1999 FORD E SERIES lock

Fast start glow plug system
The glow plug system consists of:
²eight glow plugs
²the glow plug relay
²engine oil temperature (EOT) sensor
²barometric pressure (BARO) sensor
The glow plug system is electronically controlled by the PCM. The PCM
energizes the glow plugs immediately after the ignition is placed in the
ON position, then determines how long the glow plugs will be on
according to the EOT and BARO sensors. The required time for the glow
plugs to be energized decreases as the engine oil temperature and
barometric pressure increase.
Engine cooling system
The cooling system contains an engine oil cooler which is mounted to
the side of the cylinder block. The cooler's function is to regulate engine
oil temperature.
Engine governed speed
The engine governor is controlled by the PCM. The PCM controls fuel
input to limit maximum engine speed. It will not, however, prevent
engine overspeeding resulting from downshifting at high vehicle speed or
by descending steep grades at too high a vehicle speed for the selected
transmission gear.
For maximum vehicle speed in various gears, refer to the ªTransmission
shift speedº chart in theDriving tipschapter. Do not exceed 3,600 rpm.
Maximum engine governed speed is 3,000±4,000 rpm depending on
engine load. Excessive rpm can only be achieved by manually
downshifting at too high of a vehicle speed.
Operating the engine beyond the governed speed can cause severe
engine damage.
Diesel information
5

Operation in standing water
Ingestion of water into the diesel engine can result in immediate and
severe damage to the engine. If driving through water, slow down to
avoid splashing water into the intake. If the engine stalls, and ingestion
of water into the engine is suspected, do not try to restart the engine.
Consult your dealer for service immediately. Follow the cylinder
compression test procedure outlined in the Workshop Manual, then
check the engine oil for contamination.
Engine block heater (if equipped)
Refer to theStartingchapter in your Owner Guide.
JUMP STARTING YOUR VEHICLE
The gases around the battery can explode if exposed to flames,
sparks, or lit cigarettes. An explosion could result in injury or
vehicle damage.
Do not push start your vehicle. You could damage the catalytic
converter.
Batteries contain sulfuric acid which burns skin, eyes, and
clothing.
Preparing your vehicle
Also see the label on the battery.
1. Use only a 12±volt supply to start your vehicle. If you connect your
battery to a 24±volt power supply you can damage your starter, ignition
system and other electrical components. Do not attach the jumper cables
to the glow plug relay as this could severely damage the glow plugs,
injector driver module and PCM.
2. Do not disconnect the battery of the disabled vehicle as this could
damage the vehicle's electrical system.
3. Park the booster vehicle close to the hood of the disabled vehicle
making sure theydo nottouch. Set the parking brake on both vehicles
and stay clear of the engine cooling fan and other moving parts.
Starting
11

CHANGING FUEL FILTER
Removal
1. Remove fuel filter cap by turning
counterclockwise. Fuel filter
element will come out with cap.
2. Remove and discard bevel gasket. Carefully clean mating surfaces.
3. Press in on fuel filter element locking tabs, to separate element from
cap.
Installation
The engine will not run properly if the fuel filter is not installed
in housing.
1. Apply a coating of clean diesel fuel to new bevel gasket and install
onto fuel filter housing gland.
2. Install new fuel filter element onto cap. Place new fuel filter element
and cap into fuel filter housing. Allow fuel to soak into fuel filter
element. Tighten cap onto fuel filter housing until cap contacts the
aluminum housing.
Fuel with more than average impurities may require more frequent filter
changing intervals.
General maintenance information
21

3.On F-Series models,open filter
drain valve by turning clockwise.
Allow to drain for approximately 25
seconds or until clean fuel is
observed. Close drain valve by
turning counterclockwise until firmly
seated.
3.On Econoline models,open filter drain valve release handle. Allow
to drain for approximately 25 seconds or until clean fuel is observed.
Close drain valve by resetting handle to original position.
4.On all models,verify that the fuel drain is closed. Close the hood and
remove the container from under the vehicle.
5. Restart the engine and check WATER IN FUEL indicator light. The
light should not glow. If it continues to glow, have fuel system checked
and repaired.
DRAIN
CLOSE
General maintenance information
27

IF THE ENGINE RUNS HOT
The following could cause the engine to overheat:
²Lack of coolant.
²Dirty cooling system.
²Driving with frozen coolant.
²Sticking thermostat.
²Overloading or pulling heavy trailers during hot weather.
²Grill or radiator air blockage.
²Slipping or missing drive belt.
²Plugged or very dirty air cleaner element.
IF FUSES BURN OUT
Burned-out or blown fuses usually indicate an electrical short-circuit,
although a fuse may occasionally burn out from vibration. Insert a second
fuse. If this fuse immediately burns out and you cannot locate the cause,
return your vehicle to your dealer for a circuit check.
Replacement fuses and circuit breakers must always be the same
rating as the original equipment shown. Never replace a fuse or
circuit breaker with one of a higher rating. Higher rated fuses or circuit
breakers could allow circuit overloading in the event of a circuit
malfunction, resulting in severe vehicle damage or personal injury.
Refer to the ªOwner Guideº for replacement of fuses.
Minor troubleshooting guide
35