coolant temperature CADILLAC DEVILLE 1998 7.G User Guide

Downloaded from www.Manualslib.com manuals search engine Engine Overheating
You will find an ENGINE COOLANT HOT, IDLE
ENGINE message or an ENGINE
OVERHEATED
STOP, ENGINE message on the Driver Information
Center (DIC). You will
also hear a chime. There is also
an engine temperature warning light andor gage on the
instrument panel. See “Engine Coolant Temperature
Warning Light” or “Engine Coolant Temperature Gage”
in the Index.
Overheated Engine Protection
Operating Mode
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 will be severely degraded. Repair
the cause of coolant loss, change the oil and reset
the oil life indicator. See “Engine Oil, When to
Change” in the Index.
Should an overheated engine condition exist and the
message ENGINE OVERHEATED STOP ENGINE is
displayed, an overheat protection mode which alternates
firing groups
of four cylinders helps prevent engine
damage.
In this mode, you will notice a loss in power
and engine performance. This operating mode allows
your vehicle to be driven to a safe place in
an
emergency; you may drive up to 50 miles (80 lun).
Towing a trailer in the overheat protection mode should
be avoided.
5-15

Downloaded from www.Manualslib.com manuals search engine I NOTICE:
If your engine catches fire because you keep driving with no coolant, your vehicle can be
badly damaged. The costly repairs would not be
covered by your warranty. See “Overheated
Engine Protection Operating Mode” in the Index.
____~
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.
If you get the overheat warning with no sign of steam,
try this for a minute or
so:
1. Turn off your air conditioner.
2. Dial temperature control to the highest heat setting
and open the windows, as necessary.
3. If you’re in a traffic jam, shift to NEUTRAL (N);
otherwise, shift to the highest gear while
driving
-- OVERDRIVE (GO) or THIRD (3).
If you no longer have the overheat warning, you
can drive. Just to be safe, drive slower for about
10 minutes. If the warning doesn’t come back on, you
can drive normally.
If the warning continues, pull over, stop, and park your
vehicle right away.
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. Also, see “Overheated
Engine Protection Operating Mode” listed previously in
this section.
You may decide not to lift the hood but
to get service
help right away.
5-17

Downloaded from www.Manualslib.com manuals search engine Engine Coolant
The cooling s stem in your vehicle is filled with
DEX-COOL engine coolant.
This coolant is designed
to remain
in your vehicle for 5 years or 150,000 miles
(240 000 km) whichever occurs first, if you add only
DEX-COOL’ extended
life coolant.
B
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 DEX-COOL’
coolant will:
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 265 “F ( 129 O C).
0 Protect against rust and corrosion.
0 Help keep the proper engine temperature.
0 Let the warning lights and gages work as
they should.
NOTICE:
When adding coolant, it is important that you
use only DEX-COOL@ (silicate-free) coolant.
If coolant other than DEX-COOL 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. Damage caused by the
use
of coolant other than DEX-COOL’ is not
covered by your new vehicle warranty.
6-22

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 Power Steering Fluid
The power steering fluid
reservoir is located next to
the coolant surge.tank on
the passenger’s side of
the engine.
When to Check Power Steering Fluid
It is not necessary to regularly check power steering
fluid unless you suspect there is a leak in the system or
you hear an unusual noise. A fluid loss in this system
could indicate a problem. Have the system inspected
and repaired.
How To Check Power Steering Fluid
When the engine compartment is cool, wipe the cap
and the top
of the reservoir clean, then unscrew the cap
and wipe the dipstick with a clean rag. Replace the cap
and completely tighten it. Then remove the cap again
and look at the fluid level on the dipstick.
The level should be at the
FULL COLD mark. If
necessary, add only enough fluid to bring the level up
to the mark.
What to Use
To determine what kind of fluid to use, see
“Recommended Fluids and Lubricants” in the
Maintenance Schedule booklet. Always use the
proper fluid. Failure to use the proper fluid can cause
leaks and damage hoses and seals.
Windshield Washer Fluid
What to Use
When you need windshield washer fluid, be sure to read
the manufacturer’s instructions before use.
If you will be
operating your vehicle in an area where the temperature
may fall below freezing, use a fluid that has sufficient
protection against freezing.
6-26
I

Downloaded from www.Manualslib.com manuals search engine Damage. Finish ............................... 6-55
Damage. Sheet Metal
............................ 6-54
Daytime Running Lamps
......................... 2-43
Dead Battery
................................... 5-3
Defects. Reporting Safety
................... 7-12. 7-13
Defensive Driving
............................... 4-2
Defogger. Rear Window
......................... 3- 12
Defogging
.................................... 3- 12
Defrosting
.................................... 3- 12
DIC
.......................................... 2-79
Digital Cluster Climate Control Panel
................ 3-2
Digital Control Buttons
.......................... 2-79
Dolby B Noise Reduction
................... 3- 17. 3-21
Central Unlocking System
....................... 2-5
MapPocket
................................. 2-54
OpenMessage
............................... 2-84
Driver Door Open Message
....................... 2-84
Driver Information Center
......................... 2-79
Driver Information Center Messages
................ 2-82
Driver Position
................................. 1 - 11
Driver’s Outside Auto-Dimming Rearview Mirror
..... 2-52
Driving Dimensions. Vehicle
............................. 6-66
Door Locks
....................................... 2-4
City
........................................ 4-20
Defensive
.................................... 4-2
Drunken
..................................... 4- 3
Freeway
.................................... 4-21
InaBlizzard
................................. 4-27 In Foreign Countries
........................... 6-5
IntheRain
.................................. 4-17
Night
...................................... 4-15
On Curves
.................................. 4-10
On Grades While Towing a Trailer
............... 4-37
On Hill and Mountain Roads
.................... 4-23
OnSnowandIce
............................. 4-26
Throughwater
............................... 4-19
WetRoads
.................................. 4-17
Winter
...................................... 4-25
With a Trailer
................................ 4-36
DRL
.......................................... 2-43
Drunken Driving
................................ 4-3
Dual Temperature Control
..................... 3-3, 3-6
ECC ......................................... 3-2
Electrical Equipment, Adding
........... 2-21,3-39, 6-57
Electrical System ............................... 6-57
Electrochromic Daymight Rearview Mirror
..... 2-48, 2-49
Electronic Climate Control
........................ 3-2
Electronic Level Control
......................... 4-31
Electronic Solar Sensor
............................ 3-9
Engine
....................................... 6-10
Compartment Fuse Block
....................... 6-61
Coolant
................................ 6-22, 6-24
Coolant Heater
............................... 2-21
Coolant Hot-Idle Engine Message
................ 2-84
Coolant Temperature Gage
..................... 2-73
Coolant Temperature Warning Light
.............. 2-72
Exhaust
................................ 2-32, 4-28

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 Lamps ........................................ 2-42
Courtesy
.................................... 2-46
Interior
..................................... 2-46
Maps
....................................... 2-47
OnReminder
................................ 2-43
Panel
....................................... 2-46
Underhood
.................................. 6-11
Leaving Your Vehicle
............................. 2-7
Leaving Your Vehicle with the Engine Running
....... 2-30
Light Sensor. Twilight Sentinel
.................... 2-45
Lighter
....................................... 2-55
Lights
Air Bag Readiness ....................... 1.23. 2.68
Anti-Lock Brake System Warning
............ 2.71. 4.7
Brake System Warning
......................... 2-69
Charging System Indicator
...................... 2-69
Engine Coolant Temperature Warning
............. 2-72
Interior
..................................... 2-46
Oil Pressure ................................. 2-76
Parking Brake Indicator
........................ 2-70
Safety Belt Reminder
...................... 1.7. 2.68
Service Engine Soon
.......................... 2-73
Traction Control System Warning
............ 2.72. 4.9
Loading
Your Vehicle ........................... 4-29
Anti-Lockout Feature
.......................... 2-6
Automatic Door
............................... 2-5
Door
........................................ 2-4
PowerDoor
.................................. 2-5
Locks
......................................... 2-4 Programmable Automatic Door
.............. 2.5. 2.91
Rear Door Security
............................. 2-6
Tmnk Release ................................ 2-11
Lock/Unlock Confirmation
....................... 2-92
Low-Refrigerant NC Off Message
................. 2-86
Lumbar Controls
................................ 1-3
Magnasteer
N ............................... -4- 10
Maintenance. Normal Replacement Parts
............ 6-67
Maintenance. Underbody
......................... 6-55
Maintenance When Trailer Towing
................. 4-38
Malfunction Indicator
Lamp ...................... 2-73
MapLamps
................................... 2-47
MapPocket
................................... 2-54
Matching Transmitters To Your Vehicle
.............. 2-8
MaxiFusesRelay Center
......................... 6-58
Memory and Personalization Features
............... 2-90
Memory Seat and Mirrors
......................... 1-3
Methanol ...................................... 6-4
Mirrors Convex Outside
.............................. 2-53
Driver’s Outside Auto-Dimming Rearview
......... 2-52
Electrochromic Daymight Rearview
......... 2.48. 2.49
Memory Seat and Mirrors
....................... 1-3
Power Remote Control
......................... 2-52
Visor Vanity
................................. 2-56
MMT
......................................... 6-4
ModelReference
11
Monitored Systems OK Message ................... 2-86
.. ..................................

Downloaded from www.Manualslib.com manuals search engine Shoulder Belt Height Adjuster ..................... 1- 13
Shoulder Belt Tightness Adjustment
................ 1 . 14
Signaling Turns
................................ 2-35
SIR .......................................... 1-21
Skidding
...................................... 4-14
Sound Equipment. Adding
........................ 3-39
Spare Tire. Compact
........................ 5-25. 5-34
Speaker Covers. Cleaning
........................ 6-51
Specifications and Capacities
...................... 6-66
Speech Impaired. Customer Assistance
............... 7-4
Speedometer
................................... 2-66
Stability Engaged Message
....................... 2-88
Stains. Cleaning
........................... 6-50. 6-51
Starting Disabled. Remove Ignition Key Message
..... 2-88
Starting Your Engine
............................ 2-20
Steam
........................................ 5-16
Steering
...................................... 4-10
In Emergencies ............................... 4-1 1
Magnasteer
................................ 4- 10
Power ...................................... 4-10
Tips
........................................ 4-10
Wheel. Tilt
.................................. 2-34
Steering Column Shift Lever
...................... 2-28
Steering Wheel Touch Controls
............... 3-13. 3-37
Storage Compartments
........................... 2-54
Storage Mode Personalization
..................... 2-48
Storage. Vehicle
................................ 6-31
Stuck: In
Sand. Mud. Ice or Snow .................. 5-35
Sunvisors
.................................... 2-56
Sunroof
....................................... 2-58 Supplemental Inflatable Restraint
.................. 1-21
Surge Tank. Coolant ............................. 5-20
Surge Tank Pressure Cap
......................... 6-25
Symbols. Vehicle
................................ x111 ...
Tachometer ................................... 2-67
Taillamp Bulb Replacement
....................... 6-36
Tape Player Care
............................... 3-39
Telephone. Cellular
............................. 2-56
Temperature Controls
......................... 3.2. 3.6
Theft
......................................... 2-14
Security Override
............................. 2-16
Theft System Problem. Car May Not Restart Message
. . 2-88
Thermostat .................................... 6-25
Third Gear. Automatic Transaxle
................... 2-25
Tilt Steering Wheel
............................. 2-34
Time. Setting the
............................... 3-14
Tire-Loading Information Label
................... 4-29
Tires
......................................... 6-41
Alignment and Balance
........................ 6-46
Buying New
................................. 6-44
Chains
..................................... 6-48
ChangingaFlat
.............................. 5-24
Cleaning
.................................... 6-54
Compact Spare
.......................... 5.25. 5.34
Inflation
.................................... 6-41
Inspection and Rotation
........................ 6-43
Theft-Deterrent Alarm System
.................... 2-15
Tire Loading
................................... 4-29
8.1 1