1993 CHEVROLET S10 Owners Manual

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find a coolant temperature gage on your vehicle inslrument panel.
If Steam IS Coming From Your Engine:
. ,, ..;., .. ,., - , . I ~ &<4g&&$': $&$&&%,+ I , $.$ .?,'$;;$ ;,";,&,.,.&
..
KO71 4
1 ,A Steam from an overheated engine can burn you badly, even if you
just open the hood. Stay away from the engine
if you see or hear
steam coming from it. Just turn it
off and get everyone away from
the vehicle until it cools down. Wait until there is no sign of steam or
coolant before opening the hood.
If you keep driving when your engine is overheated, the liquids in it
can catch fire. You or others could be badly burned. Stop your
engine
if it overheats, and get out of the vehicle until the engine is
I cool.
NCITICE
5-9

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
If No Steam Is Coming From Your Engine:
If you get the overheat warning but see or hear no steam, the problem may
not be too serious. Sometimes the engine can get a little
too hot when you:
Climb a long hill on a hot day.
Stop after high speed driving.
Idle for long periods in traffic.
Tow a trailer.
If you get the overheat warning with no sign of steam, try this for a minute
or so:
1. If you have an air conditioner, turn it off.
2. Turn your heater to full hot at the highest fan speed and open the
3. If you're in a traffic jam, shift to N (Neutral).
window as necessary.
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 com\
e 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, push the accelerator until the engine speed is
about twice as fast as normal idle speed. Bring the engine sp\
eed back to
normal idle speed after
two or three minutes. Now 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.
KO71 5
5-1 0
I

Downloaded from www.Manualslib.com manuals search engine When you decide it's safe to lift the hood, here's what you'll see:
A. Coolant recovery tank
B. Radiator pressure cap
C. 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 the
ADD mark. If it isn't, you may
have a leak in the radiator hoses, heater hoses, radiator or water pump or
somewhere else in the cooling system.
CAUTION I
Heater and radiator hoses, and other engine parts, can be very\
hot.
Don't touch them.
If you do, you can be burned.
loose all coolant. That could cause an engine fire, and you could be
burned. Get any leak fixed before you drive the vehicle. run the engine
if there is a leak. If you run the engine, it could
NOTICF
If there seems
to be no leak, start the engine again to see if the fan runs
when the engine does.
If it doesn't, your vehicle needs service. Turn off the
engine.
5-1 1

Downloaded from www.Manualslib.com manuals search engine How to Add Coolant to the Coolant Recovery Tank
If you haven’t found a problem yet, but the coolant level isn’t at or above the
ADD mark, add a 50/50 mixture of clean water (preferably distilled) and the
proper antifreeze at the coolant recovery tank. (See “Engine\
Coolant” in the Index for more information about the proper coolant mix.)
I CAUTION
4
Adding only plain water to your cooling system can be dangerous.
Rain water,
or some other liquid, like alcohill, can boil before the
proper coolant mix
will. Your vehicle’s coolant warning system is set
for the proper coolant mix. With plain water, or the wrong mix, 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 5Q/M mix of clean wafer and a proper antifreeze.
NOTICE
In cold weather, water can freeze and crack the en1
core and other
parts. Use the recommended coolan
*
I CAUTION
I I
You can be burned if you spill coolant on hot engine parts. Coolant
b contains ethylene glycol and it wil’l burn if the engine parts are hot
I’ enough. Don’t spill coolant on a hot engine.
When the coolant in the coolant recovery tank is at or above \
the
ADD mark,
start your vehicle.
If the overheat warning continues, there’s one more thing you c\
an try. You
can add the proper coolant mix directly to the radiator, but \
be sure the
cooling system
is cool before you do it.
A
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 pressure 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.
5-1 2

Downloaded from www.Manualslib.com manuals search engine KO71 7
How to Add Coolant to the Radiator
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 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.
I
KO7
2. Then keep turning the pressure cap, but now push down as you \
turn it.
Remove the pressure cap.
5-1 3

Downloaded from www.Manualslib.com manuals search engine Pmb/ems on the Road
c
KO719
3. Fill the radiator with the proper mix, up to the base of the filler neck.
4. Then fill the coolant recovery tank to the ADD mark.
5. Put the cap back on the coolant recovery tank, but leave the radi\
ator
pressure cap
off.
KO720
6. Start the engine and let it run until you can feel the upper radiator hose
7. By this time, the coolant level inside the radiator filler neck m\
ay be
getting hot. Watch out for the engine fan.
lower.
If the level is lower, add more of the proper mix through the filler
neck until the level reaches the base
of the filler neck.
5-1 4

Downloaded from www.Manualslib.com manuals search engine KO721
8. Then replace the pressure cap. Be sure the arrows on the pres\
sure cap line up like this.
Engine Fan Noise
This vehicle has a clutched engine cooling fan. When the clutch is engaged,
the fan spins faster to provide more air to cool the engine. In most every day
driving conditions the clutch is not engaged. This improves fue\
l economy and
reduces fan noise. Under heavy vehicle loading, trailer towing andlor high
outside temperatures, the fan speed increases when the clutch e\
ngages.
So
you may hear an increase in fan noise. This is normal and should not be
mistaken as the transmission slipping or making extra shifts.
It is merely the
cooling system functioning properly. The fan will slow down whe\
n additional
cooling is not required and the clutch disengages.
You may also hear this fan noise when you start the engine. It will go away
as the fan clutch disengages.
If a Tire Goes Flat
It’s unusual for a tire to “blowout” while you’re d\
riving, especially if you
maintain your tires properly.
If air goes out of a tire, it’s much more likely to
leak out slowly. But if you should ever have a “blowout,”\
here are a few tips
about what to expect and what to do:
If a front tire fails, the flat tire will create a drag that pu\
lls the vehicle toward
that side. Take your foot off the accelerator pedal and grip the steering wheel
firmly. Steer to maintain lane position, then gently brake to \
a stop well out of
the traffic lane.
5-1 5

Downloaded from www.Manualslib.com manuals search engine Problems on the Road
A rear blowout, particularly on a curve, acts much like a skid and may,
require the same correction you'd use in a skid. In any rear blowout, remove
your foot from the accelerator pedal. Get the vehicle under co\
ntrol by steering
the way you want the vehicle
to go. It may be very bumpy and noisy, but
you can still steer. Gently brake
to a stop, well off the road if possible.
If your tire goes flat, the next part shows how to use your jac\
king equipment
to change a flat tire safely.
Changing a Flat Tire
If a tire goes flat, avoid further tire and wheel damage by driving slowly to a
level place. Turn on your hazard warning flashers.
I CAUTION I
A Changing a tire can cause an injury. The vehicle can slip off the jack
A and roll over you or other people. You and they coulld be badly
injured. Fin'd a level place to change your tire. To help prevent the
vehicle from moving:
I. Set the parking brake firmly.
2. Put the shift lever in P (Park).
3. Shift a manual transmission to 1 (First) or R (Reverse).
4. If you have a four-wheel-drive vehicle with a manu'al transfer
case
shift lever, be sure the transfer case is in a drive
gear-not
in ' N (Neutral).
5- Turn off the engine.
To be even more certain the. vehick won't move, you can put blocks
at
the front and rear of the tire farthest away from the one being
changed. That would be the tire
on the other side of the vehicle, at
the opposite end.
5-1 6