coolant BUICK RIVIERA 1993 Owners Manual

Vehicle Symbols
These are some of the symbols you will find on your vehicle.
For example,
these symbols
are used on an
original battery:
POSSIBLE A
CAUTION
INJURY
PROTECT EYES BY
SHIELDING
CAUSTIC
BURNS AVOID
SPARKS
OR
FLAMES
SPARK
OR ,111,
COULD pq
FLAME
EXPLODE BATTERY
These symbols
are important
for you and
your passengers whenever your
vehicle
is
driven:
FASTEN SEAT 4
BELTS
These symbols
have to do with
your lights:
SIGNALS TURN
HIGH BEAM
OR = =o
FOG LAMPS $0
These symbols
are on some
of
your controls:
WINDSHIELD ’ ’ ’ 4- #-
WASHER
f0 -**
WINDSHIELD Q
WASHER I
WINDSHIELD
DEFROSTER
WINDOW
DEFOGGER
VENTILATING
FAN
L.
HEADLAMP - ,~*-,
WASHER iQ
WIPER -
L
These symbols
are used on
warning and
indicator lights:
COOLANT F-
TEMP --
ENGINE
CHARGING
I-1
BATTERY SYSTEM
RADIATOR
a
COOLANT
FUEL
ENGINE OIL
PRESSURE
Wb
TEMP OIL &
ANTILOCK (@)
BRAKE
Here are some
other symbols
you may see:
FUSE
RADIO
‘‘ill
SELECTOR
RADIO
k
VOLUME
CONDITIONING
AIR 33
HATCHBACK /y
TRUNK
RELEASE
t LIGHTER 1-
HORN
SPEAKER
cr
~ 12 , .

Engine Coolant Temperature Warning
Light and Gage Malfunction Indicator Lamp (Service
Engine Soon Light)
the engine off 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. A computer monitors operation
of your fuel, ignition
and emission control systems. This light should come on when the ignition
is on, but the engine is not running, as
a check to show you it
is working. If it does not come on
at all, have it fixed right away. If it stays
on, or it comes
on while you are driving, the computer is indicating that
you have a problem. You should take your vehicle in for
service soon.
113

Auto
I- - To choose the temperature When the system is set
far
you- want maintained inside automatic, air
will come
the vehicle, press the
TEMP from the floor outlets, the
A or for warmer or instrument panel outlets or
cooler. both. Fan speed will vary
(unless a blower
LO or HI
:.if, button has been pushed) as
the system gets to and
maintains the temperature setting you have selected.
-
,..I . .
a
~
You can choose from 60 OF (1 6 " C), for maximum
1 cooling, and 90' F (33 "C), for maximum heating. It is The display will show the selected temperature and
blower speed.
! not necessary to choose the extreme temperature to get In cold weather the system will delay turning on the
the system to heat
or cool at the maximum. The system
blower, to avoid blowing cold air. The length of the
does it automatically. delay depends
on engine coolant temperature, outside
temperature and time since the engine was last started.
Pushing a
LO or HI blower button will override this
delay, and will turn on the blower.
120

Engine Overheating
You willi find a coolant temperature gage and the
warning light about a hot engine on your Buick
instrument panel.
If Steam Is Coming From Your Engine:
I
A CAUTION:
Steam from an overheated engine can burn you
badly, even if you just open the hood. Stay away
from the engine if you see or hear steam
coming from
it. Just turn it off and get everyone
away from the vehicle until
it cools down. Wait
until there is no sign of steam or coolant before
opening the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch fire. You
or others could be badly burned. Stop your
engine if
it overheats, and get out of the vehicle
until the engine is cool.
If No Steam Is Coming From Your Engine:
If you get the overheat warning but see or hear no
steam, the problem may not be too serious. Sometimes
the engine can get a little too hot when you:
Climb a long hill on a hot day.
Stop after high speed driving.
Id.le for long periods in traffic.
If you get the overheat warning with no sign of steam,
try this for a minute or
so:
1. Turn off your air conditioner.
2. Turn on your heater to full hot at the highest fan
3. Try to keep your engine under load (in a drive gear
speed and open the window as necessary.
where the engine runs slower).

When you decide it’s safe to lift the hood, here’s what
you’ll
see:
Coolant recovery tank
Radiator pressure cap
Electric engine fan
An electric 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
If the coolant inside the coolant recovery tank is boiling,
don’t do anything else until it coals down. The coolant level should be at or above
“FULL 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.
198

I
A CAUTION:
' ~ Heater and radiator hoses, and other engine
--# parts, can be very hot. Don't touch them. If you I 1
.': do, you can be 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.
I_ '1 Get any leak fixed before you drive the vehicle. /I
,
A CAUTION:
Adding only plain water to your cooling system
can be dangerous. Plain water, or some other
liquid like alcohol, can boil before the proper
coolant mix
will. Your vehicle's coolant warning
system
is set for the proper coolant mix. With
plain water or the wrong mix, your engine could
get too hot but you wouldn't get the overheat
warning. Your engine could catch fire and you
or others could be burned. Use a
5060 mix of
clean water and a proper antifreeze.

I
I
CAUTION:
You can be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
and it will burn
if the engine parts are hot
enough. Don’t spill coolant on a hot engine.
When the coolant in the coolant recovery tank is at or
above
“FULL COLD,” 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 radiator, but be sure the cooling system is
cool before
you do it.

How to Ad,d Coolant to the Radiator
You can remove the
radiator pressure
cap when the
cooling system,
including the
radiator pressure cap
and upper
radiator hose, is no
longer hot.
Turn the pressure 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.
1 2. Then keep turning
the pressure cap,
but now push down as you turn it.
Remove the pressure cap.
3. Fill the radiator
with the proper
mix, up to the base
of the filler neck.
202

1
4. Then fill the coolant recovery tank to “FULL
COLD.’3
6. Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out forthe
-
5. Put the cap back on the coolant recovery tank, but engine fan.
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.
leave the
radiator pressure cap
off. 7. By this time the coolant level inside the radiator
203

A CAUTION:
An electric fan under the hood can start up and
injure you even when the engine is not running.
Keep hands, clothing and tools away from a---
underhood electric fan.
-
A CAUTION:
Things that burn can get on hot engine parts
and start a fire. These include liquids like
gasoline,
oil, coolant, brake fluid, windshield
washer and other fluids, and plastic or rubber.
You or others could be burned. Be careful not to
drop or spill things that will burn onto a hot
engine.
Before closing the hood, be sure all the filler caps are on
properly.
Then just pull the hood down and close
it firmly.