1996 CHEVROLET CAVALIER Owners Manual

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find a coolant temperature gage and a
low coolant warning light on your Chevrolet’s
instrument panel. 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.
I NOTICE:
If your engine catches fire because you keep
driving with no coolant, your vehicle can be
badly damaged. The costly repairs would not be
covered by your warranty.
5-13

Downloaded from www.Manualslib.com manuals search engine 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.
Idle for long periods in traffic.
Tow a trailer.
If you get the overhear warn J wlm no sign of steam,
try this for a. minute or
so:
1. If you have an air conditioner, turn it off.
2. Turn on your heater to full hot at the highest fan
speed and open the window as necessary.
3. If you’re in a traffic jam, shift to NEUTRAL (N);
otherwise, shift to the highest gear while
driving
-- AUTOMATIC OVERDRIVE (D)
or THIRD (3) for automatic transaxles.
If you no longer have the overheat warning, you can drive.
Just to be safe, drive slower for about
10 minutes. If the
warning doesn’t come back on, you can drive normally.
If the warning continues, pull over, stop,
and park your
vehicle right away.
If there’s still no slgn of steam, you can idle the engine
for two or three minutes while you’re parked, to see if
the warning stops. But then, if you still have the
warning,
turn ofthe engine and get everyone out of the
vehicle until it cools down.
You may decide not to lift the hood but to get service
help right away.
When you decide it’s safe to lift the hood, here’s what
you’ll see:
2.2L
Engine
5-14

Downloaded from www.Manualslib.com manuals search engine If the coolant inside the coolant surge tank is boiling,
don't do anything else until it cools down.
2.4L Engine
A. Coolant Surge Tank with Pressure Cap
B. Electric Engine Fan
A C * "TION:
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.

Downloaded from www.Manualslib.com manuals search engine The coolant level should be at the FULL COLD line. 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.
’ A C * UTION:
-- I
Heater and radiator hoses, and other engine
parts, can be very hot. Don’t touch them. If you
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.
Get any leak fixed before you drive the vehicle.
I NOTICE:
r
~~ ~
Engine damage from running your engine
without coolant isn’t covered by your warranty.
If there seems to be no leak, with the engine on, check to
see if the electric engine fan is running.
If the engine is
overheating, the fan should be running. If it isn’t, your
vehicle needs service.

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Coolant Surge
Tank
If you haven’t found a problem yet, but the coolant level
isn’t at the
FULL COLD mark, add a 50/50 mixture of
clean water (preferably distilled) and DEX-COOL TM
antifreeze at the coolant surge tank, but be sure the
cooling system, including the coolant surge tank
pressure cap,
is cool before you do it. (See “Engine
Coolant”
in the Index for more information.)
I A CAUTION:
-
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
surge tank pressure cap
-- even a little -- they
can come out at high speed. Never turn the cap
’ CAUTION: (Continued) when
the cooling system, including the coolant
surge
tank pressure cap, is hot. Wait for the cooling
system and coolant surge tank pressure cap to cool
if you ever have to turn the pressure cap.
5-17

Downloaded from www.Manualslib.com manuals search engine 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 50/50 mix of clean
water and
DEX-COOL TM antifreeze.
I NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts.
So
use the recommended coolant. You
can be burned if you spill coolant
01 lot
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.
1. You can remove the coolant surge tank pressure cap
when the cooling system, including the
coolant surge
5-18

Downloaded from www.Manualslib.com manuals search engine tank pressure cap and upper radiator hose, is no
longer hot. Turn the pressure cap slowly about
one-quarter turn to the left and then stop.
that to stop.
A hiss means
left. If you hear a hiss, wait for
there
is still some pressure
2. Then keep turning the
pressure cap slowly, and
remove it.
3. Then fill the coolant surge tank with the proper mix,
up to the
FULL COLD mark.
5-19

Downloaded from www.Manualslib.com manuals search engine I
4.
I
With the coolant surge tank pressure cap off, start
the engine and let it run until you can feel the upper
radiator hose getting hot. Watch out for the engine fan.
By this time, the coolant level inside the coolant surge
tank may be lower. If the level is lower, add more of the
proper mix
to the coolant surge tank until the level
reaches the
FULL COLD mark.
5. Then replace the
pressure cap. Be sure the
pressure cap is tight.
5-20