1994 CADILLAC DEVILLE coolant temperature

Downloaded from www.Manualslib.com manuals search engine These symbols are used on warning and indicator lights:
m BRAKE
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ENGINE COOLANT
TEMPERATURE RADIATOR
COOLANT
CHARGING
1
ENGINE OIL PRESSURE I FUEL 1 - ENGINE OIL TEMPERATURE
ANTILOCK BRAKE
Here are
some other symbols you may see:
F
L FUSE I AIR
CONDITIONING I RADIO SELECTOR RADIO VOLUME
r 1 1
E I
P
=I
1 LIGHTER I
SPEAKER TRUNK HATCHBACK
RELEASE
5

Downloaded from www.Manualslib.com manuals search engine If the light stays on, turn the ignition off. Or, if the light comes on when
you’re driving, stop as
soon as possible and turn the ignition off. Then
start the engine again to reset the system. If the light still stays on, or
comes
on again while you’re driving, your Cadillac needs service. If the
regular brake system warning light isn’t on,
you still have brakes, but you
don’t have anti-lock brakes. If the regular brake system warning light is
also on, you don’t have anti-lock brakes and there’s a problem with your
regular brakes. See “Brake System Warning Light” earlier
in this part.
The anti-lock brake system warning light may also come on when you are
driving with a compact spare tire. If this happens, the light means you
won’t have anti-lock until you replace the compact spare with a full-size
tire.
If the warning light stays on after you replace the compact spare with
a full-size tire, or if it comes on again when you’re driving, your Cadillac
needs service.
Engine Temperature Warning Light (Canadian Only)
This light tells you that
your engine has
overheated. You should
stop the car and idle the
engine as soon as
possible. A warning
chime should also sound
if this light comes on. As
a check, the light should
come on for a few
seconds when
you start
your engine.
HOT COOLANT CAN BURN YOU BADLY!
In “Problems on the Road,” this manual shows what to do. See “Engine
Overheating” in the Index.
134

Downloaded from www.Manualslib.com manuals search engine CHECK OIL LEVEL - 36
This message will appear when your engine oil is approximately a quart
low. If this message is displayed, check the
oil and add as needed.
CHECK WASHER FLUID - 25
This message will appear for a few seconds indicating that you need
washer solvent.
CHANGE OIL SOON - 40
This message will appear when your engine oil is less than 10 percent or
the mileage since the last
oil change is more than 6750 miles.
CHANGE ENGINE OIL - 82
This means that the life of your engine oil has expired and it should be
changed immediately. See engine
oil and filter recommendations in the
Maintenance Schedule. After an
oil change, the Oil Life Index must be
reset. See “Oil Life Indicator” in the index
on how to reset it.
CRUISE ENGAGED - 43
This message will appear for a few seconds when you select a speed to
cruise at.
ENGINE COOLANT HOT - 44
This message will appear when your engine coolant temperature is over
126°C (259OF). To avoid added strain on a hot engine, turn off your
Climate Control system, and stop and allow your vehicle to idle until it
cools down or the message
is removed. If it does not cool down, turn off
your engine and have it serviced before driving it again. Severe engine
damage can result from an overheated engine. See “Engine Overheating”
in the Index.
ENGINE HOT - A/C COMPRESSOR OFF - 16
This message will appear when the Climate Control is in “Auto” or
“Defrost” and the engine coolant is hotter than the normal operating
temperature.
To avoid added strain on a hot engine the air conditioning
compressor is automatically turned
off. When that happens, air
conditioned air is not delivered.
If the coolant temperature returns to
normal, the
A/C operation returns to normal.
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Downloaded from www.Manualslib.com manuals search engine AUTO
With this setting, the air conditioning compressor cycles when needed to
cool the air and it’s all automatic. In cold weather when the system senses
- the need for heat, the air flow will be directed out the floor ducts. As the
interior temperature approaches the desired setting, the blower speed
will decrease and the air flow could be directed through the defroster and
floor ducts.
To maintain interior comfort, the air flow may move to the air
outlets and floor ducts (Bi-level). On bright sunny days
in cold weather,
the air
flow could even come out the A/C outlets to maintain comfort and
prevent stuffiness.
Electronic Climate Control Features
-
~.
~
A/C Purge
- .. If your vehicle is sitting out on a hot day and you have it set on AUTO,
the air will first flow out the floor air ducts for a few seconds. That is
normal. This is to expel hot air in the air ducts.
As the air is cooled, the
__ flow will move through the A/C outlets. If you start your vehicle with the
fan setting on “HI” it will skip the
A/C Purge.
Cold Weather Purge
-- On cold days when your system is first turned on, in either the AUTO or
ECON setting and the fan setting is not on “HI”, a small amount of air
will flow through the defroster duct while the system is waiting for the
breath from fogging your windshield.
As the coolant warms up? the
blower speed will gradually increase and air will
flow from the heater
normal conditions.
-. . engine coolant to warm up enough to provide heat. This prevents your
-~ outlets, with some bleed to the windshield to prevent fogging under most
Manually Recirculate Inside Air
I.
There may be times, when you don’t want air from the outside. To
recirculate the air from the inside only, in either “AUTO” or “ECON”
setting, just set the temperature to 60 F (16 C) and adjust your fan - speed, if the air quantity is too high.
DEFOG
c_ Push this button to divide the air between the windshield and the heater
ducts. This is Lseful when fog appears on the windshield or side glass due
to a sudden rainy or snowy condition.
153

Downloaded from www.Manualslib.com manuals search engine Fan Speeds
Push the (symbol)
button until “AUTO” is
displayed on the
screen.
At this setting, the fan speed
is controlled automatically.
If it is cold outside, the blower may not run in the maximum high fan
speed right away. The system checks the temperature
of the coolant to
assure it is warm enough to provide heat. When the coolant
is warm, the
controllers will allow the fan to ramp up to a higher speed. This prevents
cold air from blowing into the passenger compartment.
If you want the blower fan to run only at a fixed high speed, push the
(upper) button until you see “HI” on the display.
If you want the fan speed to be automatic, but you like the fan speed to
be higher than the.AUT0 setting, just push the buttons until “HI/AUTO”
is shown on the display.
If you want the blower to run only at a fixed
low speed, push the (low)
button until “LO” is shown on the display.
If you want the fan speed to run lower than the “AUTO” setting, push the
button until “AUTO
LO” is shown on the display.
DEFROSTER
--
Push this button to
remove fog or frost
from the windshield.
This setting sends most
of the air flow to the windshield with only a small
amount to the floor outlets.
The fan speed
will work automatically to maintain your requested interior
temperature.
If you need more air to your windshield, you should select a
higher fan speed.
In some cold start conditions, the AUTO fan speed may be limited until
the system warms up. This is normal
to prevent windshield fogging.
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).

Downloaded from www.Manualslib.com manuals search engine 3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Engine Cooling When Trailering
Your cooling system may temporarily overheat during severe operating
conditions such as;
Climbing grades steeper than 4% at ambient temperatures above
90” Fahrenheit (32’Celsius) with a loaded vehicle and trailer.
Stopping after high-speed driving.
Idling for long periods in stop and go traffic.
If “ENGINE
HOT A/C COMPRESSOR OFF” message appears on the
Driver Information Center, do not be alarmed. This is a normal function
designed to reduce the load on the engine and cooling system you can
continue to drive your vehicle.
If “ENGINE COOLANT
HOT” message appears on the Driver
Information Center, pull off to the side of
the road as soon as it is safe to
do so. When the vehicle is at a complete stop, shift the transmission
selector to
P (Park) and allow the engine to idle. Do not turn off the
engine or increase engine speed above a normal idle. Within
two or three
minutes the system should cool sufficiently to allow
A/C operation to
resume. At that
time resume driving at a reduced speed. Return to
normal driving after
10 minutes if the “ENGINE COOLANT HOT”
message
is not displayed.
Maintenance when Trailer Towing
Your vehicle will need service more often when you’re pulling a trailer.
See
the Maintenance Schedule for more on this. Things that are
especially important
in trailer operation are automatic transaxle fluid
(don’t overfill), engine oil, belts, cooling system, and brake wear. Each of
these is covered
in this manual, and the Index will help you find them
quickly. If you’re trailering, it’s a good idea to review these sections
before
you start your trip.
Check periodically
to see that all hitch nuts and bolts are tight.
213

Downloaded from www.Manualslib.com manuals search engine When the correct fluid level is obtained, push the dipstick back in all -
the way.
ENGINE COOLANT 7
The following explains your cooling system and how to add coolant when (. I
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 (-37OC) .
0 Give boiling protection up to 262 F (128 C) .
0 Prote-ct against rust and corrosion.
Help keep the proper engine temperature.
Let the warning-lights work as they shoula.
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 this mixture, you don’t need to add anything else.
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Downloaded from www.Manualslib.com manuals search engine 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.
POKER STEERIING FLUID
273