1997 BUICK CENTURY engine overheat

What to Use
Use a mixture of one-half dean 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.
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
50150 mix of clean
water and
DEX-COOL@ coolant.
NOTICE:
If you use an improper coolant mix, your engine
could overheat and be badly damaged. The
repair cost wouldn’t
be covered by your
warranty.
Too much water in the mix 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.
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Checking Coolant
I
When your engine is cold, the coolant level should be at
the
COLD mark or a little higher. When your engine is
warm, the level should
be up to the HOT mark or a
little higher. If
this light comes on,
it means you’re low on
engine coolant.
Adding Coolant
If you need more coolant, add the proper DEX-COOL@
coolant mixture at the coolnnt wcovev tank, but be
careful not to spill it.
If the coolant recovery tank is completely empty, add
coolant to the radiator. (See “Engine Overheating” in
the Index.)
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Radiator Pressure Cap
Turning the radiator pressure cap when the
engine and radiator are hot can allow steam and
scalding liquids to blow out and burn you badly.
With the coolant recovery tank, you will almost
never have to add coolant at the radiator.
Never turn the radiator pressure cap
-- even a
little -- when the engine and radiator are hot.
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.
NOTICE:
Your radiator 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 with the overflow tube
on the radiator
filler neck.
When you replace your radiator pressure cap, an
AC@
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.
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Drunken Driving ................................ 4-3 Fabric Cleaning ............................. 6-46
Dual Automatic ComforTemp Climate Control
......... 3-7 Features and Controls ............................ 2-1
Dual ComforTemp Climate Control .................. 3-4 Filling Your Tank ................................ 6-5
Filter.Air
..................................... 6-15
Electrical Equipment. Adding
..... 2.20. 2-5 1. 3-35: 6-56
Electrical Equipment. Adding
........... 2-20. 3.35. 6-55
Electrical System
............................... 6-56
Electrochromic Daymight Rearview Mirror
.......... 2-47
Engine
........................................ 6-9
Coolant
..................................... 6-20
Coolant Heater
............................... 2-20
Coolant Level Check
.......................... 7-37
Coolant Temperature Gage
..................... 2-60
Coolant Temperature Light
..................... 2-60
Exhaust
..................................... 2-30
Identification
................................ 6-55
OilLevelCheck
.............................. 7-37
Overheating
................................. 5-15
Running While Parked
......................... 2-3 1
Specifications ................................ 6-63
Starting Your
................................ 2- I9
Engine011
.................................... 6-10
Adding
..................................... 6-11
Additives
................................... 6-13
Checking ................................... 6-11
Used
....................................... 6-14
What Kind to Use
............................. 6- I2
Whentochange
.............................. 6-14
Ethanol ........................................ 6-4
Exhaust. Engine
................................ 2-30
Exterior Lamps
................................. 2-41 Filter. Engine
Oil
............................... 6-14
Filter. Passenger Compartment Air
................. 6-16
Finish Care
.................................... 6-50
First Gear. Automatic Transaxle
................... 2-25
Flashers. Hazard Warning
......................... 5-2
Flat Tire
. Changjng ............................. 5-25
Fluids and Lubricants
............................ 7-42
Foreign Countries. Fuel
........................... 6-5
French Language Manual 11
Front Parking and Turn Signal Lamp
Bulb Replacement ............................ 6-31
FrontTowing
.................................. 5-11
Fuel .......................................... 6-3
Canadian
................................ 6-3. 6-5
Filling Your Tank
.............................. 6-5
Gage
....................................... 2-68
In Foreign Countries ........................... 6-5
Fuses and Circuit Bre.akers ....................... 6-57
Finish Damage
................................. 6-52
.. ...........................
Gages
Engine Coolant Temperature
.................... 2-60
Fuel
....................................... 2-68
Gear Positions. Automatic Transaxle
................ 2-22
GloveBox
.................................... 2-49
Gross Axle Weight Rating
........................ 4-29
GAWR
....................................... 4-29
Gross Vehicle Weight Rating
...................... 4-29
9-4
ProCarManuals.com

Malfunction Indicator Lamp .............. ... 2-62
Manual
DoorLocks
................................... 2-4
Front Seat
.................................... 1-2
Outside Mirrors .............................. 2-47
Manual Single Zone Climate Control
................ 3-2
Methanol
...................................... 6-4
Mirrors
....................................... 2-46
Electrochromic Day/Night Rearview
............. 2-47
Convex Outside
.............................. 2-48
Heated Foldaway Outside
...................... 2-48
Inside Day/Night Rearview
..................... 2-46
Manual Outside
.............................. 2-47
Power Outside
............................... 2-48
Visor Vanity
................................. 2-5 I
MMT ......................................... 6-4
Mountain Roads
................................ 4-22
Multifunction Lever
............................. 2-34
Net. Convenience
.............................. 2-49
Neutral. Automatic Transaxle
..................... 2-23
New Vehicle "Break-In"
......................... 2- I7
Nightvision ................................... 4-15
Odometer
.................................... 2-55
Odometer. Trip
................................. 2-55
Off-Road Recovery
............................. 4- 1 1
Oil. Engine .................................... 6-10
Oil Warning Light
.............................. 2-64
Overdrive.
(a) Automatic ................... 2-24.2-25
Overheating Engine
............................. 5- 15
Owner Checks and Services ....................... 7-37
Owner Publications. Ordering
..................... 8-10
Paint Spotting. Chemical ........................ 6-53
Park
Automatic Transaxle
.......................... 2-22
Shifting Into
................................. 2-27
Shifting
Out of ............................... 2-29
AtNight
.................................... 2-15
Brake
...................................... 2-26
Brake Mechanism Check
....................... 7-40
Lots
....................................... 2-15
Over Things That Burn
........................ 2-30
With
a Trailer ................................ 4-36
Passenger Compartment Air Filter
.................. 6-16
Passing
....................................... 4-12
PASS-Key
I1 ................................. 2-16
Periodic Maintenance Inspections
.................. 7-41
Power
Auxiliary Connection
.......................... 2-51
Option Fuses
................................ 6-56
Outside Mirrors
.............................. 2-48
Retained Accessory
........................... 2-46
Seat (Six-Way)
................................ 1-3
Steering
..................................... 4-9
Steering Fluid
................................ 6-24
Windows
................................... 2-32
Pregnancy . Use of Safety Belts .................... 1-18
Problems on the Road ............................ 5-1
Publications. Service and Owner
................... 8-10
Parking
DoorLocks
................................... 2-5
Publications. Service and Owner. Ordering
in Canada ... 8-9
9-7
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