1996 PONTIAC PONTIAC engine overheat

Engine Overheating
You will find a coolant temperature gage and a warning
light about a hot engine on your instrument panel. See
“Engine Coolant Temperature Gage” and “Engine
Coolant Temperature Warning Light” in the Index. You
also have
a LOW COOLANT light on your instrument
panel. See
“Low Coolant Light” in the Index.
If Steam Is Coming From Your Engine
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 clown. 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 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.
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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 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. If you’re in a traffic jam, shift to NEUTRAL (N);
speed and open the window as necessary.
otherwise, shift to the highest gear while
driving
-- DRIVE (D) or THIRD (3).
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 sign of stem, 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 oJffthe 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.
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A CAUTION:
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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 fie, and you could be burned.
Get
any ‘leak fixed before you drive the, vehicle.
I NOTICE:
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Engine damage from running your engine
without coolant isn’t covered by your warranty.
I
If there seems to be no leak, with the engine on, check to
see if the electric engine fan@) are running. If the engine
is overheating, both fan(s) should be running. If they
aren’t, your vehicle needs service.
How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but the coolant level
isn’t at the COLD mark, add a 50/50 mixture of ckm
water (preferably distilled) and DEX-COOL”
(orange-colored, silicate-free) antifreeze at the coolant
recovery
tank. (See “Engine Coolant” in the Index for
more information.)
Adding only plain water to your cooling system
can be
dangerous. Plain water, or some other
liquid Eke 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 Q€ clean
water and
DEX-COOL antifreeze.
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NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core and other parts.
Use the recommended coolant and the proper
coolant
mix.
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 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 radiator,. but be sure the cooling system is
cool before
you do it.
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How to Add Coolant to the Radiator
I NOTICE:
~~
Your engine has a specific radiator fill procedure.
Failure to follow this procedure could cause your
engine to overheat and be severely damaged.
1. You can remove the
radiator pressure cap when the cooling system, including the
radiator pressure cap
and upper radiator
hose, is no longer hot.
If you hear a hiss, .wait for that to stop. A hiss means
there is still some pressure left.
Turn the pressure cap slowly counterclockwise until
it first stops. (Don't press down while turning the
pressure cap.)
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Then keep turning
the pressure cap, but
now push down as
you
turn it. Remove the
pressure cap.
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.
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If You’re Stuck: In Sand, Mud,
Ice or Snow
What you don’t want to do when your vehicle is stuck is
to spin your wheels too fast. The method known as
“rocking” can help you get out when you’re stuck, but
you must use caution.
If you let your tires spin at high speed, they can
explode, and you or others could be injured. .And,
the transaxle or other parts of the vehicle can
overheat. That could cause an engine
compartment
fire or other damage. When you’re
stuck, spin the wheels as little as possible. Don’t
spin the wheels above
35 mph (55 M) as shown
on the speedometer.
NOTICE:
Spinning your wheels can destroy parts of your
vehicle
as well as the tires. If you spin the wheels
too
fast while shifting your transaxle back and
forth, you can destroy your transaxle.
For information about using tire chains on your vehicle,
see “Tire Chains” in the Index.
Rocking Your Vehicle to Get it Out
First, turn your steering wheel left and right. That will
clear the area around your front wheels. Then shift back
and forth between REVERSE (R) and a forward gear,
spinning the wheels as little as possible. Release
the
accelerator pedal while you shift, and press lightly on
the ‘accelerator pedal when the transaxle is in gear. If
that doesn’t get you out after a few tries, you may need
to be towed out.
If you do need to be towed out, see
“Towing Your Vehicle” in
the Index.
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How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transaxle fluid to use. See “Recommended
Fluids
and Lubricants” in the Index.
If the fluid level is low, add only enough of the proper
fluid to bring the level into the cross-hatched area on
the dipstick.
1. Pull out the dipstick.
2. Using a long-neck funnel, add enough fluid at the
It doesn’t take much fluid, generally less than a pint
(0.5 L). Don’t oveflll. We recommend you use only
fluid /labeled DEXRON@-HI, because fluid with that
label
is made especially for your automatic transaxle.
Damage caused by fluid other than
DEXRON-111 is
not covered by your new vehicle warranty.
0 After adding fluid, recheck the fluid level as
0 When the correct fluid level is obtained, push the
dipstick hole to bring
it to the
proper level.
described under “How to Check.”
dipstick
back in all the way.
Engine Coolant
The cooling system in your vehicle is filled with new
DEX-COOL (orange-colored, silicate-free) engine
coolant. This coolant is designed
to remain in your
vehicle for 5 years or 100,000 miles (166 000 km), ,
whichever occurs first.
The following explains your cooling system and how to
add coolant when it is low.
If you have a problem with
engine overheating or
if you need to add coolant to your
radiator, see “Engine Overheating” in the Index.
A 50/50 mixture of water and the proper coolant for
your Pontiac will:
0
0
0
0
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Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 265 “F (129°C).
Protect against rust
and corrosion.
Help keep the proper engine temperature.
Let the warning lights lights and gages work as
they should.
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NOTICE:
When adding coolant it is important that you use
DEX-COOL
TM (orange-colored, silicate-free)
coolant meeting
GM Specification 6277M.
If silicated coolant is added to the system,
premature engine, heater core or radiator
corrosion may result. In addition, the engine
coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs
first.
What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half DEX-COOL
TM (orange-colored,
silicate-free) antifreeze that meets GM Specification
6277M, which won’t damage aluminum
parts. Use
GM Engine Coolant Supplement (sealer) (GM Part
No. 3634621) with any complete coolant change. If you
use this mixture, you don’t need. to add anything else.
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 (orange-colored,
silicate-free) antifreeze.
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