radiator CHEVROLET CORVETTE 1993 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine Comfort Controls & Audio Systems
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1. 140
Automutic Ekctronic
Climate Control (OPTION)
With this system, you can control the
ventilation, heating
and air conditioning
in your vehicle, or you can use the
automatic setting.
Your vehicle also has
the flow-through ventilation system
described later
in this section.
The digital screen displays the outside
temperature, the inside temperature
setting, and the fan speed.
If the inside
temperature is changed,
or if the system
is changed from
OFF to any mode, the
inside temperature setting will be
displayed for several seconds before the
outside temperature is again displayed.
The
air conditioner compressor operates
in all air conditioning positions, and in
(@ (Defrost) when the outside
temperature is above freezing.
When
the air conditioner is on, you may
sometimes notice slight changes in your
vehicle's engine speed and power. This
is normal, because the Automatic
EIectronic Climate Control system
is
designed to cycle the compressor on
and off to keep the desired cooling and
to
help your vehicle's fuel economy.
TEMP SET: This control sets the
interior temperature you want. Press
V to lower the inside temperature
setting; press
A to raise the setting.
The temperature
you set will be
displayed on the digital screen.
Once you set the temperature you want,
the system will try to maintain this temperature,
whether
you are using the
heating
or the cooling controls.
However, if you set the temperature for
60°F (16°C) or 90°F (3Z°C), the fan will
stay on 3p udess you select a
different speed.
Your Automatic Electronic Climate
Control system
has three sensors. The
sun load sensor on top of the dashboard
detects increased interior temperature
caused by sunlight.
To keep you
comfortable, it reduces the interior
temperature
by as much as 5°F (3°C)
below the setting on the digital screen.
The outside air temperature sensor,
located on the right
side of the upper
radiator support
in the grille opening,
reads the outside temperature.
This is
what you usually see on the display.

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Cooling System
When you decide it% safe to lift the
hood, heri’s.what you’ll see-:
(A) Coolant.recovery tank
(B) Coolant-high fillreservoir with
(C) Electric engine fans
pressure c~p
If the caulant inside the csolaht
recovery tank is boiling, don’t do;
anything else until it cuols dam.
When it is cwl, rtmove- the .coolant
reqvery tank cap and I-ook at - the
dipstick. The
Coolant level should be at
or above-COLD.
If it isn”t, you may have a leak in the
radiator hoses, heater hoses, radiator,
water pmp, vapor vent pipes or hoses
or coolant pump.

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Engine Overheating (COW.)
A Heater adradiator hoses, ’.-
.and oiher enginelparts, can
.be.very-hot. Don’t touch them ...If
you do, you canbe burned.
Don’t run the engine
if there is a
leak. If
you run the engine,.it could
lose all coolant. That could cause
an engine fire, and you could be
burned. Get any leak fixed before
you drive the vehicle.
216
If there seems to be no leak, check to
see
if the electric engine fans are
running.
If the engine is overheating,
both fans
should be running. If they
aren’t, your vehicle needs service.
How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but
the coolant level isn’t at
or above
COLD,
add a 50/50 mixture of clean
water (preferably distilled) and a proper
antifreeze at the coolant recovery tank.
(See the
Index under Coolant for more
information about the proper coolant
mix. )

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How to Add Coo/ant to the Coolant
Recovery Tank (CONT.)
CAUTlON
Steam and scalding liquids
from a hot cooling system
can blow out and
burn you badly.
They are under pressure, and if you
turn the.coolant high fill reservoir
pressure cap-even a little-they
can come out at high speed. Never
turn the cap when the cooling
system, including the coolant
high
fill reservoir pressure cap, is hot.
Wait for the cooling system and
coolant high fill reservoir pressure
cap to cool if you ever have to turn
the pressure cap.
How fa Add Coolant to the Coolant
High FM Reservoir-LT1 On/y 1. You can remove the coolant high fill
reservoir pressure cap when the
cooling system, including the coolant
high fill reservoir pressure cap and
upper radiator hose,
is no longer hot.
Turn the cap slowly to the left until it
first
stops. (Don't press down while
turning the pressure cap.)
If you hear a hiss, wait for that to stop. A
hiss means there is still some pressure
left.
.n
- ,.

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How to Add Coolant to the Coolant
High Fi/l Reservoir-LT5 On/y
1. YQU can remove, the coolant high fill
reservoir pressure cap when the
cooling system, including.the coolant
high fill reservoir pressure cap and
upper radiator hose, is no longer hot.
Turn the pressure cap slowly to the
left until it first stlaps. (Don't press
down while turning the pressure
cap .)
If you hear a hiss, wait for that to stop.
A hiss- means ther,e is still some pressure
left.
122
2. Then keep turning. the pressure cap,
-but
now push down as you turn it.
Remove the pressure. cap.
3. Fill the coolant high fill reservoir with
the proper mix, .up to the base of the
filler neck.

Downloaded from www.Manualslib.com manuals search engine 4. Then fill the coorant recovery tam to
the HOT mark an the.dip$tick..
-5.. Put the cap back on the- coolant.
recovery tank, but leave the coolant
high fill reservoir pressure cap off.
6. Start the engine and let it m until
y~u can feel the upper radiator hose-
getting hot. Watch out for the engine-
fans.
7. By this time the coolant level inside
the coolant high fill reservoir filler
neck may be -lower. if the level is
lower, add more of the proper mix
thxough the filler neck until the level
reaches..the base of the Tiller neck.

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Adding Caalant-LT5 Enghe
(CONT,)
2. Add the coolant mix to the coolant
high fill reservoir until the level
reaches the
base of the res&voir filler
neck
3. With the pressure cap still removed,
run the engine until the upper
radiator
hose is hot. With the engine
at idle, add coolant
mix again, if
needed, to bring the level back up to
the reservoir filler neck base.
4. Put on the pressure cap. When it’s
tight, the arrows on the cap should
line up with the overflow tube on the
reservoir filler neck.
Coolant High Fill Reservoir
Pressure Cap
I
When you replace your coolant high fill
reservoir pressure cap, an AC@ cap is
recommended. Engine
coolant temperature
is
controlled by a thermostat in the engine
coolant
system. The thermostat sfops
the flow of coolant through the radiator
until the .coolant reaches a preset
temperature.
When you replace your thermostat, -an
AC* thermostat is recommended.