coolant temperature CHEVROLET CORVETTE 1998 5.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine To Use the Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord. With
headlamps closed, route the cord in the opening
between the left hand headlamp door and the fender
panel.
Do not pinch the cord when closing the hood.
3. Plug it into a normal, grounded 1 10-volt AC outlet.
A CAUTIO
I
Plugging the cord into an ungrounded outlet
could cause an electrical shock. Also, the wrong
kind of extension cord could overheat and cause
a fire. You could be seriously injured. Plug the
cord into
a properly grounded three-prong
110-volt
AC outlet. If the cord won’t reach, use a
heavy-duty three-prong extension cord rated for
at least
15 amps.
4. Before starting the engine, be sure to unplug and
store the cord as it was before to keep it away from
moving engine parts. If you don’t, it could
be damaged.
How long should you keep the coolant heater plugged in? The answer depends on the outside temperature, the
kind of oil you have, and some other things. Instead of
trying to list everything here, we ask that you contact
your dealer in the area where you’ll be parking your
vehicle. The dealer can give you the best advice for that
particular area.
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Downloaded from www.Manualslib.com manuals search engine NOTICE:
Do not try to force the shift lever into
SECOND (2) or THIRD (3) when the ONE TO
FOUR light comes on.
Do not try to re-engage
FIRST
(1) after starting to shift into
FOURTH
(4). You will damage your
transmission. Shift only from FIRST
(1) to
FOURTH
(4) when the light comes on.
This light will come on when:
0 The engine coolant temperature is higher than 120°F
0 You are going 15 to 19 mph (24 to 31 km/h) and
0 You are at 21 percent throttle or less.
(49"C),
and
Downshifting (Manual Transmission)
Do not downshift into the gear shown below at a speed
greater than shown in the table:
FIRST (1)
.................... 50 mph (80 km/h)
SECOND (2) ................ 74 mph (1 19 km/h)
THIRD (3) ................. 101 mph (163 km/h)
FOURTH (4) ............... 130 mph (209 km/h)
NOTICE:
If you skip more than one gear when you
downshift, or
if you race the engine when you
downshift, you can damage the clutch, driveshaft
or transmission.
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Downloaded from www.Manualslib.com manuals search engine Traction Control System (TCS) Light
Engine Coolant Temperature Gage
I
This light should come on
briefly as you start the
engine. If the light doesn’t
come on then, have it fixed
so it will be ready to warn
you if there’s a problem. This gage shows
the engine
coolant temperature. If the
gage pointer moves into the
shaded area, your engine is
too hot!
If it stays on, or comes on and the DIC shows a
SERVICE TRACTION SYSTEM message when you’re
driving, there’s a problem with your TCS system and
your vehicle needs service. When this light is on, the
system will not limit wheel spin. Adjust your driving
accordingly. If the driver
turns off the Traction Control
System by pressing the button on the console, the TCS
system light will come on and the TRACTION
SYSTEM
OFF message will show on the DIC. This means that your engine coolant has overheated.
If
you have been operating your vehicle under normal
driving conditions, you should pull
off the road, stop
your vehicle and turn
off the engine as soon as possible.
(The larger tic marks are in increments
of 30 O below
220°F (104°C) and in increments of 10 Oabove 220 OF
(104”C).)
In “Problems on the Road,” this manual shows what to do. See “Engine Overheating’’ in the Index.
2-81

Downloaded from www.Manualslib.com manuals search engine I NOTICE:
Damage to your engine from neglected oil
problems can be costly and
is not covered by
your warranty.
Security Light
This light comes on to
remind you to
arrn your
I SECURITY
theft-deterrent system. If it
comes on and stays on when
I
your ignition is on, there
may be a problem with your
theft-deterrent system.
Check Gages, Light
CHECK
GAGES
This light will come on
briefly when you are
starting the engine. If the
light comes on and stays on
while you are driving, check
your gages to see
if they are
in the warning areas.
This light can come on for the following reasons:
0 Low Oil Pressure
0 High Coolant Temperature
0 High or Low Battery Voltage
0 Low Fuel Level
See “Universal Theft-Deterrent” and “PASS-Key
System” in the Index.
2-85

Downloaded from www.Manualslib.com manuals search engine Driver Information Center (DIC)
The Driver Information Center (DIC) will display
information about how your vehicle is functioning, as
well as warning messages if a system problem is
detected. The DIC display area is located in the
instrument cluster below the speedometer and
tachometer, directly above the steering column.
The following buttons are on the DIC control panel which is located to the right of the cluster:
1 FUEL: Press this button to display fuel information
such as fuel economy and range.
2 GAGES: Use this button to display gage information
like oil pressure and temperature, coolant temperature,
transmission fluid temperature, battery voltage and
fronthear tire pressures.
3 TRIP: Use this button to display your total and trip
miles, the elapsed time function, your average speed and
the oil life.
4 OPTIONS: This button allows you to choose personal
options available with your vehicle such as security,
door locks, easy entry seats and language.
5 EM: Use this button to change the display between
English and metric units.
RESET: This button, used along with the other buttons,
will reset system functions and turn
off or acknowledge
messages on the DIC.
At the top of the DIC control buttons is a light sensor.
Be sure not to block the sensor or your lighting
functions may be disrupted.
2-87

Downloaded from www.Manualslib.com manuals search engine Press the GAGE button again to display the oil
temperature, such as:
OIL TEMP 234 O F or
OILTEMP 112 O C
Press the GAGE button again to display the coolant
temperature, such as:
COOLANT TEMP 123 O F or
COOLANTTEMP51 O C
Press the GAGE button again to display the transmission
fluid temperature (automatics only), such as:
TRANS FLUID 123 O For
TRANS FLUID 51 O C
Press the GAGE button again to display the battery
voltage, such as:
0 BATTERY 13.5 VOLTS
Press the GAGE button again to display the tire pressure
for the front tires (left and right), such as:
FRONT L34 R33 PSI or
FRONT L 234 R228 kPa
Press the
GAGE button again to display the tire pressure
for the rear tires (left and right), such as:
REAR L34 R33 PSI or
0 REAR L234 R228 kPa

Downloaded from www.Manualslib.com manuals search engine If the engine coolant exceeds 255 “F (124”C), this
message is displayed. If you have been operating your
vehicle under normal driving conditions, you should
pull off from
the road, stop your vehicle and turn off the
engine as soon as possible. You can monitor the coolant
temperature with the GAGES button on the DIC or the
engine coolant gage on the instrument panel cluster. See
“Engine Overheating” in the Index.
HIGH OIL TEMPERATURE REDUCE ENGINE
RPM: You will hear four chimes when this message is
displayed. To acknowledge the warning, press the
RESET button. After you press the RESET button, a
message will be displayed and you will hear a chime
every minute until this condition changes. If you do not
press RESET, the message will remain on the digital
display until the condition changes.
If the engine oil temperature exceeds
320°F (1 60” C),
this message is displayed. You should check the engine
coolant temperature and engine oil level. If your engine
is too hot, see “Engine Overheating’’ in the Index. Your
vehicle may need service,
so see your dealer. You can
monitor the oil temperature with the GAGES button on
the DIC.
HIGH TRANS TEMP: You will hear four chimes
when this message is displayed. To acknowledge this
warning, press the RESET button. After you press the
RESET button, the message will be displayed every
10 minutes until the condition changes. If you do not
press RESET, the message remains on the display until
the condition changes.
If the transmission fluid temperature rises above 263°F
(128°C) or rises rapidly, this message is displayed. The
transmission may shift gears or apply the torque
converter clutch to reduce the fluid temperature. Driving
aggressively or driving on long hills can cause the
transmission fluid temperature to be higher than normal.
If this message appears, you may continue to drive at a
slower speed. You should also monitor the transmission
fluid temperature and allow it to cool to at least 230°F
(1 10°C). The transmission fluid temperature can be
monitored with the GAGES button on the DIC. See
“Automatic Transmission Fluid” in the Index. You
should also check the engine coolant temperature.
If it is
also hot, see “Engine Overheating” in the Index.
If the HIGH TRANS TEMP message is displayed
during normal vehicle operation on flat roads, your
vehicle may need service. See your dealer for an
inspection.
2-102

Downloaded from www.Manualslib.com manuals search engine a
+' LOWER: This setting directs most of the air
through the lower ducts to the floor area of the vehicle with some of the air also directed toward the windshield
and side window vents.
+# DEFOG: This setting divides the air between the
windshield and lower outlets with a small amount directed toward the side window vents. This is useful
when fog appears on the windshield or side glass due to
rain or snowy conditions.
DEFROST Use this setting to quickly remove fog
or frost from the windshield. This setting directs most of
the airflow to the windshield with
a small amount
directed toward the lower and side window outlets.
Mode Buttons
These buttons control the air intake, the air conditioning and the rear window defogger operation.
FRESH AIR: Press this button and it will bring
outside air into your vehicle. The light on the button will
come on when operating. Use this setting while trying to
defrost or defog windows to help clear moisture.
RECIRCULATE: Press this button to limit the
amount of fresh air entering your vehicle by
recirculating most of the
air inside your vehicle. The
light on the button will come on when operating. This
setting is helpful when you are trying to cool the air
quickly or to limit odors entering your vehicle.
RECIRCULATE cannot be used while in the DEFROST
or
DEFOG modes.
e A/C: This button turns the air conditioning
compressor
off or on under most conditions. The light
on the A/C button comes on when the compressor is
operating. The air conditioning does not operate at
temperatures below approximately
35 OF to 40°F (2" C
to 4°C). The air conditioning cools and dehumidifies the
air coming into the vehicle. The air conditioning cannot
be turned
off in DEFROST as it helps to remove
moisture from the vehicle. It also helps to keep the
windows clear.
The air conditioning may be forced
off at high engine
speeds
or high engine oil or coolant temperatures.
3-3

Downloaded from www.Manualslib.com manuals search engine When adjusting the temperature, start with a driver-set
temperature of
73°F (23 "C) until you determine your
comfort zone. If you choose
60°F (16"C), the system
will remain at maximum cooling and will not
automatically adjust fan speed or air delivery. If you
choose
90°F (32"C), the system will remain at
maximum heating and will not automatically adjust fan
speed or air delivery. Choosing either maximum setting
will not cause the system to heat or cool any faster.
Turning the knob past either maximum setting has no
effect on the operation of the system.
Passenger Temperature Offset
The PASSENGER knob changes the temperature on the
passenger's side of the vehicle. When the knob is in the
12 o'clock position, the passenger's temperature is the
same as the driver's. Turn the knob to the right for
warmer air
on the passenger's side, to the left for cooler
air. If the driver-set temperature is set at
60°F (1 6 " C) or
90 OF (32 " C), turning the passenger knob has no effect
because the system is locked at a maximum setting.
Automatic Operation
Press the AUTO button to place the entire system in the
automatic mode. After a five second display of the current settings, only the word
AUTO and the outside
temperature will be shown on the digital display. The
system will operate to achieve your comfort set
temperature as quickly as possible. If you have set the
driver temperature at
60°F (16°C) or 90°F (32"C), the
system will not operate automatically until a different
temperature is selected. The AUTO control system
works best with the windows up and the removable roof
installed or the convertible top up.
A Typical Cold Weather Example:
Your vehicle has been parked outside overnight in cold
weather (below
32 OF/ 0 " C) and you have set the driver
temperature at
73°F (23°C) and have selected the AUTO
mode. The system will automatically adjust the
temperature output to maximum heating. The fan will start
at a low speed. This is to avoid blowing cold
air into the
vehicle. The length of the delay depends on the amount of
time since the engine was last started, the outside
temperature and the engine coolant temperature. As the
coolant warms up, the fan speed will gradually increase.
Air will flow to the floor with some air to the windshield
to prevent fogging under most normal conditions.
3-5

Downloaded from www.Manualslib.com manuals search engine Air Conditioning Heating
On
very hot days, your vehicle will cool down more
quickly and economically if you open the windows long
enough to let hot inside
air escape. Then keep your
windows closed in order to allow the air conditioning to
work best. Maximum cooling will occur when the
RECIRCULATE setting is operating, airflow direction is
in the upper mode, and the temperature control knob (on
a manual climate control system) is turned all the way to
the blue area. These settings will be selected by the
Automatic Electronic Dual Climate Control System if
operating in AUTO when maximum cooling is required.
When the air conditioning is on, you may sometimes
notice slight changes in your vehicle’s engine
performance and power. This is normal. The system is
designed to .help fuel economy while maintaining the
desired cooling level.
The
air conditioning removes moisture from the air, so you
may notice water dripping fi-om under your vehicle when
it is idling or after it has been turned
off. This is normal. The
heater works best
if you keep your windows closed.
Maximum heating will occur when airflow direction is
in the lower mode and the temperature control knob (on
a manual climate control system) is all the way
in the
red area. These settings will be selected by the
Automatic Electronic Dual Climate Control System if
operating in AUTO when maximum heating is required.
The BI-LEVEL setting is designed for use on sunny days
when the
air is only moderately warm or cool. On days
like these, the sun may adequately warm your upper body,
but your lower body may not
be warm enough. The
BI-LEVEL setting will direct cooler airflow to
your upper
body and warmer
air to the floor area.
If you have the optional engine coolant heater and use it
during cold weather
0°F (- 18 “C) or lower, your heating
system will provide heat more quickly because the
coolant is already warmed. See “Engine Coolant Heater”
in the Index.
3-10