Honda 2001 NSX, Owner'S Manual

Page: 258 / 305

If Your Engine Overheats
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
Emergency
Towing
on page 269 ).
7. If you don't find an obvious leak,
check the coolant level in the
expansion tank (see page
135 ).
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 counterclockwise.
Stop and wait for any pressure in
the expansion tank to escape.
Then press down on the cap and
turn it counterclockwise to remove
it.
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. Remember 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
Emergency Towing
on page 269 .)
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
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.