Pontiac 1993 Sunbird Owner's Manual page 131

Problems on the Road
3 . Try to keep your engine under load
(in a drive gear where the engine
runs slower).
If you no longer have the overheat
warning, you can drive. Just to be safe,
drive slower for about ten 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 steam, 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 OFF THE
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.
If you have a 2.0L L4 engine, your
engine coolant system will have a
coolant recovery tank. If you have a
3.1L
V6 engine, your engine coolant
system will have a coolant surge tank.
There are important differences
between these two cooling systems.
Read this section carefully.
1 3 0
4 C O O h g
!ij8tmz
(2.0L L4 ENGINE)
When you decide it's safe to lift the
hood, here's what you'll see:
(A)
Coolant recovery tank.
(B) Thermostat housing pressure cap.
(C)
Electric engine fan.
If the coolant inside the coolant
recovery tank is boiling, don't do
anything else until it cools down.
The coolant level should be at or above
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.