1996 CADILLAC ELDORADO overheating

Downloaded from www.Manualslib.com manuals search engine FIRST (lji This position gives you even more power Parking Brake
than SECOND (2). You can use it on very steep hills,
or
in deep snow or mud. (If the shift lever is put in
FIRST (l), the transaxle won’t shift into gear until the
vehicle is
going slowly enough.)
NOTICE: - --
If your front wheels can’t rotate, don’t try to
dri.ve. This-might happeh if
you were stuck in
very.deep sand or mud
or were up against a solid
object.
You could damage your transaxle.
Also, if you stop when going uphill, don’t hold Hold
the regular brake
pedal down with your right
foot and push, down the
parking brake pedal with
your left foot to set the
parking brake.
If the
ignition is on, the PARK
BRAKE indicator light
will come ,on.
your vehicle there with only the accelerator
If you try to drive off with the parking brake on, the
pedal.
This could cause overheating and damage PARK BRAKE indicator light stays on. See “Parking
the transaxle. Use
your brakes to hold your
Brake Indicator Light” in the Index for more
vehicle in position on
a hill. information.
When you move out
of PARK (P) or NEUTRAL.(N),*if
the engine is running, the p&king brake should release. If
it doesn’t, you can manually release the parking brake.

Downloaded from www.Manualslib.com manuals search engine Engine Coolant Temperature
Warning Light Malfunction Indicator Lamp
(Service Engine Soon Light)
This red light tells you that
the engine has overheated.
You should stop the car and
turn the engine
off as soon
as possible.
A warning
chime should also sound if
this light comes on. SERVICE
ENGINE
SOON
Your Cadillac is equipped
i with a computer which
monitors operation
of the
l fuel, ignition and emission
1 control systems.
As a check, the light should come on for a few seconds
when you start your engine.
In the section “Problems on
the Road,” this manual explains what to
do. See “Engine
Overheating”
in the Index. This
system is called
OBD I1 (On-Board
Diagnostics-Second Generation) and is intended
to assure that emissions are at acceptable levels for
the life of the vehicle, helping
to produce a cleaner
environment. (In Canada, OBD
I1 is replaced by
Enhanced Diagnostics.) The SERVICE ENGINE
SOON
light comes on to indicate that there is a problem and
service is required. Malfunctions often will be indicated
by the system before any problem is apparent, which
may prevent more serious damage to your vehicle. This
system is also designed to assist your service technician
in correctly diagnosing any malfunction.
2-69

Downloaded from www.Manualslib.com manuals search engine ENGINE COOLANT HOT-IDLE ENGINE - 44:
This message will appear when the engine coolant
temperature is over
248 OF (126°C). To avoid added
strain on a hot engine, turn off the climate control
system. Stop and allow your vehicle to idle until it cools
down or
the message is removed. If it does not cool
down, turn off the engine and have it serviced before
driving it again. Severe engine damage can result from
an overheated engine. See “Engine Overheating” in
the Index.
FUEL LEVEL VERY LOW - 11: This message serves
as a warning that the fuel level in the tank is critically
low. Stop for fuel immediately.
MONITORED SYSTEMS OK - 1: This message only
appears in the “recall” mode by pressing the RESET
button. It lets you know that no other messages are
stored or currently active.
PASS KEY NOT PROGRAMMED - 31: This
warning message displays when the PASS-Key pellet
information has not been programmed into your vehicle.
See your Cadillac dealership for service.
PCM FAULT - 110: The circuit in the Powertrain
Control Module (PCM) has shorted or is loose when this
message appears. Have your Cadillac serviced by your
dealership at once.
REDUCED ENGINE POWER - 41: This message
informs the driver that due to wheel slippage your
vehicle is reducing engine power to compensate for the
loss of traction. Accelerating too fast causing the tires to
spin is an example of when this message would display.
REMOVE KEY - 70: This message will appear when
the Personalized Automotive Security System
(PASS-Key
11) is unable to read the pellet on the
ignition key or an improper key pellet has been inserted.
Wait for the DIC to display STARTING DISABLED
DUE TO THEFT SYSTEM REMOVE IGNITION
KEY. The instrument panel cluster will then run a timer
and change the messages to WAIT
3 MINUTES, WAIT
2 MINUTES, WAIT 1 MINUTE and then START CAR.
When the REMOVE KEY message is displayed, remove
the ignition key. Check the ignition key for damage.
If it
is damaged, it may need to be replaced. If you see no
damage, clean the pellet contacts with a soft cloth or
2-81

Downloaded from www.Manualslib.com manuals search engine SERVICE RIDE CONTROL - 84: This message is
displayed to indicate that the suspension system
is not
operating properly. To correct this problem have your
vehicle serviced at your Cadillac dealership.
SERVICE TRANSMISSION - 100: If a problem is
detected with the transaxle, this message will appear.
Have your vehicle checked by your Cadillac dealership.
SPEED SENSOR FAULT - 109: A circuit problem
with the vehicle speed sensor will trigger this message
to appear. Have your Cadillac dealership service your
vehicle.
STARTING DISABLED DUE TO THEFT SYSTEM
REMOVE IGNITION KEY
- 33: This message will
appear when the Personalized Automotive Security
System (PASS-Key
11) senses that an improper ignition
key is being used to try to start the vehicle. Check the
ignition key for damage.
If it is damaged, it may need to
be replaced.
If you see no damage, clean the pellet
contacts with a soft cloth
or napkin. Remove the ignition
key and wait for the DIC to display WAIT
3 MINUTES.
The instrument panel cluster will then run a timer and
change
the messages to WAIT 2 MINUTES, WAIT
1 MINUTE and then START CAR. When the START
CAR message is displayed, try again to start the engine.
STOP ENGINE ENGINE OVERHEATED - 42: This
message will appear when the engine has overheated.
Stop and turn the engine
off immediately to avoid severe
engine damage. See “Engine Overheating” in the Index.
STOP ENGINE LOW OIL PRESSURE - 35: If this
message appears while the engine is running, stop the
engine and do not operate
it until the cause of low oil
pressure is corrected. Severe damage to the engine
can result.
THEFT SYSTEM PROBLEMKAR MAY NOT
RESTART
- 34: This message means there is a problem
in the Personalized Automotive Security System
(PASS-Key 11). A fault has been detected in the system
which means that the PASS-Key I1 system is disabled
and is not protecting the vehicle. The vehicle usually
restarts however, you may want to take your vehicle to
a
proper service center before turning off the engine.
TOP SPEED FUEL CUT-OFF - 111: This message
will appear when the PCM senses that the maximum
speed for your Cadillac has been reached. The speed of
your vehicle will decrease several mph as the fuel
supply is cutoff. This allows your vehicle to stay in a
stable operating range.
2-83
1

Downloaded from www.Manualslib.com manuals search engine Making Turns
NOTICE:
Making very sharp turns while trailering could
cause the trailer to come in contact with the
vehicle. Your vehicle could
be damaged. Avoid
making very sharp turns while trailering.
I
When you’re turning with a trailer, make wider turns
than normal.
Do this so your trailer won’t strike soft
shoulders, curbs, road signs, trees or other objects.
Avoid jerky
or sudden maneuvers. Signal well in
advance.
Turn Signals When Towing a Trailer
When you tow a trailer, your vehicle may need a
different turn signal flasher and extra wiring. Check
with your Cadillac dealer. The green arrows on your
instrument panel will flash whenever you signal a turn
or lane change. Properly hooked
up, the trailer lamps
will also flash, telling other drivers you’re about to
turn,
change lanes or stop. When
towing
a trailer, the green arrows on your
instrument panel will flash for turns even if the bulbs on
the trailer are burned out. Thus, you
may think drivers
behind you are seeing your signal when they are not. It’s
important to check occasionally to be sure the trailer
bulbs are still working.
Driving On Grades
Reduce speed and shift to a lower gear hefor-e you start
down a long or steep downgrade.
If you don’t shift
down,
you might have to use your brakes so much that
they would get hot and no longer work well.
On a long uphill grade, shift down and reduce your
speed to around
45 mph (70 km/h) or less to reduce the
possibility
of engine and transaxle overheating.
4-36

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find an ENGINE COOLANT HOT-IDLE
ENGINE message or a
STOP ENGINE ENGINE
OVERHEATED message
on the DIC. There is also an
engine temperature warning light on the instrument
panel. See “Engine Temperature Warning Light”
in the
Index.
Overhe 1 Engine Ootection Operating
Mode
Should a low coolant condition exist and the message
STOP ENGINE ENGINE OVERHEATED is displayed,
an overheat protection mode which alternates firing
groups
of four cylinders helps prevent engine damage.
This operating mode allows your vehicle to be driven
to a safe place in
an emergency; you may drive up to
50 miles (80 km). Towing a trailer in the overheat
protection mode should be avoided.
NOTICE:
After driving in the Overheated Engine
Protection Operating
Mode, to avoid engine
damage, allow the engine to cool before
attempting any repair. The engine oil may be
severely degraded. Change the oil and reset the
oil life indicator. See “Engine Oil, When to Change” in the Index.
5-15

Downloaded from www.Manualslib.com manuals search engine NOTICE:
Engine damage if you keep running your engine
without coolant isn’t covered by
your warranty.
See “Overheated Engine Protection Operating
Mode” in the Index.
If there seem to be no leak, with the engine on, 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.
How to Add Coolant to the Coolant Surge
Tank
If you haven’t found a problem yet, but the coolant level
isn’t at the proper level
(2.5 inches (60 mm) below the
base
of the fill neck), add a 50/50 mixture of cleun
water (preferably distilled) and DEX-COOL TM
antifreeze at the coolant surge tank, but be sure the
cooling system, including the coolant surge tank
pressure cap, is cool before
you do it. (See “Engine
Coolant’’ in the Index for more information.)
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 coolant surge
tank pressure cap
-- even a little -- they can come
out at high speed. Never turn the cap when the
cooling system, including the coolant surge tank
pressure cap,
is hot. Wait for the cooling system
and coolant surge tank pressure cap to
cool if you
ever have to turn the pressure cap.

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The cooling system in your vehicle is filled with new
DEX-COOL TM (orange-colored, silicate-free) engine
coolant. This coolant is designed to remain in your
vehicle for
5 years or 100,000 miles (166 000 km),
whichever occurs first.
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.
A 50/50 mixture of water and the proper coolant for
your Cadillac will:
Give freezing protection down to -34°F (-37°C).
Give boiling protection up to 265°F (129°C).
Protect against rust and corrosion.
Help keep the proper engine temperature.
Let the warning lights and gages work as they
should.
NOTICE:
When adding coolant it is important that you use
DEX-COOL (orange-colored, silicate-free)
coolant meeting
GM Specification 6277M.
If silicated coolant is added to the system,
premature engine, heater core or radiator
corrosion may result. In addition, the engine
coolant will require change sooner
-- at
30,000 miles (50 000 km) or 24 months,
whichever occurs first.
What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL (orange-colored,
silicate-free) antifreeze that meets GM Specification
6277M, which won’t damage aluminum parts. Use
GM Engine Coolant Supplement (sealer) (GM Part
No. 3634621) with any complete coolant change. If you
use this mixture, you don’t need to add anything else.
A special procedure is required for adding sealer; see the
Cadillac service manual.
(To order a service manual, see
“Service and Owner Publications” in the Index.)
6-19