1998 PONTIAC FIREBIRD cooling

When it is cool, remove the coolant recovery tank cap
and look at the dipstick.
The coolant level should be at
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.
A CAUTION:
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:
I
Engine damage from running your engine
without coolant isn't covered
by your warranty.
5-18

If there seems to be no leak, with the engine on, check to
see if the electric engine cooling fans
are running. If the
engine is overheating, both fans 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
FULL COLD add a 50150 mixture of clean water
(preferably distilled) and DEX-COOL@ engine coolant
at the coolant recovery tank. (See “Engine Coolant” in
the Index for more information.)
a CAUTION:
-1
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 mixture will. Your vehicle’s coolant
warning system is set for the proper coolant
mixture. With plain water or the wrong mixture,
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 mixture of clean water and
DEX-COOL@ coolant.
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 mixture.
5-19

When the coolant in the coolant recovery tank is at
FULL COLD start your vehicle.
If the overheat
warning continues, there's one more
thing you can try. You can add the proper coolant
mixture directly to
the radiator but be sure the cooling
system
is cool before you do it.
'
A 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.
F
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 radiator
pressure cap
-- even a little -- they can come out
at high speed. Never turn the cap when the
cooling system, including the radiator pressure
cap, is hot. Wait for the cooling system and
radiator pressure cap
to cool if you ever have to
turn the pressure cap.
5-20

1
How to Add Coolant to the Radiator
(3800 V6 Engine)
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.
Turn the
pressure cap slowly counterclockwise 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.
5-21

5. Then fill the coolant recovery tank to FULL COLD.
6. Put the cap back on the coolant recovery tank, but
leave the radiator pressure cap off.
I
7.
8.
Start the engine and let it run until you can feel the
upper radiator hose getting hot. Watch out for
the
engine cooling fans.
By
this time, the coolant level inside the filler neck may
he lower. If the level is lower, add more of the proper
DEX-COOL@ coolant mixture through the filler neck
until the level reaches the base of the filler neck.
r
9. Then replace the pressure cap. At any time during
this procedure
if coolant begins to flow out of the
filler neck, reinstall the pressure cap. Be sure the
arrows on the pressure cap line up like this.

How to Add Coolant to the Radiator
(VS Engine Only)
NOTICE:
The LS1 Engine (Code G) 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. Turn the
pressure cap slowly
to the left (counterclockwise)
until it fist 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.
5-24

When you open the hood of the 3800 V6 engine you’ll see:
F a
A. Engine Coolant Reservoir
B. Battery
C. Radiator Cap
D. Oil Fill Cap
E. Automatic Transmission
Dipstick (If Equipped)
E Windshield Washer Reservoir
G. Engine Cooling Fan
H. Air Filter
I. Power Steering Reservoir
J. Engine Oil Dipstick
IS. Brake Fluid Reservoir
L. Clutch fluid Reservoir
(If Equipped)
6-10

When you open the hood of the 5.7L V8 engine you’ll see:
A. Engine Coolant Reservoir
B. Battery
C. Engine Oil Dipstick
D. Engine Oil Fill Cap
E. Windshield Washer Reservoir F.
Engine Cooling Fan
G. Automatic Transmission
Dipstick
(If Equipped)
H. Air Filter
I. Power Steering Reservoir
J. Brake Fluid Reservoir
K. Clutch Fluid Reservoir
(If Equipped)