Acura 1995 NSX Online Reference Owner's Manual page 210

Main Menu
4. If the temperature gauge stays at
the red mark, turn off the engine.
5. Wait until you see no more signs
of steam or spray, then open the
front hood and engine cover.
6. Look for any obvious coolant
leaks, such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you find a leak, it
must be repaired before you
continue driving (see Towing on
page 223).
Removing the expansion tank
cap while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and radiator
cool down before removing the
expansion tank cap.
Table of Contents
7. If you don't find an obvious leak,
check the coolant level in the
expansion tank (see page 148).
8. If the expansion tank needs
coolant, you will have to remove
the cap. Before doing that, turn
the ignition switch ON (II) and
check the temperature gauge.
Remove the expansion tank cap
ONLY if the temperature gauge
pointer has come down to normal
or below and you do not hear any
bubbling or gurgling noises
coming from the cooling system.
9. Use a cloth or glove to protect
your hand while removing the
expansion tank cap. Without
pressing it downward, turn the cap
one-quarter turn counterclock-
wise. Stop and wait for any pres-
sure in the expansion tank to
escape. Then press down on the
cap and turn it counterclockwise to
remove it.
If Your Engine Overheats
10. Start the engine and set the
climate control to FULL AUTO at
90°F (32°C). Add coolant up to
the MAX line on the expansion
tank. If you do not have the
proper coolant mixture available,
you can add plain water. Remem-
ber to have the cooling system
drained and refilled with the
proper mixture as soon as you
can.
11. Put the expansion tank cap back
on tightly. Run the engine and
watch the temperature gauge. If
it goes back to the red mark, the
engine needs repair, (see Towing
on page 223).
12. If the temperature stays normal,
check the coolant level in the
expansion tank. If it has gone
down, add coolant to the MAX
mark. Put the expansion tank cap
back on tightly.
Taking Care of the Unexpected