Engine Warm-Up
Avoid full throttle operation when the engine is cold. When
starting a cold engine, bring the engine up to operating
speed slowly to allow the oil pressure to stabilize as the
engine warms up.
NOTE:
High-speed, no-load running of a cold engine can
result in excessive white smoke and poor engine perfor-
mance. No-load engine speeds should be kept under 1,200
RPM during the warm-up period, especially in cold ambi-
ent temperature conditions.
Your vehicle is equipped with a turbo speed limiter, this
feature limits the engine speed to 1,200 RPM when engine
coolant temperatures are below 70°F (21°C). This feature is
designed to protect the turbocharger from damage and will
only operate in PARK or NEUTRAL.
If temperatures are below 32°F (0°C), operate the engine at
moderate speeds for five minutes before full loads are
applied.
NOTE:
If ambient temperatures are low and the coolant
temperature is below 180°F (82°C), the engine idle speed
will slowly increase to 1,000 RPM after two minutes of idle,
if the following conditions are met:
•
Foot is off brake pedal and throttle pedal.
•
Automatic transmission is in PARK.
•
Vehicle speed is 0 mph (0 km/h).
•
Applying the throttle will cancel fast idle.
•
Operating the exhaust brake at idle will greatly improve
warm up rate and will help keep the engine close to
operating temperature during extended idle.
Engine Idling
Avoid prolonged idling, long periods of idling may be
harmful to your engine because combustion chamber tem-
peratures 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 automatically 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
engine 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
5
STARTING AND OPERATING
133
Summary of Contents for RAM 2017
Page 1: ...O W N E R S M A N U A L 2 0 1 7 D I E S E L S U P P L E M E N T R A M T R U C K ...
Page 3: ...RAM DIESEL SUPPLEMENT RAM 1500 3 RAM 2500 3500 4500 5500 85 INDEX 217 ...
Page 4: ......
Page 5: ...RAM 1500 ...
Page 6: ......
Page 8: ......
Page 9: ...INTRODUCTION CONTENTS 䡵 A MESSAGE FROM FCA US LLC 8 1 ...
Page 14: ......
Page 54: ......
Page 78: ......
Page 86: ...84 MAINTENANCE SCHEDULE ...
Page 87: ...RAM 2500 3500 4500 5500 ...
Page 88: ......
Page 90: ......
Page 91: ...INTRODUCTION CONTENTS 䡵 A MESSAGE FROM FCA US LLC 90 1 ...
Page 102: ......
Page 171: ...WHAT TO DO IN EMERGENCIES CONTENTS 䡵 JUMP STARTING 170 With Portable Starting Unit 172 6 ...
Page 210: ......
Page 219: ...INDEX 8 INDEX 217 ...