•
If the engine is equipped with an exhaust brake,
operating the exhaust brake at idle will greatly im-
prove 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
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, under some conditions
the idle speed may increase to 900 RPM then return to
normal idle speed. This is normal operation.
NOTE:
For EVIC messages related to the vehicle’s
exhaust system, refer to “Maintenance Procedures/
Intervention Regeneration Strategy – EVIC Message Pro-
cess Flow” in “Maintaining Your Vehicle” for further
information.
Idle-Up Feature – Automatic Transmission Only
The driver-controlled high idle speed feature will help
increase cylinder temperatures and provide additional
cab heat, however, excessive idling may still cause the
exhaust aftertreatment system to not properly regenerate.
Extended periods of idle time should be avoided.
The Idle-Up feature uses the speed control switches to
increase engine idle speed and quickly warm the vehi-
cle’s interior.
1. With the transmission in PARK, the parking brake
applied, and the engine running, press the speed control
switch to the ON position, then press the SET switch.
44
STARTING AND OPERATING
Содержание Ram 2012
Страница 1: ...07 R a m T r u c k O W N E R S M A N U A L 2 0 1 2 D i e s e l S u p p l e m e n t ...
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Страница 5: ...INTRODUCTION CONTENTS 䡵 A Message From Chrysler Group LLC 4 1 ...
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Страница 16: ...INSTRUMENT CLUSTER 14 UNDERSTANDING YOUR INSTRUMENT PANEL ...
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Страница 93: ...WHAT TO DO IN EMERGENCIES CONTENTS 䡵 Jump Starting 92 With Portable Starting Unit 95 5 ...
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Страница 165: ...INDEX 8 ...
Страница 173: ...Chrysler Group LLC 12D241 226 AD 4th Edition Printed in U S A ...