RAM 2500 2019, Руководство пользователя

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STARTING AND OPERATING
142
Extreme Cold Weather
The Cummins diesel engine is equipped with
several features designed to assist cold
weather starting and operation:

The engine block heater is a resistance
heater installed in the water jacket of the
engine just above and behind the oil filter.
It requires a 110–115 Volt AC electrical
outlet with a grounded, three-wire exten
-
sion cord.
NOTE:
The engine block heater cord is a factory
installed option. If your vehicle is not
equipped, heater cords are available from
your authorized Mopar dealer.

A 12 Volt heater built into the fuel filter
housings aid in preventing fuel gelling. It
is controlled by a built-in thermostat.

A heated intake air system both improves
engine starting and reduces the amount of
white smoke generated by a warming
engine.
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
number of cycles and the length of the
cycling operation is controlled by the engine
control module. Post-heat operation can run
for several minutes, and then the electrical
system and voltmeter needle will stabilize.
The 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
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
ambient 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
combustion 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
2019_RAM_2500_3500_UG_USA=GUID-8BBFE451-BF24-4E82-808A-AE2460D39A05=1=en=.book Page 142