2004 DODGE RAM 2500 DIESEL light

²After the WAIT TO START light goes off, turn the
ignition key to START. Do not press the accelerator
during starting.
²Check to see that there is oil pressure.
²Allow the engine to idle at fast idle for about three
minutes until the manifold heaters have completed
the post-heat cycle.
²Release the parking brake and drive.
NOTE:Engine idle speed will automatically increase to
1000 rpm at low coolant temperatures to improve engine
warm-up.
NOTE:If the engine stalls or if the ignition switch is left
On for more than 2 minutes after the WAIT TO START
light goes out, reset the grid heaters by turning the
ignition switch to Off and the back On. Repeat steps 3
through 7 of the normal starting procedure.
For Extremely Cold Weather Starting (Engine
Temperature Below 0ÉF (- 18ÉC)
In extremely cold weather below 0ÉF (- 18ÉC) it may be
beneficial to cycle the manifold heaters twice before
attempting to start the engine. This can be accomplished
by turning the ignition OFF and then back ON after the
WAIT TO START light has gone off, but before the engine
is started. However, repeated cycling of the manifold
heaters will result in damage to the heater elements or
reduced battery voltage.
NOTE: If multiple pre-heat cycles are used before
starting, additional engine run time may be required to
maintain battery state of charge at a satisfactory level.
²If the engine stalls after the initial start, the ignition
must be turned to the OFF position and then to the ON
position to recycle the manifold heaters.
NOTE:Excessive white smoke and poor engine perfor-
mance will result if manifold heaters are not recycled.
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²Heat generated by the manifold heaters dissipates
rapidly in a cold engine. If more than two minutes
pass between the time the WAIT TO START light goes
OFF and the engine is started, recycle the manifold
heaters by turning the ignition OFF and then back ON.
²If the vehicle is driven and vehicle speed exceeds 18
mph (29 km) before the manifold heater post-heat
(after start) cycle is complete, the manifold heaters will
shut off.
²If the engine is started before the WAIT TO START
light turns off, the preheat cycle will turn off.
²If the engine is cranked for more than 10 seconds, the
post-heat cycle will turn off.
NOTE:Engine idle speed will automatically increase to
1000 rpm at low coolant temperatures to improve engine
warm-up.NOTE:When a diesel engine is allowed to run out of
fuel or the fuel gels at low temperatures, air is pulled into
the fuel system.
You may try priming as described below.
1. Add a substantial quantity of fuel to the tank (5 to 10
gallons) or eliminate the gelled fuel condition.
2. Crank the engine for 1 to 2 seconds. If the engine does
not start, then release the key or starter button back to the
RUN position (do not turn the key back to the OFF
position). The electric fuel transfer pump will continue to
run and purge air from the system for about 25 seconds.
After 25 seconds, attempt to start the engine again.
3. Start the engine using the Normal Starting Procedure.
4. Repeat the procedure if the engine does not start.
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WARNING!
Do not leave children or animals inside parked
vehicles in hot weather. Interior heat build up may
cause serious injury or death.
NORMAL OPERATION
Observe the following when the engine is operating.
²All message center lights are off.
²Check Engine Lamp is off.
²Engine Oil Pressure is above 10 psi (69 kPa) at idle.
²Low Oil Pressure light is off.
²Voltmeter Operation:
²The voltmeter may show a gauge fluctuation if
certain engine temperatures are below 66ÉF (19ÉC).
This cycling operation is caused by the post-heatcycle of the intake manifold heater system. The
number of cycles and the length of the cycling
operation is controlled by the engine control mod-
ule, this time will not exceed 150 seconds. The
needle should then stabilize at the approximate
operation point.
²The cycling action will cause temporary dimming of
the headlamps, interior lamps, and also a noticeable
reduction in blower motor speed.
Cold Weather Precautions
Operation in ambient temperature below 32ÉF (0ÉC) may
require special considerations. The following charts sug-
gest these options:
STARTING AND OPERATING 211
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²the engine coolant has reached normal operating tem-
perature;
²vehicle speed is above approximately 30 mph (48
km/h);
²the ªTOW/HAULº switch has not been activated;
²transmission has reached normal operating tempera-
ture.
The transmission will downshift from Overdrive to Drive
if the accelerator pedal is fully depressed at vehicle
speeds above approximately 35 mph (56 km/h).
Overdrive can be locked out by pressing the ªTOW/
HAULº button located on the selector lever. The ªTOW/
HAULº light will illuminate in the instrument cluster to
indicate that the switch has been activated. Pressing the
switch a second time restores the Overdrive function. If
the ªTOW/HAULº feature is desired, theªTOW/HAULº
button must be pressed each time the engine is started.NOTE:If the vehicle is started in extremely cold tem-
peratures, the transmission may not shift into Overdrive
and will automatically select the most desirable gear for
operation at this temperature. Normal operation will
resume when the transmission fluid temperature has
risen to a suitable temperature. Refer also to the Note
under torque converter clutch, later in this section.
If the transmission temperature gets extremely hot, the
transmission will automatically select the most desirable
gear for operation at this temperature. If the transmission
temperature becomes hot enough the ªTOW/HAULº
and/or TRANS TEMP light(s) may illuminate and the
transmission may downshift out of Overdrive until the
transmission cools down. After cooldown, the transmis-
sion will resume normal operation.
When To Lock Out Overdrive
When driving in hilly areas, towing a trailer, carrying a
heavy load, etc., and frequent 4±3±4 transmission shifting
STARTING AND OPERATING 221
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occurs, press the ªTOW/HAULº button. This will im-
prove performance and reduce the potential for transmis-
sion overheating or failure due to excessive shifting.
Torque Converter Clutch
A feature, designed to improve fuel economy, has been
included in the automatic transmission on your vehicle.
A clutch within the torque converter engages automati-
cally at calibrated speeds. This may result in a slightly
different feeling or response during normal operation in
high gear. When the vehicle speed drops or during
acceleration when the transmission downshifts to second
gear, the clutch automatically disengages.
NOTE:The torque converter clutch will not engage
until the transmission fluid and engine coolant are warm
[usually after 1-3 miles (1.6 ± 4.8 km) of driving]. Because
the engine speed is higher when the torque converter
clutch is not engaged, it may seem as if the transmission
is not shifting into Overdrive when cold. This is normal.Pressing the ªTOW/HAULº button, when the transmis-
sion is sufficiently warm, will demonstrate that the
transmission is able to shift into and out of overdrive.
NOTE:If the vehicle has not been driven in several
days, the first few seconds of operation after shifting the
transmission into gear may seem sluggish. This is due to
the fluid partially draining from the torque converter into
the transmission. This condition is normal and will not
cause damage to the transmission. The torque converter
will refill within five seconds of shifting from Park into
any other gear position.
Manual Transmission ± 5±Speed (NV- 4500) Ð If
Equipped
NOTE:The parking brake should be engaged before
leaving the vehicle, especially on an incline.
222 STARTING AND OPERATING

Truck models with manual transmission are equipped
with a clutch interlocking ignition system. The clutch
pedal must be fully depressed to start the vehicle.
Fully depress the clutch pedal before shifting gears. As
you release the clutch pedal, lightly depress the accelera-
tor pedal. When launching a stationary vehicle, keep the
engine speed low until the clutch is fully engaged.
Damage to the clutch can result from
starting in 2nd or 3rd gear. Use each
gear in numerical order ± do not skip a
gear.
For improved clutch life, all five forward gears should be
used for all load conditions. For steady highway driving
with light acceleration, 5th gear is recommended. To shift
into 5th gear, move the shift lever to the right beyond the
spring pressure point and push it forward. When shiftingfrom 5th to 4th, pull the lever down toward you in one
motion. Do not pull the lever sharply left as you may
shift accidentally into 2nd gear and damage the trans-
mission and engine.
To shift into Reverse, come to a complete stop. Depress
the clutch and pause briefly to allow the gear train to
stop. Move the shift lever from the Neutral position
straight across and back into Reverse.
Never drive with your foot resting on the clutch pedal, or
attempt to hold the vehicle on a hill with the clutch pedal
partially engaged, as this will cause abnormal wear on
the clutch.
Downshifting
Moving from a high gear down to a lower gear is
recommended to preserve brakes when driving down
steep hills. In addition, downshifting at the right time
provides better acceleration when you desire to resume
speed. Downshifting progressively. Do not skip gears to
STARTING AND OPERATING 223
5

avoid overspeeding the engine and clutch. For accelera-
tion at speeds less than 15 mph (25 km/h), 2nd gear is
recommended.
CAUTION!
When descending a hill, be very careful to downshift
one gear at a time to prevent overspeeding the
engine which can cause valve damage.
Manual Transmission Ð 6-Speed (NV-5600) Ð If
Equipped
NOTE:The parking brake should be engaged before
leaving the vehicle, especially on an incline.
Truck models with manual transmission are equipped
with a clutch interlocking ignition system. The clutch
pedal must be fully depressed to start the vehicle.Fully depress the clutch pedal before shifting gears. As
you release the clutch pedal, lightly depress the accelera-
tor pedal. When launching a stationary vehicle, keep the
engine speed low until the clutch is fully engaged.
Damage to the clutch can re-
sult from starting in 2nd or
3rd gear with a loaded ve-
hicle. Use each gear in nu-
merical order ± do not skip a
gear.
This six-speed manual transmission has the same gear
ratios for 1st gear and the two highest gears as appear in
the five-speed transmission. The advantage is that the
middle gears (2nd, 3rd and 4th) have ratios that are closer
224 STARTING AND OPERATING

together and the overall close ratios enable the driver to
optimize available engine power with road speed.
For improved clutch life, all six forward gears should be
used. For steady highway driving with light acceleration,
6th gear is recommended. When shifting from 4th to 5th
gear, apply side effort away and forward without push-
ing hard enough to engage Reverse gear. Shifting from
5th to 6th requires the same side effort or the lever will
return to center resulting in a shift into 4th gear and
damage the transmission, clutch, or engine.
You should use low gear when starting from a standing
position if under a heavy load.
To shift into Reverse, come to a complete stop. Depress
the clutch and pause briefly to allow the gear train to
stop. Move the shift lever from the Neutral position
straight across and up into Reverse.Never drive with your foot resting on the clutch pedal, or
attempt to hold the vehicle on a hill with the clutch pedal
partially engaged, as this will cause abnormal wear on
the clutch.
Downshifting
Moving from a high gear down to a lower gear is
recommended to preserve brakes when driving down
steep hills. In addition, downshifting at the right time
provides better acceleration when you desire to resume
speed. Downshifting progressively. Do not skip gears to
avoid overspeeding the engine and clutch. For accelera-
tion at speeds less than 15 mph (25 km/h), 2nd gear is
recommended.
STARTING AND OPERATING 225
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