1994 CHEVROLET CORVETTE engine coolant

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 ...

Downloaded from www.Manualslib.com manuals search engine Features and Controls
Driving through Deep Standing Water
NOTICE:
If you drive too quickly through deep
puddles or standing water, water can
come in through your engine’s air
intake and badly damage your
engine. If you can’t avoid deep
puddles or standing water, drive
through them very slowly.
Rough Idling
If you notice rough idling or surging,
especially after long periods of idling or
during slow city driving, the oxygen
sensors may be clogged. If this happens,
follow these steps to clear the oxygen
sensors:
1. Set the parking brake.
2. Shift an automatic transmission to “P”
(Park) or a manual transmission to
“N’ (Neutral).
tachometer reads
2,000 rpm and hold
for two minutes.
3. Press the accelerator until your
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Engine Coolant Heater (Engine
Block Heater)
(LTI ENGINE, CANADA)
In very cold weather, 0 “F (- 18 “C) or
colder, the engine coolant heater can help.
You’ll get easier starting and better fuel
economy during engine warm-up.
Usually, the coolant heater should be
plugged in a minimum of four hours prior
to starting your vehicle.
To use the coolant heater:
1. Turn off the engine.
2. Open the hood and unwrap the
electrical cord.
3. Plug it into a normal, grounded
1 10-volt outlet.
I NOTICE:
After you’ve used the coolant heater,
be sure to store the cord as it was
before to keep it away from moving
engine parts. If you don’t, it could be
damaged.

Downloaded from www.Manualslib.com manuals search engine How long should you keep the coolant
heater plugged in? The answer depends
on the weather, the kind of
oil you have,
and some other things. Instead of trying
to list everything here, we ask that you
contact your Chevrolet dealer in the area
where you’ll be parking your vehicle. The
dealer can give you the best advice for
that particular area.
. i:,
Automatic Transmission
There are several different positions for
your shift lever.
P (Park)
This locks your rear wheels. It’s the best
position to use when you start your
engine because your vehicle can’t move
easily. Ensure the shift
lever is fully in
“P”
(Park) range before starting the engine.
Your Corvette has a brake-transmission
shift interlock. You have to fully apply
your regular brakes before you can shift
from “P” (Park) when the ignition key is
in the “Run” position. If you cannot shift
out of
“P” (Park), ease pressure on the
shift lever
- push the shift lever all the
51 ...

Downloaded from www.Manualslib.com manuals search engine One to Four Light
(MANUAL TRANSMISSION)
When this light comes on, you can only
shift from “1” to
“4” instead of “1” to
“2.” This helps you get the best possible
fuel economy.
This light will come on when:
The engine coolant temperature is
higher than 170°F (77”C),
You are going 15- 19 mph (24-29
kmh), and
You are at 21% throttle or less.
When this light is on, the shift lever will
only let you shift from “1” to
“4.” After
you are in “4,” you can press the clutch
again and shift into another gear. Use the following shift speeds
when the “ONE
TO FOUR’ light is on:
1st to 4th..
....... 15 mph (24 km/h)
4th to 5th ........ 25 mph (40 kmh)
5th to 6th ........ 40 mph (64 km/h)
Each time you come to a stop, your
vehicle’s Engine Control Module (ECM)
determines when to activate
the
One-to-Four upshift system.
Use
“2” only when you accelerate very
quickly from a stop. You can then follow
the full gear shift pattern.
Downshifting
(MANUAL TRANSMISSION)
When you downshift, don’t skip more
than one gear. For example, you can shift
from
“6” to “5” or from “6” to “4.” But
don’t shift from
“6” to “3.”
Be careful not to drive faster than the
speeds shown for each gear:
1st
.............. 40 mph (64 kmh)
2nd
............. 60 mph (97 kmh)
3rd
............ 80 mph (1 29 kmh)
4th ........... 105 mph (169 kmh)
I 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 or transmission.
~~
The six-speed transmission has springs
that center the shift lever near
“3” and
“4.” These springs help you know which
gear you are in when you are shifting. Be
careful
when shifting from “1” to “2” or
downshifting from “6” to
“5.” The spring;
will try to pull the gear shift lever toward
“3” and “4.” Make sure you move the
lever into
“2” or “5.” If you let the lever
move
in the direction of the pulling, you
may end up shifting from
“1” to “4” or
from
“6” to “3.”
55. .

Downloaded from www.Manualslib.com manuals search engine Features and Controls
Warning Lights, Gauges
and Indicators
This section describes the warning lights
and gauges that may be on your vehicle.
The pictures will help you locate them.
Warning lights and gauges can signal that
something is wrong before it becomes
serious enough to cause an expensive
repair or replacement. Paying attention
to your warning lights and gauges could
also save you or others from injury.
Warning lights go on when there may be
or
is a problem with one of your vehicle’s
functions.
As you will see in the details
on the
next few pages, some warning
lights come on briefly when you turn the
ignition key just to let you know they’re
working. If you are familiar with this
section, you should not be alarmed when
this happens.
Gauges can indicate when there may be
or is a problem with one of your vehicle’s
functions. Often gauges and warning
lights work together to
let you know
when there’s a problem with your vehicle.
... 82
When one of the warning lights comes on
and stays on when you are driving, or
when one of the gauges shows there may
be a problem, check the section that tells
you what to do about
it. Please follow the
manual’s advice. Waiting to
do repairs
can be costly
- and even dangerous. So
please get to know your warning lights
and gauges. They’re a big help.
Your vehicle also has a driver information
center that works along with the warning
lights and gauges. See “Driver Information Center’’
in the Index.
System Problems
If “SYS” flashes on the display near your
fuel gauge, there may be a problem with
your Corvette’s electrical system. If the
“SECURITY” light flashes at the same
time, there is a problem with your theft
deterrent system. Have your vehicle
checked by your dealer
if “SYS’ keeps
appearing.
Gauge Markings
The analog gauges provide a quick visual
reference to the actual measurement of
these gauges. However, you must keep in mind that the gauges aren’t linear. This means that the middle mark is not
a
temperature halfway between the top and
bottom temperatures on the gauge. For
example, the middle mark on the coolant
gauge represents 210°F,
not 180°F as you
might expect.

Downloaded from www.Manualslib.com manuals search engine For your convenience, the following table
gives the reading for each mark.
For numeric gauge measurements, refer to
the digital readings by pressing
“GAUGES” on the Trip Monitor.
NUMERIC GAUGE READINGS (OF)
Marking
Gauge
B C D E A
LT1 Oil 100
185 21
0 235 260 100 Coolant 1
90 220 250 280 1 00 LT5 Oil
21 5 250 285 320
Temperature
Temperature
Temperature
Fuel Gauge
Your fuel gauge shows about how much
fuel is in your tank. The bars light up
when the ignition is on or, if the ignition
is
off, when you turn on your parking
lights.
When the display
is down to the last two
bars,
“RESERVE” will appear next to the
gauge.
Here are three concerns some owners
have had about the fuel gauge. All these
situations are normal and do not indicate
that anything is wrong with the fuel
gauge.
At the gas station, the fuel pump shuts
off before the gauge reads
“F.”
83 ...

Downloaded from www.Manualslib.com manuals search engine I
S
T
P
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01
SERVICE
LTPWS
‘ervice LTPWS Light (Option)
‘he “SERVICE LTPWS” light comes on
rhenever a LTPWS part is not working
roperly. It may also come on when
ou’re going less than
25 mph (40 kmk)
r in stop-and-go traffic. The light will go
ut when the electronic receiver gets a
ignal from each sensor.
lheck the system by turning the ignition
n. The light should come on and then go
ut. See your dealer if the light stays on
r doesn’t come on. Here
are two situations that cause the
“SERVICE LTPWS” light to come on
and stay on. Both
of these situations are
normal and do not indicate that anything
is wrong with your Corvette.
You turn the ignition on three times in
a row for half an hour without moving
your Corvette. The light will then
come on every time you
turn the
ignition on until you move your
Corvette.
You run your Corvette three times in a
row for half an hour while all four
sensors are missing. (All the sensors
would be missing, for example, if yo,u
put different wheels on your Corvette
without transferring the sensors.)
If you would like to clear the
”SERVICE LTPWS” light from your
driver information center permanently,
see your dealer.
[f the light comes on and stays on, even
when the vehicle is driven, there may be a
problem with LTPWS. See your dealer.
185
- k- $3 26C
- TEMP .F
100
rEMP “F
LT5 Engine LT1 Engine
Engine Coolant Temperature Gauge
This gauge shows the engine coolant
temperature. If the gauge pointer moves
into the shaded area, your engine is too
hot!
It 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.
HOT COOLANT CAN BURN YOU
BADLY!
In “Problems on the Road,” this manual
shows what to do. See “Engine
Overheating” in the Index.
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