1995 CHEVROLET BLAZER engine coolant

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find a coolant temperature gage on your vehicle’s instr\
ument
panel.
If Steam Is Coming From Your Engine
NOTICE:
If your engine catches fire because you keep driving with no
coolant, your vehicle can be badly damaged. The costly repairs
would not be covered by your warranty.
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Downloaded from www.Manualslib.com manuals search engine 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:
0 Climb a long hill on a hot day.
0 Stop after high speed driving.
0 Idle for long periods in traffic.
e Tow a trailer. See "Driving on Grades" in the Index.
If
YOU get the overheat warning with no sign of steam, try this for a minute
or
so:
1. Turn off your air conditioner.
2. Turn on your heater to full hot at the highest fan speed and open the
window as necessary.
3. If you're in a traffic jam, shift to NEUTRAL (N); otherwise, shift to the
highest gear while driving
- AUTOMATIC OVERDRIVE (@) or
DRIVE (D) for automatic transmissions.
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, push the accelerator until the engine speed is
about twice as fast
as normal idle speed. Bring the engine speed 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 oflthe 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.
ici
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When you decide it's
safe to lift the hood,
here's what you'll
see:
A. Coolant recovery
B. Radiator pressure C. Engine fan tank
cap

Downloaded from www.Manualslib.com manuals search engine 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 the
ADD mark. 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.
NOTICE:
Engine damage from running your engine without coolant isn’t \
covered
by your warranty.
If there seems to be no leak, start the engine again. See if the fan speed
increases when idle speed is doubled
by pushing the accelerator pedal down.
If it doesn’t, your vehicle needs service. Turn off the engine.
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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 ADD, add a
50/50 mixture of clean water (preferably distilled) and a proper antifreeze at
the coolant recovery tank. (See “Engine Coolant’’ in the Index for more
information about the proper coolant
mix.) ..
NOTICE:
In cold weather, water can freeze and crack the engine, radiat\
or,
heater core and other parts. Use the recommended coolant.
1
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Downloaded from www.Manualslib.com manuals search engine When the coolant in the coolant recovery tank is at ADD, start your vehicle.
If the overheat warning continues, there’s one more thing you can try. You
can add the proper coolant mix directly to the radiator but be sure the
cooling system
is cool before you do it.
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Downloaded from www.Manualslib.com manuals search engine 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.
.. "
as you turn it.
Remove the
pressure cap.
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Downloaded from www.Manualslib.com manuals search engine 3. Fill the radiator
with the proper
mix, up to the
base
of the filler
1
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
radiator pressure cap off.
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Downloaded from www.Manualslib.com manuals search engine 1
6. Start the engine
and let it
run until
you can feel'the
upper radiator hose getting hot.
Watch out for the
engine fan.
7. By this time the coolant level inside the filler neck may be lower. If the
level is lower, add more of the proper mix through the filler neck unt\
il
the level reaches the base of the filler neck.
8. Then replace the
pressure cap. At
any time during
this procedure if
coolant begins to
flow out of the
filler neck,
reinstall the
pressure cap. Be
sure the arrows
on the pressure
cap line
up like
this.
Engine Fan Noise
This vehicle has a clutched engine cooling fan. When the clutc\
h 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 fuel economy
and reduces fan noise. Under heavy vehicle loading, trailer tow\
ing and/or
high outside temperatures, the fan speed increases when
the clutch engages.
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 when
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.
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