engine overheat CADILLAC DEVILLE 1998 7.G Owner's Manual

Downloaded from www.Manualslib.com manuals search engine What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half
DEX-COOL@ coolant which
won’t damage aluminum
parts. If you use this mixture,
you don’t need to add anything else.
I
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 mixture will. Your vehicle’s coolant
warning system
is set for the proper coolant
mixture. With plain water or the wrong mixture,
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 mixture of clean water and
DEX-COOL@ coolant.
NOTICE:
If you use an improper coolant mixture, your
engine could overheat and be badly damaged.
The repair cost wouldn’t be covered by your
warranty.
Too much water in the mixture can
freeze and crack the engine, radiator, heater core
and other parts.
If you have to add coolant more than four times a year,
have your dealer check your cooling system.
NOTICE:
If you use the proper coolant, you don’t have to
add extra inhibitors or additives which claim to
improve the system. These can be harmful.
6-23

Downloaded from www.Manualslib.com manuals search engine Adding Coolant
If you need more coolant, add the proper DEX-COOL@
coolant mixture at the surge tank, but only when the
engine
is cool.
r-
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.
Surge Tank Pressure Cap
I NOTICE:
The surge tank cap is a 15 psi (105 kPa)
pressure-type cap and must be tightly installed to
prevent coolant loss and possible engine damage
from overheating. Be sure the arrows on the cap
line up.
If the surge tank pressure cap needs to be replaced, a
GM cap is recommended.
Thermostat When replacing the pressure cap, make sure it is tight.
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.
If your thermostat needs to be replaced, a GM
thermostat is recommended.
6-25

Downloaded from www.Manualslib.com manuals search engine Tires
Your ~ew vehicle comes with high-quality tires made by
a leading tire manufacturer. If you ever have questions
about your tire warranty and where ,to obtain service, see
your-Cadillac Warranty booklet for details.
I-
A CAUTION:
L
Poorly maintained and improperly used tires
are dangerous.
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.
‘0 Underinflated tires pose the same danger as
overloaded tires. The resultihg accident
could cause serious injury. Check all tires
frequently to maintain the recommended’
pressure. Tire pressure should be checked when
your tires are cold.
CAUTION: (Continued) CAUTION:
(Continued)
0 Overinflated tires are more likely to be
cut, punctured or broken by
a sudden
impact
-- such las when you hit a pothole.
Keep tires at the recommended pressure.
0 Worn, old tires can cause accidents. If your
tread is badly worn, or
if your tires have
been damaged, replace them.
See “Inflation
-- Tire Pressure’’ in this section
for .inflation pressure adjustment for higher
speed driving.
Inflation -- Tire Pressure
The Tire-Loading Information label, which is located on
the rear edge of the driver’s door, shows the correct
inflatiop 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
1 mile (1.6 km).
6-41
I -. ..

Downloaded from www.Manualslib.com manuals search engine Headlamp Wiring
The headlamp wiring has an individual fuse which is
powered by a MaxiFuse?
An electrical overload will
cause the lamps to go on and
off, or in some cases to
remain
off. If this happens, have the headlamp wiring
checked right away.
MaxiFuse
is a registered trademark of Little Fuse ,
Incorporated.
Windshield Wiper Fuses
The windshield wiper motor is powered by a MaxiFuse.
If the motor overheats due to heavy snow, etc., the
wipers will stop until the motor cools.
If the overload,
is caused by some electrical problem, be sure to have
it fmed.
Power Windows and Other Power Options
Circuit breakers protect the power windows and other
power accessories. When the current load
is too heavy,
the cifcuit breaker opens and closes, protecting the circuit until the problem
is fixed or goes away.
MaxiFusesLRelay Center
The MaxiFuses and relays are located next to the engine
compartment fuse b1oc.k on the driver’s side
of the
engine.
To access the compartment fuse block, remove
the shroud cover.
If a MaxiFuse should blow, have your
vehicle serviced by your dealer immediately.
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STARTER

Downloaded from www.Manualslib.com manuals search engine Identification ................................ 6-57
Misfire. Ease
Off Gas Pedal Message ............. 2-85
Overheated. Stop Engine Message
................ 2-85
Overheating
................................. 5-15
PowerReduced
.............................. 2-85
Running While Parked
.................... 2.32. 4.28
Specifications
................................ 6-66
Starting Your
................................ 2-20
Engine Hot
. A/C Off Message .................... 2-85
Engineoil
.................................... 6-11
Adding
..................................... 6-12
Checking
................................... 6-12
Additives
................................... 6- 14
Used
....................................... 6-15
What Kind
of Oil to Use ....................... 6-13
Whentochange
.............................. 6-14
Stop Engine Message
.......................... 2-85
Engine Speed Limiter
............................ 2-67
EnglisMetric Display
.......................... 2-66
Ethanol
........................................ 6-4
Exhaust. Engine
........................... 2.32. 4.28
Express-Down Window
.......................... 2-34
Exterior Lighting
............................... 2- 10
Exterior Lighting Battery Saver .................... 2-46
Fabric Cleaning
............................... 6-50
Fan Button
................................. 3.2. 3.6
Filling Your Tank
................................ 6-5
Finish Care
.................................... 6-53
Finish Damage
................................. 6-55 First Gear. Automatic Transaxle
................... 2-26
Flashers. Hazard Warning
......................... 5-2
Flash-To-Pass Feature
........................... 2-36
Flat Tire. Changing
............................. 5-24
FloorMats
.................................... 2-57
Fluid Capacities
................................ 6-66
Foreign Countries. Fuel
........................... 6-5
FrenchLanguageManual
11
Front Storage Armrest ........................... 2-54
Front Towing
.............................. 5-9. 5-11
Fuel
.......................................... 6-3
Canada
...................................... 6-5
Data Panel
.................................. 2-78
DoorRelease
................................. 6-6
Filling Your Tank
.............................. 6-5
Gage
....................................... 2-77
In Foreign Countries
........................... 6-5
Level Low Message
........................... 2-85
Fuses and Circuit Breakers
....................... 6-60
Gages
FogLamps
.................................... 2-44
.. ...........................
Front Turn Signal Lamp Bulb Replacement .......... 6-34
Engine Coolant Temperature
.................... 2-73
Fuel
....................................... 2-77
Tachometer
.................................. 2-67
GAWR
....................................... 4-30
Gear Positions. Automatic Transaxle ................ 2-23
GloveBox
.................................... 2-54
Gold Key Courtesy Transportation .................. 7-8

Downloaded from www.Manualslib.com manuals search engine Mountain Roads ................................ 4-23
Multifunction Lever
............................. 2-35
Net. Convenience
............................... 2-55
Neutral. Automatic Transaxle
..................... 2-24
New Vehicle Break-In
............................ 2- 18
Nightvision
................................... 4-16
Odometer
.................................... 2-66
Odometer. Trip
................................. 2-66
Off-Road Recovery
............................. 4-12
Oil. Engine
.................................... 6-11
Oil Life Indicator
............................... 2-96
Oil Life Indicator. How to Reset
................... 6-15
Oil Pressure Light
.............................. 2-76
Oil Pressure Low Stop Engine Message
............. 2-86
OnStar System
................................. 2-57
Options
Not Set Message ......................... 2-86
Overdrive. Automatic Transaxle
................... 2-25
Overheated Engine Protection Operating Mode
....... 5- 15
Overheating Engine
............................. 5- 15
Owner Publications. Ordering
................ 7-13. 7-14
Paint Spotting. Chemical
........................ 6-55
ParadeDimming
............................... 2-47
Park
Automatic Transaxle .......................... 2-23
Shifting Into
................................. 2-28
Shifting Out
of ............................... 2-31 Parking
At Night
.................................... 2-14
Brake
...................................... 2-26
Brake Indicator Light
.......................... 2-70
Lots
....................................... 2-14
Over Things That
Burn ........................ 2-31
WithaTrailer
................................ 4-38
Passenger’s Temperature Control
............... 3.3. 3.6
Passing
...................................... 4-13
PASS-Key
i3 II ................................. 2-17
Phone Not Present Message
....................... 2-86
Power Accessory. Retained
........................... 2-19
Antenna Mast Care
............................ 3-41
Door Locks
................................... 2-5
Remote Control Mirror
........................ 2-52
Seat
......................................... 1-2
Steering
.................................... 4-10
Steering Fluid
................................ 6-26
Windows
................................... 2-33
Windows and Other Power Options
............... 6-58
Powerseat
..................................... 1-2
Lumbar Controls
.............................. 1-3
Memory Function
.............................. 1-3
Pregnancy. Use
of Safety Belts .................... 1-20
Problems on the Road
............................ 5-1
Program Pass Key Message ....................... 2-86
Programmable Automatic Door Locks
.......... 2-5. 2-91
Publications. Service and Owner
.............. 7- 13. 7- 14
Pull-Down Feature. Automatic
.................... 2-13
8-8