Dodge RAM CHASSIS CAB2018, Руководство пользователя

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NORMAL OPERATION — 6.7L DIESEL
ENGINE
Observe the following when the engine is
operating.
• All message center lights are off.
• Malfunction Indicator Light (MIL) is off.
• Engine oil pressure is above 10 psi
(69 kPa) at idle.
• Voltmeter operation:
The voltmeter may show a gauge fluctuation
at various engine temperatures. This cycling
operation is caused by the post-heat cycle of
the intake manifold heater system. The num-
ber of cycles and the length of the cycling
operation is controlled by the engine control
module. Post-heat operation can run for sev-
eral minutes, and then the electrical system
and voltmeter needle will stabilize.
The cycling action will cause temporary dim-
ming of the headlamps, interior lamps, and
also a noticeable reduction in blower motor
speed.
Cold Weather Precautions
Operation in ambient temperature below
32°F (0°C) may require special consider-
ations. The following charts suggest these
options:
Winter Front Cover Usage
A winter front or cold weather cover is to be
used in ambient temperatures below 32°F
(0°C), especially during extended idle condi-
tions. This cover is equipped with four flaps
for managing total grille opening in varying
ambient temperatures. If a winter front or
cold weather cover is to be used the flaps
should be left in the full open position to
allow air flow to the charge air cooler and
automatic transmission oil cooler. When am-
bient temperatures drop below 0°F (-17°C)
the four flaps need to be closed. A suitable
cold weather cover is available from your
Mopar dealer.
Engine Idling
Avoid prolonged idling, long periods of idling
may be harmful to your engine because com-
bustion chamber temperatures can drop so
low that the fuel may not burn completely.
Incomplete combustion allows carbon and
varnish to form on piston rings, engine valves,
and injector nozzles. Also, the unburned fuel
can enter the crankcase, diluting the oil and
causing rapid wear to the engine.
If the engine is allowed to idle or the truck is
driven on low engine speed drive cycles for
more than 2 hours, the system will automati-
cally enter an emissions operating mode that
will increase the engine idle speed to
900 RPM (1050 RPM for Chassis Cab).
While in this mode, which is designed to help
maintain the diesel particulate filter, the en-
gine idle speed will return to normal when the
brake pedal is applied. A small change in
engine tone or a slight change in engine
performance while accelerating may also be
noticeable
at speeds below 20 mph
(32 kmh). This operating mode may last for
up to an hour of idle time, or around 20 min-
utes of driving time.
Your truck may have been ordered with an
optional voltage monitoring idle up feature. If
a load is placed on the electrical system while
the truck is in park, this feature will attempt
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