coolant temperature CHEVROLET CORVETTE 1993 4.G Owners Manual

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These s~nrbob are on some.of your
controls:
Windshieid Wipers
Windshield
Washer
Windshield Defroster
Rear Window Defogger
Power Winduw
Here .are :some other symbols,you may
see:
Engine Coolant
Temperature
Battery Charging
System
Fuel
Brake'
Fuse
Hatch Release
I Lighter
Horn
Spmker
Acceleiation Shp
Reguiaiiun
hzr

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Shift Speeds
(MANUAL TRANSMISSION)
This chart-shows when to shift to the
next higher gear for best fuel economy.
If your speed drops below 20 rnph
(32 hh), .or if the engineis.not
running :smo.othly, ~ou shauld
downshift
-to the next lower gear. 'You
may have to downshift two or mare
gears to keep :the engine mrining
smoothly or far :good performance-.
Acceleration Shift Spe.eds:
1st to 2nd .................. 15 mph (24.Jan/h)
2nd to 3rd ................ 25-mph (40-Imh)
3rd to 4th ................. 40 mph (64.ld.h)
4th-to 5th ............. .... 45 rnph (72 ldh)
5th tu 6th .................. :5O'mph (80 lun/h)
.ShRt .Light
(MANUAL TRANSMISSION)
i This light will display ONE TO FOUR..
When this light comes on, you can only
shift from 1 to 4 insteadaf 1 to 2. This
kelps you to get the best possible fuel
.economy.
Thk light will come on under these
conditions-:
The engine coolant. temperature is
geeeater than 120°F (50°C),
9 You are going 12-19.rnph
(20-29 Bm/h), and
You are at 35% throttle or less.
When
this light is .on, the gear s-hift
lever will kt you shift fiam 1 to"4 only.
Q.nce you we in 4 you-. can press th,e
clutch. again and shift into.:another. gear.
-.

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lnsert the Engine Power Key into the
slot and turn claclnvise to FULL. An
indicat0r"light
will come on when FULL
power performance is operating. To
return to-NORMAL power, turn key
countercloclnvise. The indicator
light
should stop glowing. The key returns to
the center position when released. The
key can be removed when the engine is
in PULL or NORMAL power and only
from the center position.
The
FULL power setting provides
additional
power for highway touring
and off-road sports use as well as
reserve power for passing. Both primary
and secondary fuel intake runners and
injectors can operate when the
FULL
setting is chosen. I
When the ignition is shut off, the engine
reverts
to NORMAL power.
Your ZR-1 is capable of operating at
FULL power when the indicator light is
on and u.nder the following conditions:
The engine coolant and oil
temperatures are greater than 68°F
(200Cc) but less than 3OFF (150°C),
and
-The system voltage is greater than 10
volts, and
There is no SERVICE ENGINE
SOON light indicated on the Driver
Infomation Center. Switching
from the NORMAL to
the
FULL setting and from the FULL to
the NORMAL setting may be done at
engine speeds up to 4,000 rpm.
ZR-1 Toll-Free Number:
If you have any questions or concerns
about your
ZR-1 Special Performance
Coupe, call the following toll-free
telephone number
for ,assistance:
1-800-222-1020
(U.S. only).
75

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.Driving. your vehicle with low oil
pressure can cause extensive engine
-damage.
II D4
This gage shows your oil temperature in
degrees Fahrenheit +
It's normal fop the oil temperature to
vary, depending on the type of driving
you do and the weather conditions.. If
"you drive for a long time, such as on a
trip, the gage will show a higher reading-
than
if you had driven for only a short
time. And if it's hot -outside, the-reading
will be higher than if it were cold outside.
If your oil temperature approaches the
shaded area and stays there for some
time; your oil temperature is too high.
Check
the engine oil levei and bring
your vehicle in for service.
You should
also check the engine coolant temperature.
If your engine is to.0 hot, see the.Index
under Engine Cooling System.
For accurate gage measurements refer
to the GAUGES button on the Trip
Monitor (see the
Index under Trip
Monitor).

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This gage shows the engine coolant
temperature,
I If the gage pointer moves-into the shaded
area, yow-engine is too
hot! It meamthat
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, the- manual
shows what to do. See the Ifidex under
Engine Overheating.
For -accurate gage measurements refer
to the
GAUGES button on the Trip
Monitor
(see Trip Monitov later in this
section).
If the LOW COOLANT light, located
-on the Driver Information Center,
comes on, your system is low on
coolant -and your engine may overheat.
Brake System Warning Light
Your Corvette’s hydraulic brake system
is divided.into two parts. If one part
isn’t working, the other part can still
work
and stop you. For good braking,
though,
you need both parts working
well.
If the warning light goes on, there could
be a brake problem. Have-your bralce
system inspected right away.
This light should come on as you start
the vehicle. If it doesn’t come on then,
have it
fixed.so it will be ready to warn
you if there’s a problem.
.-

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Check Gauges Light
This light will come on briefly whien y6u
are starting the engine. I€ the light
comes on and stays on while you are
driving, check your various gages to see
if they are in the warning zones.
If this light comes on and stays on with
the engine running, this indicates one of
the following conditions:
high oil temperature
high coolant temperattiE’
high battery voltage
low battery voltage
IOW oil pressure
or low fuel level (zero bars showing).
I 08
Security Light
The SECURITY light reminds you to
arm your theft deterrent system by
flashing when the ignition is in Lock-
and the doors are opened. It keeps
flashing until
you arm the theft
deterrent system
by locking the doors
using the power door lock button or the
Passive Keyless Entry system.
Once the system
is armed, the light
stops flashing
and remains lit. When the
last
door is shut, the light will stay on
for two seconds and then
go out. It will
also remain lit if the hatch is left open
but the theft deterrent system is still
armed.
If you close the doors and the hatch
without arming the system, the
SECURITY light goes out immediately.
When you re-enter the vehicle, the light
w.ill flash until
you close the door or the
hatch,
or turn the ignition .on. See the
Index under PASS-Key TM and Universal
.Theft Deterrent.

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TRIP OD0 Press. this button to.
change the odometer. Ee,ading to- a trip
odometer--teading. P1es.s again ta-retm
the display to the odometer reading.,
The trip odometer can be u-sehl to
measure the actual distance you travel
on a trip. TQ -set it to zero, see TRIP
RESET below. The..adometer will.
ihrninate
with the fgni"tion off .and the
parkifig lights on.
TRIP RESET: With TRIP OD0
selected for, dis.play, .p ms ..and hold.the
TRJP button for two seconds to change
the trip odometer ,reading to zero.
ENG MET This batton chaqp the
display from customary .Uaited States
measures. (English) tu Canadian
measures (mettic).
OH femperature Display
GAUGES: E+& time this button is
prwsed the:
oil temperature
-4 coolant temperature.
.- or battery voltage
will be- digitally displayed.
The displey will change to:
HI OIL
HI COUL
HI VOLT
or LO VOLT,
.If conditions in the. c.prresponding gages
read higher or lower th.m normal.
If the oil mdxoolant ternpxatur.e$ arc
below 32°F (O,*C), the trip monitor will
display LO when the,actual gage
ternpiratwe is displayed I
Coolant Temperature Dtsplay
Battery Voltage Displ,ay

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Heating and VentMion
In these settings, the air conditioner
compressor doesn't
run. Outside air
enters the vehicle as indicated. For each
setting, adjust the temperature control
lever and
-fan speed as desired.
flows through the instrument panel
outlets.
*A (Hwt): .In this setting, most air
flows through heater ducts near the
floor. Some
air will also flow through
the defroster vents.
If your vehicle has an engine block
heater and you use it during cold
weather,
0°F (-18°C) or lower, your
heating system will more quickly
provide ,heat
because the engine coolant
is already warmed. See the Index under
Engine Block Heater.
4
(Vent): In this setting, outside air
Defogging and Defrosting
YoUr vehicle has two settings for
clearing your windows. The-air
conditioner
compressor will run in both
of these settings to remove moisture
from the air when the temperature is
above freezing. For each setting, adjust
the temperature control
lever and fan
speed as desired.
(@ (Defrost): This setting directs
90% of the air through the windshield
defroster vents
and the side window
vents, and 10% though the floor heater
ducts.
To defrost the windshield, slide the
temperature control lever
to the far right,
press the (@ button, and adjust the
fan to the highest speed.
For rapid
defrosting,
90% of the air will be
directed to the windshield and side
window vents.

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Automutic Electrunic
Climate Cuntvul (C0nt.j
Use These Settings to Set Your Fan
Speed
V (Lqw.Ean): 'This. setting overrides.
the automatic fan speed. To decrease
fan speed, press the
V button and
hold until
you see the fan speed you
want.
AUTO # (Automatic Fan): when
you use this setting, the controller
chooses the fan speed based on the
input signals.
In the AUTO mode
during hot weather (after the vehicle
has not been running for a period of
time) the-fan speed will be
low when
the vehicle is initially
started. This
I42
initial low fan speed is used to purge
the vehicle of hot interior air. In the
AUTO 3f mode during cold weather,
the
fan speed will be delayed. in the
heat
mode until the engine coolant
reaches
an adequate temperature to
provide heat.
A (High .Fan) : This setting overrides
the automatic fan speed. To increase
fan speed, press the A button and
hold until you see the fan speed you
want. There is no €an blower delay.
Fan speeds wil1 range from 1 (lowest
setting)
to 10 (highest setting). When
any fan speed is selected, it will appear
on the digital screen briefly and the
ot~tside temperature will also appear.
Air Conditioning System
If a light above a button flashes when
you turn
on the ignition, it may indicate
an electrical problem with your air
conditioning system. The flashing will
continue for one minute, then go but. It
means you should have your system
checked
and serviced if needed.
It may
also mean the rekigerant level is
too low in your air conditioner system.
The. light will still flash after rebigerant
is added. This means your system will
not cool the air until it is reset.

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Comfort Controls & Audio Systems
Directional Controls (CONT.)
also controls the fan speed
-automaticallyy, unless the fan is
overridden
by the 7 or A button.
'YJJ(Heater): In this setting, all air
coming into the vehicle. is forced to the
floor. The fan blower motor will vary
in speed unless yowpress the Vur A
button. The in-car temperature will
adjust to the setting you choose. The
air conditioning compressor will not.
run in the manual heater mode.
If .your vehicle has an
engine block
heater
and you.use .it during cold
weather,
UoF (-18°C) or lower, your
heating system will .more quickly
provide heat became the engine coolant
is already warmed. See the
Index under
Engine Bluck Heater.
44
(Defrost): With this setting,
mast
of the air is forced. through the
windshield defroster vents. The
cornpressor
runs by using all the input
signals. The fan blower also .goes to a
fixed
high speed with no delay. After
start-up you can override the High fan
blower speed by pushing or AUTO.
DEFOG: Press the and (@'
buttons at the same time to operate the
defog mode. This directs warmed air
through the windshield defroster
vents,
and through the heater ducts.
OFF: Press to turn off the system.
Rear Window Defogger
(COUPE AND HARDTOP CONVERTlBLE)
a (Rear Window Defogger) :Press
this button to warm the defogger grid
on the rear window and
warm the
power mirrors. The indicator light will
glow while the rear window defogger is
operating.
If you have a convertible,
you. will have the 4 (Power Mirror
Defogger) button .on your climate
control system. This button
is for
heated mirrors only. The -rear window
defogger
will turn:off automatically after.
about
10 minutes. of use, You can also-
turn the defogger
off by turning off the
ignition
or by pressing the @ button
again.