Chevrolet 2007 Kodiak, Руководство пользователя

Страница: 109 / 430

The engine idle speed will return to normal once
the following conditions are met:
•
Once engine coolant temperature reaches
about 150°F (65°C).
•
The intake temperature reaches a
certain level.
The high idle speed will be temporarily interrupted
and the engine speed will return to normal if
any of the following conditions occur:
•
The brake pedal is applied.
•
The accelerator pedal is pressed.
•
The automatic transmission is shifted out of
PARK (P) or NEUTRAL (N).
•
The clutch pedal on the manual transmission
is pressed.
•
Vehicle speed is detected.
Once these conditions no longer exist, the engine
idle speed will slowly increase to high idle after
the normal delay, if the conditions for engine
coolant temperature and air intake temperature
are still met.
Engine Checks Before Operating
When you have started your engine, let it run for
20 to 30 seconds before you put a load on the
engine. But do not leave the vehicle while
the engine is running.
Avoid unnecessary idling of diesel engine
equipped vehicles.
If the engine idles too long, the temperature of the
engine coolant will fall below the normal operating
range. Low engine operating temperature
causes several conditions which affect engine
operation and reduce engine life.
The engine should be permitted to go through a
warm-up period. Operate the vehicle at a minimum
of 600 rpm during the warm-up period. During
this period and during operation, the following
observations should be made.
During this warm-up period, check your warning
lights and gages:
•
If oil pressure does not begin to rise within
15 seconds of starting, stop the engine
and find the cause. See
Oil Pressure Gage on
page 175 for more information.
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