1998 CHEVROLET CORVETTE cooling

Downloaded from www.Manualslib.com manuals search engine If your vehicle is equipped with a convertible top and
you have lost battery power, use the manual release
cable to open the trunk lid.
To access the cable, remove
the center access panel located in the rear of the trunk
area. (See “Storage Compartments” in the Index
for
more information.)
Pull the cable straight down to release the trunk lid.
It can be dangerous to drive with the hatcldtrunk
lid open because carbon monoxide
(CO) gas can
come into your vehicle. You can’t see or smell
CO.
It can cause unconsciousness and even death.
If you must drive with the hatcWtrunk lid open
or if electrical wiring or other cable connections
must pass through the seal between the body and
the hatcldtrunk lid:
Make sure all windows are shut.
Turn the fan on your heating or cooling
system to
its highest speed with the setting
on BI-LEVEL or VENT. That will force
outside air into your vehicle. See “Comfort
Controls” in the Index.
instrument panel, open them all the way.
0 If you have air outlets on or under the
See “Engine Exhaust” in the Index.
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Downloaded from www.Manualslib.com manuals search engine Comfort Controls
This section tells you how to make your air system work
for you. Your comfort control system uses
ozone-friendly
R- 134a refrigerant.
With these systems, you can control the heating, cooling and ventilation in your vehicle. Your vehicle also has
a flow-through ventilation system described later
in
this section.
Manual Comfort Controls
Fan Knob
The left knob is the fan knob and selects the force of air
you want. Turn the knob to the right to increase fan speed
and to the
left to decrease fan speed. The fan must be
turned on for the
air conditioning compressor to operate.
Temperature Knob
The center knob controls the temperature of the air
coming through the system.
Turn it to the left (toward
the blue area) for cooler air. Turn it to the right (toward\

the red area) for warmer air.
Mode Knob
The right knob selects the direction of where the air will
enter the vehicle.
/.I UPPER: This setting directs most of the air
through the instrument panel outlets with a very small
amount of air directed to the lower outlets.
+H BI-LEVEL: This setting directs air into your
vehicle in two ways. Cooler air
is directed toward your
upper body through the instrument panel outlets, while
warmer air is directed through the lower outlets.
*e
+e

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 As the interior of the vehicle warms up to your comfort
set temperature, the fan speed will decrease and the
temperature output may become cooler.
If the interior
temperature continues to warm up due to heating from
the sun or outside temperature increases, the system
may switch to other air delivery modes (typically
DEFOG or BI-LEVEL).
A ljpical Hot Weather Example:
Your vehicle has been parked outside all day in hot
weather (above
7OoF/ 21 O C) and you have set the driver
temperature at
73 OF (23 "C) and have selected the
AUTO mode. The system will automatically adjust the
temperature output to maximum cooling. The blower
will start at a low speed momentarily to push the hot air
to the floor of the vehicle and then go to a higher blower
speed with cold airflow out of the instrument panel
outlets.
A small amount of airflow will continue through
the lower ducts to cool the
floor area.
The air intake may start in the recirculated mode for
maximum cooling performance.
As the interior of the
vehicle cools down to your comfort set temperature, the
fan speed will decrease and the temperature output may
become warmer. The air intake may shift from
recirculation to fresh air mode.
If the interior continues to
cool due to a decrease,,,in the amount of heat the
vehicle is absorbing from the sun or a decrease
in the
outside temperature, the system could switch to other air
delivery modes (typically BI-LEVEL or DEFOG).
Manual Settings
With the Dual Zone Electronic Climate Control, there
are several manual settings you can use to control the
system and override the
AUTO operation. You can
program the fan speed,
air delivery mode, air intake
mode and control the air conditioning operation using
these settings. The system will still determine the
temperature output level based on the driver-set
temperature and the passenger temperature offset.
% FAN SPEED: Press the button with the fan switch
on it to manually lock
in the current fan speed and to
stop the automatic fan speed control. Pressing the
arrows will delete
AUTO from the digital display. The
fan graphics with the fan speed bars will be shown.
To
increase the fan speed so that more air flows into the
vehicle, press the
UP arrow on the fan switch. To
decrease the fan speed and airflow, press the DOWN
arrow. The
AUTO button must be pressed to return to
the automatic fan control.

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

Downloaded from www.Manualslib.com manuals search engine If you drive regularly in steep country, or if you’re
planning to visit there, here
are some tips that can make
your trips safer and more enjoyable.
0
0
Keep your vehicle in good shape. Check all fluid
levels and also the brakes, tires, cooling system and
transmission. These
parts can work hard on
mountain roads.
Know how to
go down hills. The most important
thing to know is this: let your engine do some of the
slowing down. Shft to a lower gear when you
go
down a steep or long hill.
If you don’t shift down, your brakes could get so
hot that they wouldn’t work well. You would then
have poor braking
or even none going down a hill.
You could crash. Shift down to let your engine
assist your brakes on
a steep downhill slope.
I li
’ A CAUTION:
II
r
Coasting downhill in NEUTRAL (N) or with the
ignition
off is dangerous. Your brakes will have
to do all the work
of slowing down. They could
get
so hot that they wouldn’t work well. You
would then have poor braking or even none going
down a hill. You could crash. Always have your
engine running and your vehicle in gear when
you go downhill.
e
e
e
Know how to go uphill. You may want to shift down
to a lower gear. The lower gears help cool your engine
and transmission, and you can climb the hill better.
Stay in your own lane when driving on two-lane
roads in hills or mountains. Don’t swing wide or cut
across the center of the road. Drive at speeds that let
you stay in your own lane.
As you go over the top of a hill, be alert. There
could be something in your lane, like a stalled
car
or an accident.
4-23

Downloaded from www.Manualslib.com manuals search engine Section 5 Problems on the Road
Here you’ll find what to do about some problems that can occur on the ro\
ad.
5-2
5-3
5-8 5-13 Hazard Warning Flashers
Jump Starting
Towing Your Vehicle
Engine Overheating
5-16 Cooling System
5-22 If a Tire Goes Flat
5-22 If You’re Stuck: In Sand, Mud, Ice or Snow
5-1

Downloaded from www.Manualslib.com manuals search engine Cooling System
When you decide it’s safe to lift the hood, here’s what
you’ll
see:
An electric engine cooling fan under the hood can
start up even when the engine
is not running and
can injure
you. Keep hands, clothing and tools
away from any underhood electric fan.
I I
If the coolant inside the coolant surge tank is boiling,
don’t do anything else until it cools down.
A. Electric Engine Fans
B. Coolant Surge Tank
5-16