coolant level CHEVROLET CORVETTE 1994 4.G Owners Manual

Downloaded from www.Manualslib.com manuals search engine How to Use This Manual
Normal Air Conditioning
Bi-Level Vent
Heater
. . .10
These symbols are used on warning and
indicator lights:
Engine Coolant Temperature
Battery Charging System
I-1
Fuel
Engine Oil Pressure
Engine Oil
Temperature
Brake
Anti-Lock Brake System
(@I
Engine
CJ
Here are some other symbols you may see:
Hatch Release
Hood Release
Lighter Horn
Speaker
Acceleration Slip Regulation

Downloaded from www.Manualslib.com manuals search engine I NOTICE:
Your engine is designed to work with
the electronics in your vehicle. If you
add electrical parts or accessories,
you could change the way the fuel
injection system operates. Before
adding electrical equipment, check
with your dealer. If you don’t, your
engine might not perform properly.
If you ever have to have your vehicle
towed, see the part
of this manual
that tells how to do it without
damaging your vehicle. See “Towing
Your Vehicle” in the Index.
Engine Power Switch (ZR-I)
The LT5 engine in your ZR-1 has two sets
of intake runners and fuel injectors. The
primary set can be run alone for normal
engine power, or both sets can be used
for
full engine power.
Full power gives you extra power for
highway touring and off-road sports use
and reserve power for passing. With
normal power, you’ll notice less engine
and exhaust noise. To
change the power setting, put your
engine power key into the switch. Turn
the key to the setting you want and let
go
The key will return to the center position.
Your ZR-1 is able to run at full power
under the following conditions:
The engine coolant and oil
temperatures are greater than
68 OF
(20°C) but less than 302°F (150°C).
e System voltage is greater than ten
e The “SERVICE ENGINE SOON’
volts.
light is not on.
You can switch the setting at engine
speeds up to
4,000 rpm. When you
select the
“FULL” setting, a light near
[he switch will come on. It should go
>ut when you change back to the
“NORMAL” setting. When you turn the
ignition
off, the setting will go back to
normal power.
Off-Road Track Use
See your Warranty Book before using
your Corvette for off-road track use.
NOTICE:
If you use your Corvette for off-road
track use, your engine may use more
oil than it would with normal use.
Low oil levels can damage the
engine. Be sure to check the oil level
often during off-road track use.
You
may need to add additional oil. See
“Engine Oil” in the Index.
49 ...

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I NOTICE:
I
Damage to your engine from
neglected oil problems can be costly
and is not covered by your warranty.
... 92
TEMP OIL
OF TEMP OIL
‘F
280
T1 Engine LT5 Enginl
Zngine Oil Temperature Gauge
rhis gauge shows your engine oil
emperature. Oil temperature may
vary
vith the type of driving you do and
weather conditions, but readings above
the shaded area show the normal
operating range. If your oil temperature
is close to the shaded area and it stays
there, your oil temperature is too high.
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;
see your dealer.
1 IZI I
I ,I I
)r numeric gauge measurements,
ness the
“GAUGES” button on the Trip
[onitor until
“OIL” appears. The number
at appears next to the fuel gauge is the
1 temperature. If “LO’ appears, the
mperature
is below 32°F (OOC).

Downloaded from www.Manualslib.com manuals search engine Check Gauges Light
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 gauges to see if they are in
the warning areas.
This light can come on for:
high oil temperature or low oil
pressure
high coolant temperature
high or low battery voltage
low fuel level
LOW
OIL
L
Low Oil Light
This light should come on while you are
starting your engine. If
the light doesn’t
come on, have it repaired.
If the light
comes on while starting your engine and
stays on, your engine oil level may be too
low. You may need to add oil. See
“Engine Oil” in the Index.
LOW
COOLANT
Low Coolant Light
This light comes on when the coolant in
the system is low. You may need to add
coolant. See “Engine Coolant” in the
Index.
NOTICE:
Driving with the “LOW COOLANT”
light on could cause your Corvette to
overheat. See “Engine Overheating”
in the Index. Your Corvette could be
damaged, and it wouldn’t be covered
by your warranty.
93 ...

Downloaded from www.Manualslib.com manuals search engine Heating
The heater works best if you keep your
windows closed while using it.
1. Press yri .
2. Press #A .
3. Slide the temperature control lever to
If your vehicle has an engine coolant
heater and you use it in cold weather,
0°F (-18°C) or lower, your heating
system can provide heat more quickly
because the engine coolant is already
warmed. See “Engine Coolant Heater”
in the Index. a comfortable setting.
Bi-Level
You may want
to use bi-level on cool, but
sunny days. This setting directs outside
air through the instrument panel vents and
the heater ducts.
1. Press $2 .
2. Press #A .
3. Slide the temperature control lever to
a comfortable setting.
Ventilation
For mild outside temperatures, when little
heating or cooling is needed, you can still
direct outside air through your vehicle.
I. Press .
2. Press SA.
3. Slide the temperature control lever to
a comfortable setting.
Defogging and Defrosting
Windows
Your vehicle has several settings for
Aearing your windows. The air
Zonditioner compressor will
run to help
remove moisture from the air.
To defrost the windshield quickly:
I. Press p .
2. Press SA.
3. Slide the temperature control lever all
the way to the right.
To warm passengers while keeping the
windshield clear:
1. Press wd and at the same time.
2. Press SA.
3. Slide the temperature control lever to
To defrost the side windows quickly:
I. Press .
2. Press SA.
3. Slide the temperature control lever all
a
comfortable setting.
the way to the right.
Cooling
The air conditioner works best if you keep
your windows closed. On very hot days,
,pen the windows just long enou,gh for
:he hot air to escape.
I. Press A*J .
2. Press SA.
3. Slide the temperature control lever to
a comfortable setting.
107. I

Downloaded from www.Manualslib.com manuals search engine This delay helps prevent a false reading.
If vehicle speed remains above
25 mph
(40 kmh) or the temperature goes down,
the display is updated immediately.
If your vehicle has been
off for more than
three hours, the current outside
temperature will be stored
in the system
when you start the vehicle.
Inside Temperature: This sensor is in the
center air outlet on the passenger side.
If you block or cover either interior
sensor, the system will give a false
reading.
Automatic Control
The system will adjust to maintain the
temperature you set. It will select the best
fan speed and air flow setting to keep you
comfortable with the least amount of
noise.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press “AUTO.”
The fan speed will adjust automatically unless you press
the arrows on the switch.
Manual Heating
The heater works best if you keep your
windows closed while using it.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press uj .
3. Press the arrows on the fan speed
switch if you don’t like the automatic
setting. In “AUTO
# ” on cold days,
the fan will stay off until the coolant
warms up enough to heat your vehicle.
If your vehicle has an engine coolant
heater and you use it in cold weather,
0 OF (-1 8 O C) or lower, your heating
system can provide heat more quickly
because the engine coolant
is already
warmed. See “Engine Coolant Heater”
in the Index.
Manual Bi-Level
Bi-level can heat or cool outside air and
direct it in two directions.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press 3 .
3. Press the arrows on the fan speed
switch if
you don’t like the automatic
setting.
Manual Ventilation
For mild outside temperatures, when little
heating or cooling is needed, you can still
direct outside
air through your vehicle.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature. For ventilation, the system can’t cool the vehicle below
the outside temperature.
2. Press dJ .
3. Press the arrows on the fan speed
switch if you don’t like the automatic
setting.
Manual Cooling
The air conditioner works best if you keep
your windows closed. On very hat days,
open the windows just long enough for
the hot air to escape.
1. Press the arrows on the “TEMP SET”
switch to set a comfortable
temperature.
2. Press a. After cool-down, adjust
the air flow to another setting. The
compressor works in all settings
109 ...

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
F
Cooling System
When you decide it’s safe to lift the hood,
here’s what you’ll see on the
LT5 engine:
1. Coolant recovery tank
2. Coolant high fill reservoir with
3. Electric engine fans
pressure cap
. . -152
If
the coolant inside the coolant recovery
tank is boiling, don’t do anything else
until it cools down.
When it is cool, remove the coolant
recovery tank cap and look 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 pump or somewhere else
in the cooling system.
I NOTICE:
I
Engine damage from running your
engine without coolant isn’t covered
by your warranty.
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.

Downloaded from www.Manualslib.com manuals search engine 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 the
“COLD, mark, add a
50150 mixture of
clean water (preferably distilled) and a
proper antifreeze at the coolant recovery
tank. (See “Engine Coolant” in the Index
for more information about the proper
coolant
mix.)
NOTICE:
I
In cold weather, water can freeze and
crack
the engine, radiator, heater core
and other parts. Use the recom-
mended coolant.
When the coolant in the coolant recovery
tank is at or above the
“COLD” mark,
start your vehicle.
If the overheat warning continues, there’s
one more thing you can try. You can add
the proper coolant mix directly to the
coolant high fill reservoir, but be sure the
cooling system is cool before you do it.
153 ...

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
4.
5.
6.
7.
8.
Fill with the proper mix. Add coolant
until you see a steady stream of
coolant coming from the bleed valves.
Close the bleed valves.
Continue to fill the coolant high fill
reservoir up to the base of the filler
neck.
Rinse or wipe the spilled coolant from
the engine and compartment.
Start the engine and allow it to run in
idle for approximately four minutes.
By this time, the coolant level inside
the coolant high fill reservoir will be
lower. Add more of
the proper mix
through the filler neck until the level
reaches the base
of the filler neck.
9. Shut the engine off and replace the
pressure cap. Be sure the arrows on
the pressure cap line up like this. 10. Then fill the coolant recovery tank
For a complete drain, flush and refill,
see your Chevrolet dealer or a Chevrolet
Corvette Service Manual.
To purchase a
service manual, see “Service
Publications’’ in the Index. to
the proper level.
. . .156

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
4. Then fill the coolant recovery tank to
the “HOT” mark
on the dipstick.
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 run until
you 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
through the filler neck until the level
reaches the base of the filler neck.
. . .158