2007 Dodge Ram 3500 Pickup Owner Manual Diesel - Page 260
2007 Dodge Ram 3500 Pickup Manual
Page 260 highlights
260 STARTING AND OPERATING • 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 suggest these options: Fuel Operating Range * No. 1 diesel fuel should only be used where extended arctic conditions (-10°F/-23°C) exist.