pressing
the reset button on top of the
gauge.
Note:Vehicle operation in heavy
snowfall or extreme rain conditions
may feed excessive amounts of
snow/water into the air intake
system. This could plug/soak the air
filter with snow and may cause the
engine to lose power and possibly
shut down.
You may not need to change the air filter and the vehicle may be driven
up to 200 miles (320 km) under the following conditions:
•Snow:At the earliest opportunity, open the hood and clear all the
snow and ice from the air filter housing inlet (do NOT remove the air
filter) and reset the air filter restriction gauge.
•Wet:The air filter will dry after about 15–30 minutes at highway
speeds. At the earliest opportunity, open the hood and reset the air
filter restriction gauge.
Air filter replacement:
When replacing the air filter element, use the Motorcraft air filter
element listed inMotorcraft part numberslater in this chapter.
WARNING:To reduce the risk of vehicle damage and/or
personal burn injuries do not start your engine with the air filter
removed and do not remove it while the engine is running.
Failure to use the correct air filter element may result in severe
engine damage.
•E-series air filter:
1. Disconnect the hoses from the air filter outlet tube.
Maintenance and Specifications
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If the engine won’t crank
Turn on the headlights. If the lights are dim, do not go on at all or when
the ignition is turned to START the lights become dim or go out, the
battery connections may be loose or corroded, or the battery may be
discharged. If there is a clicking or stuttering sound coming from the
engine compartment when you turn the key to START, this may also
indicate a loose or corroded battery connection.
Check the battery connections at the battery posts, cable connection to
the engine grounding point and at the starter connection.
If a discharged battery is suspected, have it checked and corrected.
WARNING:Battery posts, terminals and related accessories
contain lead and lead compounds.Wash hands after handling.
•For vehicles with manual transmissions,the clutch pedalmustbe
fully depressed in order for the starter to operate.
•For vehicles with automatic transmissions,the gearshift lever
must be in P (Park) or N (Neutral) in order for the starter to operate.
•Try operating the starter switch several times. Should the switch be
corroded, this operation may clean the contacts or make the switch
temporarily operable until you can reach the dealer.
•If all electrical connections are tight and you need assistance to start,
refer toJump startingin theRoadside Emergencieschapter of your
Owner’s Guide(F-Super Duty) or refer to theJump startingsection
in theRoadside Emergencieschapter of this supplement (E-Series).
If engine cranks but won’t start
Prolonged starter cranking (in excess of 10 seconds) could cause
damage to the starter motor.
•Check the fuel gauge. You may be out of fuel. If the gauge shows that
there is fuel in the tank, the trouble may be in the electrical system or
the fuel system. If equipped with an auxiliary tank, be sure that the
tank control switch is set for the tank with fuel and not on an empty
tank.
•Leaving the ignition key turned to on for over two minutes without
starting may make starting difficult because the glow plugs will cease
activation. Reset the system by turning the ignition key to off and
then back to on again.
Maintenance and Specifications
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