steering BUICK CENTURY 1993 User Guide

You have three systems that make your vehicle go where
you want it to go. They are the brakes, the steering and
the accelerator.
All three systems have to do their work at
the places where the tires meet the road.
Sometimes, as when you’re driving on snow
or ice, it’s
easy to ask more of those control systems than the tires
and road can provide. That means you can lose control of
your vehicle.
Braking
Braking action involves perception time and reaction time.
First, you have to decide to push on the brake pedal.
That’s
perception time. Then you have to bring up your
foot and do it. That’s
reaction time.
Average reaction time is about 34 of a second. But that’s
only
an average. It might be less with one driver and as
long as
two or three seconds or more with another. Age,
physical condition, alertness, coordination and eyesight
all play a part.
So do alcohol, drugs and frustration. But
even in
% of a second, a vehicle moving at 60 mph
(100 ludh) travels 66 feet (20 m). That could be a lot of
distance
in an emergency, so keeping enough space
between your vehicle and others is important.
And, of course, actual stopping distances vary greatly
with the surf$ce of the road (whether it’s pavement or
gravel); the condition of the road (wet, dry, icy); tire
tread; and the condition of your brakes.
Most drivers treat their brakes with care. Some, however,
overwork the braking
system with poor driving habits.
Avoid needless heavy braking. Some people drive in
spurts-heavy acceleration followed
by heavy
braking-rather than keeping pace with traffic.
This is
a mistake. Your brakes may not have time to cool
between hard stops. Your brakes
will wear out much
faster
if you do a lot of heavy braking.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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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.
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Driving on Snow or Ice
Most of the time, those places where your tires meet the
road probably have’good traction.
However, if there is
snow or ice between your tires and
the road, you can have a
very slippery situation. You’ll
have a lot less traction or “grip” and will need to be very
careful.
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I
.. .
What’s the worst time for this? “Wet ice? Very cold snow
or ice can be slick and hard to drive on. But
wet ice can
be even more trouble because it may offer the least traction
of all. You can get “wet ice” when it’s about
freezing
(32°F; OOC) and freezing rain begins to fall. Try
to avoid driving on
wet ice until salt and sand crews can
get there.
Whatever the condition-smooth ice, packed, blowing or
loose snow-drive with caution. Accelerate gently. Try
not to break the fragile traction. If you acceierate too hst, the drive wheels will spin and polish the surface
under the tires even more. You’ll want to brake very
gently, too. Begin stopping sooner than you would on dry
pavement. If you feel your vehicle begin to slide, let up
on the brakes a little. fish the brake pedal down steadily
to get the most traction you can.
Remember, if you brake
so hard that your wheels stop
rolling, you’ll just slide. Brake
so your wheels always
keep rolling and you can still steer.
Allow greater following distance on any slippery road.
Watch for slippery spots. The road might be fine until
you hit a spot that’s covered with ice. On an otherwise
clear road, ice patches may appear
in shaded areas
where the sun can’t reach: around clumps of trees,
behind buildings, or under bridges. Sometimes the
surfixe of a curve or an overpass may remain icy when
the surrounding roads are clear. If you see a patch
of
ice ahead of you, brake before you are on it. Try not to
brake while you’re actually
on the ice, and avoid
sudden steering maneuvers.
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Driving with a Trailer
Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you’ll want to get t\
o
know your rig. Acquaint yourself with the
feel of
handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle you
are driving
is now a good deal longer and not nearly
so responsive as
your vehicle is by itself.
Before you
start, check the trailer hitch and platform, safety
chains, electrical connector, lights, tires and mirror
adjustment. If the trailer has electric brakes,
start your vehicle
and trailer moving and then apply the trailer brake controller \
by hand to be sure the brakes
are working. This lets you
check your electrical connection at the same time. During
your trip, check occasionally
to be sure that the load is secure,
and that the lights and any trailer brakes are still working.
Following Distance
Stay at least twice as fit, behind the vehicle ahead as you
would when driving your vehicle without a trailer. This
can help you avoid situations that require heavy braking
and sudden turns.
Passing
You’ll need more passing distance up ahead when you’re
towing
a trailer. And, because you’re a good deal longer,
you’ll
need to go much farther beyond the passed vehicle
before you can return to your lane.
Backing Up
Hold the bottom of the steering wheel with one hand.
Then, to move the trailer to the left, just move that hand
to the left.
To move the trailer to the right, move your
hand to the right. Always back up slowly and, if
possible, have someone guide you.
Making nrns
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 Mler
When you tow a trailer, your vehicle has to have a
different turn signal flasher and extra wiring. The green arrows on your instrument panel will flash whenever you
signal a turn or lane change. Properly hooked up, the
trailer lights 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.
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when your vehicle is being towed, have the ignition key Front Towing Hook-Ups
off. The steering wheel should be clamped in a straight-
ahead position, with a clamping device designed for
towing service.
Do not use the vehicle’s steering column
lock for
this. The transaxle should be in Neutral and the
parking brake released.
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Don’t have your vehicle towed on the front wheels, unless
you must. If the vehicle must be towed on the front
wheels, don’t go more than
35 mph (56 km/h) or farther
than
50 miles (80 km) or your transaxle will be damaged.
If these limits must be exceeded, then the front wheels
have
to be supported on a dolly.
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I
&!, CAUTION:
A vehicle can fall from a car carrier if It Isn’t
properly secured.
This can cause a colllsion,
serious personal injury and vehicle damage.
The vehicle should be tightly secured with Before hooking up to a tow truck, be sure to read all the
chains or steel cables before it is transported. information in “Towing Your Buick” earlier in this part.
Don’t use substitutes (ropes, leather straps, I
1. Attach T-hook chains behind the front wheels into the
canvas webbing, etc.) that can be cut by sharp bottom of the floor pan on both sides.
edges underneath the towed vehicle. I
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