1993 CADILLAC DEVILLE coolant temperature

Downloaded from www.Manualslib.com manuals search engine These symbols are used on warning and indicator lights:
r3 BRAKE
ENGINE COOLANT
TEMPERATURE BAlTERY
CHARGING SYSTEM
93
U
ANTILOCK BRAKE I FUEL I ENGINE OIL
PRESSURE ENGINE OIL
TEMPERATURE
Here are some other symbols you may see:
U
RADIO VOLUME m RADIO SELECTOR E CONDITIONING
t
U
LIGHTER I SPEAKER TRUNK HATCHBACK
RELEASE
5

Downloaded from www.Manualslib.com manuals search engine - Engine Coolant Temperature Warning Light
r
This light tells you that
your engine coolant has overheated or your
radiator cooling fans
are not working. If you
have been operating
your vehicle under
normal driving
conditions, you should
pull
off the road, stop
your vehicle and turn
-1 the engine off as soon
as possible.
HOT COOLANT CAN BURN YOU BADLY!
In “Problems on the Road,” this manual shows what to do. See “Engine
Overheating” in the Index.
Engine Temperature Warning Light
I This light tells you that
your engine has overheated.
If you have been operating your vehicle under normal driving conditions,
you should pull
off the road, stop the car and turn the engine off as soon
as possible.
A warning chime should also sound if you drive with this light
on. The chime will continue to sound until the ignition is turned
“off” or
the light goes out.
As a check, the light should come on for a few seconds
when you start your engine.
125

Downloaded from www.Manualslib.com manuals search engine on the display. To get a fan speed that is a little lower than the “Auto Fan”
speed, push the
“Lo” or “Hi” button until you see the “Auto Fan Lo Fan”
on the display.
When first starting your vehicle with a cold engine, the fan speed will
gradually increase as the temperature
of the engine coolant increases.
Defiost
To get fog or ice off the
windshield, push the
Defrost button.
It will help a lot if you first clear any ice and snow from the hood and the
air inlet (it’s between the hood and the windshield). The fan speed
operation is delayed if the engine is not at its normal operating
temperature.
Heated Windshield (Option)
Front De-Ice
Here’s how to use your heated windshield in cold weather to remove ice
or frost quickly:
1. If any snow is piled up on the windshield, brush it away.
2. Start your Cadillac and leave it in P (“Park”).

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. .-
e

Downloaded from www.Manualslib.com manuals search engine Add coolant mix at the recovery tank, but be careful not to spill it.
-
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
I-
_I
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.
c
Lr