Dodge 2006 Ram Pickup 3500 - Manual (Page 259)

• Voltmeter Operation:
• The voltmeter may show a gauge fluctuation if certain
engine temperatures are below 66°F (19°C). 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, this time
will not exceed 150 seconds. The needle should then
stabilize at the approximate operation point.
• 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 considerations. The following charts sug-
gest these options:
Fuel Operating Range
*No. 1 diesel fuel should only be used where extended
arctic conditions (-10°F/-23°C) exist.
NOTE:
• Use of Climatized Diesel Fuel or Number 1 Diesel Fuel
results in a noticeable decrease in fuel economy.
• Climatized Diesel Fuel is a blend of Number 2 and
Number 1 Diesel Fuels which reduces the temperature
at which wax crystals form in fuel.
STARTING AND OPERATING 259
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