freightliner WALK-IN VAN CHASSIS Operator's Manual page 119

Coolant Temperature Gauge
NOTICE
A sudden increase in coolant temperature may
indicate engine or cooling system failure. Bring
the vehicle to a safe stop and investigate the
cause to prevent further damage. Do not operate
the engine until the cause has been determined
and corrected.
During normal engine operation, the coolant tem-
perature gauge should read 200 to 205°F (93 to
96°C). See Fig. 15.24. If the temperature remains
below 160°F (71°C) or exceeds 235°F (113°C), in-
spect the cooling system to determine the cause.
See the vehicle workshop manual for troubleshooting
and repair procedures.
The coolant temperature gauge is very important.
See Fig. 15.24. If the coolant temperature rises
above 253°F (123°C), the check engine and stop
engine lights will illuminate, and the buzzer will
sound. At this point, the engine will derate and idle
WARNING MESSAGES
Msg Displayed for 5 Sec. /
Display Next Entry in
/
Warning Message List
st
Display 1 Message
in Warning
Message List
Screen AN
Warning Message
No Warning
Messages in List /
02/06/2012
Fig. 15.18, Warning Messages
GM Gasoline Engine
WARNING
Any Button Press
H*
DISPLAY
MESSAGES
f040799
speed will increase, to speed up the cooling fan and
water pump to cool the engine.
15.20