radiator cap CHEVROLET CORVETTE 1993 4.G Owners Manual

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Cooling System
When you decide it% safe to lift the
hood, heri’s.what you’ll see-:
(A) Coolant.recovery tank
(B) Coolant-high fillreservoir with
(C) Electric engine fans
pressure c~p
If the caulant inside the csolaht
recovery tank is boiling, don’t do;
anything else until it cuols dam.
When it is cwl, rtmove- the .coolant
reqvery tank cap and I-ook at - the
dipstick. The
Coolant level should be at
or above-COLD.
If it isn”t, you may have a leak in the
radiator hoses, heater hoses, radiator,
water pmp, vapor vent pipes or hoses
or coolant pump.

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
How to Add Coo/ant to the Coolant
Recovery Tank (CONT.)
CAUTlON
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 high fill reservoir
pressure cap-even a little-they
can come out at high speed. Never
turn the cap when the cooling
system, including the coolant
high
fill reservoir pressure cap, is hot.
Wait for the cooling system and
coolant high fill reservoir pressure
cap to cool if you ever have to turn
the pressure cap.
How fa Add Coolant to the Coolant
High FM Reservoir-LT1 On/y 1. You can remove the coolant high fill
reservoir pressure cap when the
cooling system, including the coolant
high fill reservoir pressure cap and
upper radiator hose,
is no longer hot.
Turn the 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.
.n
- ,.

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How to Add Coolant to the Coolant
High Fi/l Reservoir-LT5 On/y
1. YQU can remove, the coolant high fill
reservoir pressure cap when the
cooling system, including.the coolant
high fill reservoir pressure cap and
upper radiator hose, is no longer hot.
Turn the pressure cap slowly to the
left until it first stlaps. (Don't press
down while turning the pressure
cap .)
If you hear a hiss, wait for that to stop.
A hiss- means ther,e is still some pressure
left.
122
2. Then keep turning. the pressure cap,
-but
now push down as you turn it.
Remove the pressure. cap.
3. Fill the coolant high fill reservoir with
the proper mix, .up to the base of the
filler neck.

Downloaded from www.Manualslib.com manuals search engine 4. Then fill the coorant recovery tam to
the HOT mark an the.dip$tick..
-5.. Put the cap back on the- coolant.
recovery tank, but leave the coolant
high fill reservoir pressure cap off.
6. Start the engine and let it m until
y~u can feel the upper radiator hose-
getting hot. Watch out for the engine-
fans.
7. By this time the coolant level inside
the coolant high fill reservoir filler
neck may be -lower. if the level is
lower, add more of the proper mix
thxough the filler neck until the level
reaches..the base of the Tiller neck.

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Adding Caalant-LT5 Enghe
(CONT,)
2. Add the coolant mix to the coolant
high fill reservoir until the level
reaches the
base of the res&voir filler
neck
3. With the pressure cap still removed,
run the engine until the upper
radiator
hose is hot. With the engine
at idle, add coolant
mix again, if
needed, to bring the level back up to
the reservoir filler neck base.
4. Put on the pressure cap. When it’s
tight, the arrows on the cap should
line up with the overflow tube on the
reservoir filler neck.
Coolant High Fill Reservoir
Pressure Cap
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When you replace your coolant high fill
reservoir pressure cap, an AC@ cap is
recommended. Engine
coolant temperature
is
controlled by a thermostat in the engine
coolant
system. The thermostat sfops
the flow of coolant through the radiator
until the .coolant reaches a preset
temperature.
When you replace your thermostat, -an
AC* thermostat is recommended.