FORD SUPER DUTY 2003 1.G 7.3L Diesel Engine User Guide

4. When the engine starts, release the key. The glow plugs will continue
to be activated for up to two minutes. If the engine is not started before
the activation ceases, the glow plug system must be reset by turning the
ignition key to OFF.
5. After the engine starts, allow it to idle for about 15 seconds. (Do not
increase engine speed until the oil pressure gauge indicates normal
pressure.)
STOPPING THE ENGINE
Turn the ignition to OFF. To prolong engine life (after extended high
speed or maximum GVW operation), it is recommended that a hot engine
be allowed to operate at low idle for about 7–10 minutes which would
allow sufficient time for the turbocharged engine to cool down.
COLD WEATHER OPERATION
Changing to a lighter grade engine oil also makes starting easier under
these conditions. Refer toEngine Oil Specificationsin theGeneral
maintenance informationchapter.
At temperatures below–7°C (20°F), Number 2–D Diesel fuel may
thicken enough to clog the fuel filter. Your engine is equipped with a fuel
filter/heater/water/separator to keep the wax melted which will help
prevent fuel filter clogging. However, if the engine starts but stalls after a
short time and will not restart, the fuel filter may be clogged. For best
results in cold weather, use Number 1–D Diesel fuel or“winterized”
Number 2–D Diesel fuel which has an additive to minimize wax
formation.
Your vehicle is also equipped with a bypass relief valve, located on the
in-tank fuel sending unit, which provides fuel flow to the engine if the
fuel pickup should become plugged by ice or wax. To allow this bypass
valve to function and avoid engine fuel starvation, it is recommended
that, during cold weather operation 0°C (32°F) or below, the fuel level in
your tank should not be allowed to drop below 1/4 full. This will help
prevent air from entering the fuel system and stalling the engine.
In cold weather below 0°C (32°F) your Diesel engine will slowly increase
to a higher idle speed if left idling in P (Park). The sound of the engine
may change also, as an exhaust device engages to improve heater
performance and reduce exhaust smoke.
Starting
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Operation in snow
Vehicle operation in heavy snowfall or in dry loose snow that may swirl
around the front of the vehicle may feed excessive amounts of snow into
the air intake system. This could plug the air cleaner with snow and
cause the engine to stall.
Refer toAir filter restriction gaugein theDiesel informationchapter
and Engine air filter in theWarning lightschapter for more information.
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.
Starting
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DUAL FUEL TANK SELECTOR CONTROL (IF EQUIPPED)
If your vehicle is equipped with dual fuel tanks, you will have a selector
control, located to the right of the steering wheel, which allows you to
draw fuel from either tank. Your fuel gauge will display the amount of
fuel in the currently selected tank.
Fuel level indication is delayed for several minutes when the tank
selector switch is actuated. Fuel level indication can be obtained
immediately by turning off and restarting the engine.
MANUAL TRANSMISSION SHIFT SPEEDS
Do not overspeed the engine when going downhill or steep grades. If
equipped, use the tachometer and do not allow engine speed to exceed
the redline area. Operating the engine beyond the recommended speeds
can cause severe engine damage.
If your vehicle is an F-Series equipped with a manual
transmission, your vehicle has an electronic operating strategy
which protects the engine system when the engine is operating
with high coolant temperatures; fueling to the engine will be
modified to prevent damage to the engine. Some power loss may
be experienced if the vehicle is overloaded.
Driving tips
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Upshift and downshift according to the following shift speed charts:
Upshifts when accelerating
(recommended for best fuel economy)
6-speed transmission
Shift from: Transfer case position
1(if equipped)
2H or 4H 4L
LO-1 8 km/h (5 mph) 3 km/h (2 mph)
1-2 16 km/h (10 mph) 6 km/h (4 mph)
2-3 32 km/h (20 mph) 13 km/h (8 mph)
3-4 48 km/h (30 mph) 19 km/h (12 mph)
4-
D(Overdrive)64 km/h (40 mph) 24 km/h (15 mph)
Maximum downshift speeds1
6-speed transmission
Shift from: Transfer case position (if equipped)2
2H or 4H 4L
D(Overdrive) - 472 km/h (45 mph) 26 km/h (16 mph)
4-3 56 km/h (35 mph) 19 km/h (12 mph)
3-2 32 km/h (20 mph) 13 km/h (8 mph)
2-1 8 km/h (5 mph) 3 km/h (2 mph)
1-LO Only shift to LO when at a stop.
1Use 2H or 4H for 4WD equipped vehicles.2Downshift at lower speeds when driving on slippery surfaces.
Driving tips
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TRAILER TOWING
Refer to your Owner Guide for full details on towing a trailer.
E-Series trailer towing tables
Your vehicle may tow a class I, II or III trailer provided the maximum
trailer weight is less than or equal to the maximum trailer weight listed
for your engine and rear axle ratio on the following charts.
GCWR (Gross Combined Weight Rating)/Trailer Weights
Rear axle
ratioMaximum
GCWR-kg
(lbs.)Trailer Loaded
Trailer Weight -
kg (lbs.)Maximum Frontal
Area Of
Trailer-m
2(ft2)
E-350 Regular Van (9500 GVWR)
3.55 7258 (16000) 4400 (9700) 5.52 (60)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Regular Van (Crew) (9500 GVWR)
3.55 7258 (16000) 4309 (9500) 5.52 (60)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Extended Van (9400 GVWR)
3.55 7258 (16000) 4354 (9600) 5.52 (60)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Extended Van (Crew) (9400 GVWR)
3.55 7258 (16000) 4264 (9400) 5.52 (60)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Regular Wagon (8 passenger) (8700 GVWR)
3.55 7258 (16000) 4264 (9400) 5.52 (60)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Regular Wagon (12 passenger) (8700 GVWR)
3.55 7258 (16000) 4218 (9300) 5.52 (60)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Extended Wagon (12 passenger) (9300 GVWR)
3.55 7258 (16000) 4173 (9200) 5.52 (60)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Extended Wagon (15 passenger) (9400 GVWR)
3.55 7258 (16000) 4128 (9100) 5.52 (60)
Driving tips
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GCWR (Gross Combined Weight Rating)/Trailer Weights
Rear axle
ratioMaximum
GCWR-kg
(lbs.)Trailer Loaded
Trailer Weight -
kg (lbs.)Maximum Frontal
Area Of
Trailer-m
2(ft2)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-350 Cutaway and Chassis Cab (all wheelbases, all GVWRs)
4.10 9072 (20000) 4536 (10000) 5.52 (60)
E-450 and E-550 (all wheelbases, all GVWRs)
All 9072 (20000) 4536 (10000) 5.52 (60)
For high altitude operation reduce GCWR by 2% per 300 meters (1 000
ft) elevation.
To determine the maximum trailer weight designed for your particular
vehicle as equipped, follow the sectionCalculating the load your
vehicle can tow/carryearlier in this chapter.
Your vehicle’s load capacity is designated by weight, not by volume, so
you cannot necessarily use all available space when loading a vehicle.
Distribute the load so that only 10 to 15% of the total is on the tongue.
Tie down the load so that it does not shift and change the weight on the
hitch.
Towing a trailer places an additional load on your vehicle’s engine,
transmission, axle, brakes, tires and suspension. Inspect these
components carefully after any towing operation.
Do not exceed the GVWR or the GAWR specified on the
certification label.
Towing trailers beyond the maximum recommended gross trailer
weight could result in engine damage, transmission/axle damage,
structural damage, loss of control and personal injury.
Driving tips
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Trailer towing tables
F-250
Engine Rear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
7.3L All 9072 (20000) 5670 (12500)
Regular Cab Pickup 4x2 with manual transmission and fifth
wheel
7.3L All 9072 (20000) 6260 (13800)
Regular Cab Pickup 4x2 with automatic transmission and fifth
wheel
7.3L All 9072 (20000) 6305 (13900)
Regular Cab Pickup 4x4 with manual transmission and fifth
wheel
7.3L All 9072 (20000) 6033 (13300)
Regular Cab Pickup 4x4 with automatic transmission and fifth
wheel
7.3L All 9072 (20000) 6078 (13400)
SuperCab Pickup 4x2 with fifth wheel
7.3L All 9072 (20000) 6078 (13400)
SuperCab Pickup 4x4 with fifth wheel
7.3L All 9072 (20000) 5897 (13000)
Crew Cab Pickup 4x2 with manual transmission and fifth wheel
7.3L All 9072 (20000) 5942 (13100)
Crew Cab Pickup 4x2 with automatic transmission and fifth
wheel
7.3L All 9072 (20000) 5987 (13200)
Crew Cab Pickup 4x4 with fifth wheel
7.3L All 9072 (20000) 5806 (12800)
Driving tips
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F-350 Regular Cab Single Rear Wheel Pickup
Fifth
Wheel
OptionRear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
7.3L All 9072 (20000) 5670 (12500)
4x2 with manual transmission and fifth wheel
7.3L All 9072 (20000) 6214 (13700)
4x2 with automatic transmission and fifth wheel
7.3L All 9072 (20000) 6260 (13800)
4x4 with manual transmission and fifth wheel
7.3L All 9072 (20000) 6033 (13300)
4x4 with automatic transmission and fifth wheel
7.3L All 9072 (20000) 6078 (13400)
F-350 Regular Cab Dual Rear Wheel Pickup
Fifth
Wheel
OptionRear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
7.3L All 9072 (20000) 5670 (12500)
4x2 with fifth wheel
7.3L All 9072 (20000) 6078 (13400)
4x4 with manual transmission and fifth wheel
7.3L All 9072 (20000) 5851 (12900)
4x4 with automatic transmission and fifth wheel
7.3L All 9072 (20000) 5897 (13000)
Driving tips
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F-350 SuperCab Single Rear Wheel Pickup
Fifth
Wheel
OptionRear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
7.3L All 9072 (20000) 5670 (12500)
4x2 with fifth wheel
7.3L All 9072 (20000) 6078 (13400)
4x4 with fifth wheel
7.3L All 9072 (20000) 5897 (13000)
F-350 SuperCab Dual Rear Wheel Pickup
Fifth
Wheel
OptionRear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
7.3L All 9072 (20000) 5670 (12500)
4x2 with fifth wheel
7.3L All 9072 (20000) 5942 (13100)
4x4 with manual transmission and fifth wheel
7.3L All 9072 (20000) 5761 (12700)
4x4 with automatic transmission and fifth wheel
7.3L All 9072 (20000) 5806 (12800)
Driving tips
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F-350 Crew Cab Single Rear Wheel Pickup
Fifth
Wheel
OptionRear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
Vehicles without fifth wheel
7.3L All 9072 (20000) 5670 (12500)
4x2 with manual transmission and fifth wheel
7.3L All 9072 (20000) 5942 (13100)
4x2 with automatic transmission and fifth wheel
7.3L All 9072 (20000) 5987 (13200)
4x4 with fifth wheel
7.3L All 9072 (20000) 5806 (12800)
F-350 Crew Cab Dual Rear Wheel Pickup
Fifth
Wheel
OptionRear axle
ratioMaximum GCWR -
kg (lbs.)Maximum
trailer weight -
kg (lbs.)
4x2 without fifth wheel
7.3L All 9072 (20000) 5670 (12500)
4x2 with manual transmission and fifth wheel
7.3L All 9072 (20000) 5806 (12800)
4x2 with automatic transmission and fifth wheel
7.3L All 9072 (20000) 5851 (12900)
4x4
7.3L All 9072 (20000) 5625 (12400)
Driving tips
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