engine overheat CADILLAC DEVILLE 1993 7.G User Guide

Downloaded from www.Manualslib.com manuals search engine ENGINE 0VERH.EATING
YOU will find the two warning lights about a hot engine on your Cadillac
instrument panel.
If Steam Is Coming From Your Engine:
A CAUTION:
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 I
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engine is cool.
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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.
0 Idle for long periods in traffic.
0 Tow a trailer.
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If you get the overheat warning with no sign of steam, try this for a
1. Turn off your air conditioner.
- minute or so:
- 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 “N” (Neutral).
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.
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If the warning continues, pull over, stop, and park your vehicle right
away.
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e. 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.
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Downloaded from www.Manualslib.com manuals search engine The coolant level should be at or above near “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.
A CAUTION:
Heater and radiator hoses, and other engine parts, can be very
hot. Don’t touch them. If you do, you can be burned.
Dodbrun the engine if there is a leak. If you run the engine, it
could lose all coolant. That could cause an engine fire, and you
could be burned. Get any leak Pied before you drive the vehicle.
ng your engine witrwut coularr~ isn’t
If there seems to be no leak, check to see if the electric engine fans are
running.
If the engine is overheating, both fans should be running. If they
aren’t, your vehicle needs service.
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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 or above
near
“FULL COLD.” 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.)
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A CAUTION: i
Jding only plain water to your cooling system can be
dangerous. Plain water, or some other liquid like alcohol, 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 50/50 mix of clean
water and
a proper antifreeze.
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A CAUTION:
You can be burned if you spill coolant on hot engine parts.
Coolant contains ethylene glycol and it will burn if the engine
parts are hot enough. Don’t spill coolant on a hot engine.
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When the coolant in the coolant recovery tank is at or above near “FULL
COLD,” 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.
241

Downloaded from www.Manualslib.com manuals search engine A CAUTION:
If you let your tires spin at high speed, they can explode and you
or others could be injured. And, the transaxle or other parts
of
the vehicle can overheat. That could cause an engine fire or
other damage. When you’re stuck, spin the wheels as little as
possible. Don’t spin the wheels above
35 mph (55 km/h) as
shown on the beedometer.
transaxle back and forth, you can destroy your transarl-
Rocking your vehicle to get it out:
First, turn your steering wheel left and right. That
will clear the area
around your front wheels. Then shift back and forth between
“R’
(Reverse) and a forward gear, spinning the wheels as little as possible.
Release the accelerator pedal while
you shift, and press lightly on the
accelerator pedal when the transaxle is
in gear. If that doesn’t get you out
after
a few tries, you may need to be towed out. If you do need to be
towed out, see “Towing Your Vehicle”
in the Index.
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Downloaded from www.Manualslib.com manuals search engine ENGINE COOLANT
The following explains your cooling system and how to add coolant when
it is
low. If you have a problem with engine overheating, see “Engine
Overheating” in the Index.
The proper coolant for your Cadillac will:
0 Give freezing protection down to -34°F (-37°C) .
0 Give boiling protection up to 262°F (128” C) .
0 Protect against rust and corrosion.
Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use:
Use a mixture
of one-half clean water (preferably distilled) and one-half
antifreeze that meets “GM Specification 1825-M,” which won’t damage
aluminum parts.
You can also use a recycled coolant conforming to GM
Specification 1825-M with a complete coolant flush and refill. Use GM
Engine Coolant Supplement (sealer) with any complete coolant change.
If you use these, you don’t need to add anything else.
A CAUTION:
Adding only plain water to your cooling system can be
dangerous. Plain water,
or some other liquid like alcohol, 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 50/50 mix of clean
Waf--- and
a proper anti” e. .-
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Downloaded from www.Manualslib.com manuals search engine Add coolant mix at the recovery tank, but be careful not to spill it.
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A CAUTION:
You can be burned if you spill coolant on hot engine parts.
Coolant contains ethylene glycol, and it
will burn if the engine
parts are hot enougl- spill coolant on
a hot e-yine.
RADUTOR PRESSURE CAP
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must be tightly Installed to prevent coolant loss and possible
engine
damage from overheating. Be sure the arrows on the c
line up with the overflow tube on the radiator filler neck .L
When you replace your radiator pressure cap, an ACS cap is
recommended.
THERMOSTAT
Engine coolant temperature is controlled by a thermostat in the engine
coolant system. The thermostat stops the
flow of coolant through the
radiator until the coolant reaches a preset temperature.
When you replace your thermostat, an
AC@ thermostat is recommended.
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Downloaded from www.Manualslib.com manuals search engine CAUTION:
Poorly maintained and improperly used tires are dangerous.
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Overloading your tires can cause overheating as a result of
too
much friction. You could have an air-out and a serious
accident. See “Loading Your Vehicle” in the Index.
Underinflated tires pose the
same danger as overloaded
tires. The resulting accident could cause serious iqjury.
Check all tires frequently to maintain the recommended
pressure. Tire pressure should be checked when your tires
are cold.
Overinflated tires are more likely to be cut, punctured, or
broken by a sudden impach such as whenyou hit a pothole.
Keep
tires at the recommended pressure.
Worn, old tires
can cause accidents. If your tread is badly
worn, or if your tires have been damaged, replace them.
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Inflation - Tire Pressure
The Tire-Loading Information label which is on the driver’s door shows
the correct inflation pressures for your tires, when they’re
cold. “Cold”
means your vehicle has been sitting for at least three hours or driven no
more than a mile.

Downloaded from www.Manualslib.com manuals search engine Headlights
The headlight wiring is protected by a circuit breaker in the light switch.
An electrical overload
will cause the lights to go on and off, or in some
cases to remain off.
If this happens, have your headlight wiring checked
right away.
Windshield Wipers
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The windshield wiper motor is protected by a circuit breaker and a fuse.
If the motor overheats due to heavy snow, etc., the wiper will stop until
the motor cools. If the overload is caused by some electrical problem and
not snow, etc.,
be sure to get it fixed.
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Power Windows and Other Power Options
Circuit breakers in the fuse panel protect the power windows and other
power accessories. When the current load is too heavy, the circuit breaker
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opens and closes, protecting the circuit until the problem is fixed or goes
away.
BULB CHART
DESCRIPTION BULB NO.
Ash Tray Illumination .................................. 1445
Backup Lights.
........................................ 3057
Center High Mount Stop Light .......................... 1141
CorneringLight ........................................ 881
Courtesy Light
-Doors (White)
....................................... 12864
-Rear Courtesy/Reading
.............................. .562/561
-Doors Warning (Red)
................................. 12864
Courtesy/Maplight
-Without Astroroof
..................................... 906
-With Astroroof
........................................ 56'1
Cruise Control Illumination .............................. 194
Cruise
Control Indicator ................................. 141
ECC Head Illumination .................................. 37
Fuel Data Center Illumination ............................ 194
Glove Compartment Light
............................... 194
Headlights Composite
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