BUICK CENTURY 1993 Owners Manual

Rear Drum Brakes
Your rear drum brakes don’t have wear indicators, but if
you ever hear a rear brake rubbing noise, have the rear
brake linings inspected.
Also, the rear brake drums should
be removed and inspected each time the tires are removed
for rotation or changing. .When you have the front brakes
replaced, have the rear brakes inspected, too.
Brake linings should always be replaced as complete
axle sets.
Braking In Emergencies
At some time, nearly every driver gets into a situation
that requires hard braking. Your first reaction-to
hit the
brake
pedal hard and hold it down-may be the wrong
thing to do. Your wheels can stop rolling. Once they
do,
the vehicle can’t respond to your steering. Momentum
will carry it
in whatever direction it was headed when the
wheels stopped rolling. That could be
off the road, into
the very thing you were trying
to avoid, or into traffic.
Use a “squeeze” braking technique. This will give you
maximum braking while maintaining steering control.
You do
this by pushing on the brake pedal with steadily
increasing pressure.
Brake Pedal Travel
See your dealer if the brake pedal does not return to
normal height, or if there is a rapid increase in
pedal
travel. This could be a sign of brake trouble.
Brake Adjustment
Every time you make a moderate brake stop, your disc
brakes adjust for wear.
If you rarely make a moderate or
heavier stop, then your brakes might not adjust correctly.’
If you drive in that way, then-very carefully-make a
few moderate brake stops about every
1,0oO miles
(1 600 km), so your brakes will adjust properly.
If your brake pedal goes down farther than normal, your rear drum brakes may need adjustment. Adjust them by
backing up and
firmly applying the brakes a few times. In an emergency you will probably want
to “squeeze”
the
brakes hard without locking the wheels.
If you hear or
feel the wheels sliding, ease off the brake pedal. This will
help you retain steering control.
In many emergencies, steering can help you more than
even the very best braking.
149
ProCarManuals.com

Steering
Power Steering
If you lose power steering assist because the engine stops
or the system
fails to function, you can steer but it will
take much more effort.
Steering Tips
Driving on Curves
It’s important to take curves at a reasonable speed.
A lot of the “driver lost control” accidents mentioned on
the news happen on curves. Here’s why:
Experienced driver or beginner, each of us is subject to
the same laws of physics when driving on curves. The
traction
of the tires against the road surface makes it
possible for the vehicle to change its path when you turn
the front wheels. If there’s no traction, inertia will keep
the vehicle going
in the same direction. If you’ve ever
tried to steer a vehicle on wet ice, you’ll understand
this.
The traction you can get in a curve depends on the
condition
of your tires and the road surhce, the angle at
which the curve is banked, and your
speed. While you’re
in a curve, speed is the one factor you can control.
Suppose you’re steering through
a sharp curve. Then you
suddenly apply
the brakes. Both control systems-
steering and braking-have
to do their work where the
tires meet the road. Adding the hard braking can demand
too much at those places. You can lose control.
The
same thing can happen if you’re steering through a’
sharp curve and you suddenly accelerate. Those two
control systems-steering and acceleration-can
overwhelm those places where the tires meet the road and make you lose ‘control.
What should you do
if this ever happens? Let up on the
brake or accelerator
pedal, steer the vehicle the way you
want it to go, and slow down.
Speed limit signs near curves warn that you should adjust
your
speed. Of course, the posted speeds are based on
good weather and road conditions. Under less favorable
conditions you’ll want
to go slower.
If you need to reduce your speed as you approach a
curve, do it before you enter the curve, while your front
wheels
are straight ahead. Try to adjust your speed so
you can “drive” through the curve. Maintain a
reasonable, steady speed. Wait to accelerate until you are
out of the curve, and then accelerate gently into the
straightaway.
When you drive
into a curve at night, it’s harder to see
the road ahead of you because it bends away .from the
straight beams of your lights.
This is one good reason to
drive slower.
ProCarManuals.com

Steering in Emergencies
There are times when steering can be more effective than
braking. For example, you come over a hill and find a
truck stopped in your lane, or a car suddenly pulls out
from nowhere, or a child darts out from between parked
cars and stops right in front of you. You can avoid these
problems
by braking-if you can stop in time. But
sometimes you can’t; there isn’t room. That’s the time for
evasive action-steering around the problem. Your Buick
can perform very well in emergencies like
these. First apply your brakes, but not enough to lock
your wheels.
It is better to remove as much speed as you
can from a possible collision. Then steer around the
problem, to the
left or right depending on the space
available.
An emergency like this requires close attention and a
quick decision. If you are holding the steering wheel at
the recommended
9’ and 3 o’clock positions, you can turn
it a full
180 degrees very quickly without removing either
hand. But you have to act fast, steer quickly, and just as
quickly straighten the wheel once you have avoided the
object. You must then be prepared to steer back to your
original lane and then brake to
a controlled stop.
Depending on your speed,
this can be rather violent for
an unprepared driver. This is one of the reasons driving
experts recommend that you use your safety belts and
keep both hands on the steering wheel.
The fact that such emergency situations are always
possible is a good reason to practice defensive driving at all times.
151
ProCarManuals.com

Iff-Road Recovery
You may find sometime that your right wheels have
dropped
off the edge of a road onto the shoulder while
you’re driving.
If the level of
the shoulder is only slightly below the
pavement, recovery should be hirly easy. Ease off the
accelerator and then, if there is nothing in the way, steer
so that your vehicle straddles the edge of the pavement.
You can
turn the steering wheel up to % turn until the
right front tire contacts the pavement edge. Then
turn
your steering wheel to go straight down the roadway.
I
If the shoulder appears to be about four inches (100 mm)
or more below the pavement, this difference can cause
problems. If there
is not enough room to pull entirely
onto the shoulder and stop, then follow the same
procedures. But if the right front tire scrubs against the
side of the pavement, do
NOT steer more sharply. With
too much steering angle, the vehicle may jump back onto
the road with
so much steering input that it crosses over
into the oncoming traffic before you can bring it back
under control.
Instead, ease
off again on the accelerator and steering
input, straddle the pavement once more, then
try again.
passing
The driver of a vehicle about to pass another on a two-
lane highway waits for just the right moment, accelerates,
moves around the vehicle ahead, then goes back into the
right lane again.
A simple maneuver?
Not necessarily! Passing another vehicle on a two-lane
highway is a potentially dangerous move, since the
passing vehicle occupies the same lane as oncoming
traffic for several seconds.
A miscalculation, an error in
judgment, or a brief surrender to frustration or anger can
suddenly put the passing driver face to face with the
worst of all traffic accidents-the head-on collision.
152
ProCarManuals.com

So here are some tips for passing:
“Drive ahead:’ Look down the road, to the sides, and
to crossroads for situations that might affect your
passing patterns. If you have any doubt whatsoever
about making a successful pass, wait for a better time.
Watch for traffic signs, pavement markings, and lines.
If you can
see a sign up ahead that might indicate a
turn or an intersection, delay your pass. A broken
center line usually indicates it’s
all right to pass
(providing the road ‘ahead is clear). Never cross a solid \
line on your side of the lane or a double solid line, even
if the road seems empty of approaching traffic.
If you suspect that the driver of the vehicle you want to
pass isn’t aware of your presence, tap the horn a couple
of times before passing.
Do not get too close to the vehicle you want to pass
while you’re awaiting
an opportunity. For one thing,
following too closely reduces your area
of vision,
especially if you’re following a larger vehicle. Also,
you won’t have adequate space if the vehicle ahead
suddenly slows or stops. Keep back a reasonable
distance.
When it looks like a chance to pass is coming up, start
to accelerate but stay in the right lane and don’t get too
close. Time your move
so you will be increasing speed
as the time comes to move into the other lane. If the
way is clear to pass,
you will have a “running start’’
that more than makes up for the distance you would
lose
by dropping back. And if something happens to
cause you to cancel your pass, you need only slow
down and drop back again and wait
for another
opportunity.
If other cars are lined up to pass a slow vehicle, wait
your turn. But take care that someone isn’t trying
to
pass you as you pull out to pass the slow vehicle.
Remember to glance over your shoulder and check the
blind spot.
start your left lane change signal before moving out of
the right lane to pass. When you are far enough ahead
of the passed vehicle to see its front
in your inside
mirror, activate your right lane change signal and move
back into
the right lane. (Remember that your right
outside mirror
is convex. The vehicle you just passed
may seem to be farther away from you
than it really is.)
Try not to pass more than one vehicle at a time on two-
lane roads. Reconsider before passing the next vehicle.
Check your mirrors, glance over your shoulder, and
ProCarManuals.com

Don’t overtake a slowly moving vehicle too rapidly.
Even though the brake lights are not flashing, it
may be
slowing down or starting to turn.
driver to get ahead of you. Perhaps you can ease a little
to the right.
If you’re being passed, make it easy for the following
Loss of Control
Let’s review what driving experts say about what happens
when the three control systems (brakes, steering and
acceleration) don’t have enough friction where the tires
meet the road
to do what the driver has asked.
In any emergency, don’t give up. Keep trying to steer and
constantly
seek an escape route or area of less danger.
Skidding
In a skid, a driver can lose control of the vehicle.
Defensive drivers avoid most skids
by taking reasonable
care suited
to existing conditions, and by not
“overdriving” those conditions. But skids are always
possible.
The three types
of skids correspond to your Buick‘s three
control systems. In the braking skid your wheels aren’t
rolling.
In the steering or cornering skid, too much speed
or steering in a curve causes tires to slip and lose
cornering force. And
in the acceleration skid too much
throttle causes the driving wheels to spin.
I
A cornering skid and an acceleration skid are best
handled by easing your foot
off the accelerator pedal. If
your vehicle starts to slide (as when you turn a corner on
a wet, snow- or ice-covered road), ease your
foot off the
accelerator pedal as soon as you feel the vehicle start to
slide. Quickly steer the way you want the vehicle to go. If
you
start steering quickly enough, your vehicle will
straighten out. As it does, straighten the front wheels.
Of course, traction is reduced when water, snow, ice,
gravel, or other material is on the road.
For safety, you’ll
want to slow down and adjust your driving
to these
conditions. It is important to slow down on slippery
surfaces because stopping distance will be longer and
vehicle control more limited.
While driving on a surfhce
with reduced traction, try
your best to avoid sudden steering, acceleration, or
braking (including engine braking
by shifting to a lower
gear).
Any sudden changes could cause the tires to slide.
You may not realize the surface is slippery until your
vehicle is skidding.
Learn to recognize warning clues-
such as enough water, ice or packed snow on the road
to
make a “mirrored surface”-and slow down when you
have
any doubt.
154
ProCarManuals.com

In a braking skid (where the wheels are no longer
rolling), release enough pressure on the brakes to get the
wheels rolling again.
This restores steering control. Push
the brake
pedal down steadily when you have to stop
suddenly.
As long as the wheels are rolling, you will have
steering control. Steer the way you want to go.
Driving at Night
Night driving is more dangerous than day driving. One
reason is that some drivers are likely to be impaired-by
alcohol or drugs, with night vision problems, or by fatigue.
Here are some tips on night driving.
Drive defensively. Remember, this is the most
dangerous time.
Don’t drink and drive. (See “Drunken Driving” in the
Index for more on this problem.)
Adjust your inside rearview mirror to reduce the glare
from headlights behind you.
Since you can’t see as well, you may need to slow
down and keep more space between you and other
vehicles. It’s hard to tell how fast the vehicle ahead is
going just by looking at its taillights.
Slow down, especially on higher speed roads. Your
headlights can light up only
so much road ahead.
In remote areas, watch for animals.
If you’re tired, pull off the road in a safe place and rest.
ProCarManuals.com

Night Vision
No one can see as well at night as in the daytime, but as
we get older these differences increase. A 50-year-old
driver may require at least twice as much light to
see the
same thing at night as a 20-year-old.
What you do in the daytime can also afkct your night
vision. For example, if you spend the day in bright
sunshine you are wise to wear sunglasses. Your eyes will
have less trouble adjusting to night.
But if you’re driving, don’t wear sunglasses at night.
They may cut down on glare from headlights, but they
also make a lot of things invisible that should remain
visible-such as parked cars, obstacles, pedestrians, or
even trains blocking railway crossings. You may want to
put on your sunglasses after you have pulled into a
brightly-lighted service or refreshment area. Eyes
shielded from that glare may adjust more quickly to
darkness back on the road. But be sure to remove your
sunglasses before you leave the service area.
You can be temporarily blinded by approaching lights. It
can take
a second or two, or even several seconds, for
your eyes to readjust to the dark. When you
are hced
with severe glare (as from a driver who doesn’t lower the \
high beams, or a vehicle with
misaimed headlights) slow
down a little. Avoid staring directly into the approaching
lights. If there
is a line of opposing traffic, make
occasional glances over the line of headlights to make
certain that. one of the vehicles isn’t starting to move
into
your lane. Once you are past the bright lights, give your
eyes time to readjust before resuming
speed.
156
ProCarManuals.com

High Beams
If the vehicle approaching you has its high beams on,
signal by flicking yours to high and then back to low
beam. This is the usual signal to lower the headlight
beams. If the other driver still doesn’t lower the beams,
resist the temptation to put your high beams on. This
only makes two half-blinded drivers.
On a freeway, use your high beams
only in remote areas
where you won’t impair approaching drivers.
In some
places, like cities, using high beams is illegal.
When you follow another vehicle on a freeway or
highway, use low beams. True, most vehicles now have
day-night mirrors that enable the driver to reduce glare.
But outside mirrors are not
of this type and high beams
from behind can bother the driver ahead.
A Few More Night Driving Suggestions
Keep your windshield and all the glass on your vehicle
clean-inside and out. Glare at night is made much
worse by dirt on the glass. Even the inside of the glass
can build up
a fdm caused by dust. Tobacco smoke also
makes inside glass surfaces very filmy and can be a
vision hazard
if it’s left there.
Dirty glass makes lights dazzle and flash more than clean
glass would, making the pupils
of your eyes contract
repeatedly. You might even want to keep a cloth and
some glass cleaner in your vehicle if you need to clean
your glass frequently.
Remember that your headlights light up
fhr less of a
roadway when you are in a turn or curve.
Keep your eyes moving; that way, it’s easier to pick out
dimly lighted objects.
Just as your headlights should be checked regularly for
proper aim,
so should your eyes be examined regularly.
Some drivers suffer from night blindness-the inability to
see in dim light-and aren’t even aware of it.
ProCarManuals.com

Driving in the Rain
Rain and wet roads can mean driving trouble. On a wet
road you can’t stop, accelerate or
turn as well because
your tire-to-road traction isn’t as good as on dry roads.
And, if your tires don’t have much tread left, you’ll ge\
t
even less traction.
It’s always wise to go slower and be cautious
if rain starts
to hll while you are driving. The surface may get wet
suddenly when your reflexes are tuned for driving on dry
pavement. The heavier the
rain, the harder it is to see. Even if your
windshield wiper blades are in
good shape, a heavy rain
can make
it harder to see road signs and traffic signals,
pavement markings, the edge of the road, and even
people walking. Road spray can often be worse for vision than rain, especially if it comes from a dirty road.
So it is wise to keep your wiping equipment in good
shape and keep your windshield washer
tank filled.
Replace your windshield wiper inserts when they show signs of streaking or missing areas on the windshield, or
when strips of rubber
start to separate from the inserts.
158
ProCarManuals.com