cooling BUICK CENTURY 1994 Owners Manual

Anti-Lock Brake System Active Light
LOW
TRACTION
When your anti-lock
system is adjusting
brake pressure to help
avoid a braking
skid, the
“LOW
TRACTION’ light
will come on.
Slippery road conditions will exist if this light comes on,
so adjust your driving accordingly. The light will stay on
for
a few seconds after the system stops adjusting brake
pressure. The
“LOW TRACTION” light also comes on
briefly, as a
bulb check, when the engine is started.
Engine Coolant Temperature Warning
Light
k F- 4ccN
TEMP
This light tells you that
your engine coolant has
overheated or your radiator
cooling fan is not working.
If you have been operating
your vehicle under normal
driving conditions, you
should pull off the road,
stop your vehicle and turn
the engine
off as soon as
possible.
The chapter “Problems on the Road,” in this manual
explains what to do. See “Engine Overheating” in the
Index.
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Your Buick Comfort Control System
The air conditioner and heater work best if you keep
your windows closed while using them. Your vehicle
also has the flow-through ventilation system described
later in this section.
Lever Controls: The upper lever changes the functions
of your system. The lower lever changes the temperature
of the air coming through the system.
The lever next to the fan symbol selects the force of air
you want.
To turn the fan off, move the upper lever to the OFF
Air Conditioning
The upper lever has three air conditioner settings. On
very hot days, open the windows long enough to let hot
inside air escape. This reduces the amount of work your
air conditioner's compressor will have to do, which
should help fuel economy.
MAX: Provides maximum cooling with the least
amount of work. This setting recirculates much
of the
air inside your vehicle
so it maximizes your air
conditioner's performance and fuel economy.
NORM (Normal): Use for normal cooling on hot days.
This setting cools outside air and directs it through the
instrument panel outlets.
BI-LEV (Bi-Level): Use this on cool, but sunny days.
This setting brings in the outside air, and directs it in
two ways. The cool air is directed to the upper portion
of your body through the instrument panel outlets, and
warmed air is directed through the heater ducts and
defroster vents. At times this temperature difference
may be more apparent than others.
The air conditioner compressor operates in all Air
Conditioning positions, and in Defrost when the outside
temperature is above about 40°F (4.5"C).
position.
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Ventilation
For mild outside temperatures, when little heating or
cooling is needed, slide the upper lever
to VENT. Air
flow is through the instrument panel outlets. Rotate the
control next to the outlets to turn on, adjust or
turn off
the air flow. Adjust the lower lever
on the control panel
to the temperature desired.
Heating
When outside temperatures are cold, sliding the upper
lever
to HEATER and the lower lever to HOT will send
heated air through the heater ducts, and some through
the defroster vents. VENT and HEATER are labeled
ECONOMY positions because the air conditioner
compressor doesn't run in these two settings. This
reduces engine load, resulting in improved fuel
economy. If either setting fails to keep you comfortable,
or causes your windows
to fog up, slide the upper lever
to one of the Air Conditioning positions, or to DEF
(Defrost).
Defrosting
The DEF setting directs most of the air through the
defroster vents, and some through the heater ducts.
Defog
To quickly defog the windshield, set the upper lever to
DEF and move the fan switch to HI . Slide the lower
lever to
HOT.
In damp, cool weather (temperatures about 45 "-65"F,
7"- 1 8"C), you can use BI-LEV to defog the side
windows. Set the upper lever to BI-LEV and the fan
switch to
HI. Aim the side vents toward the side
windows. For increased air flow to the side vents, close
the center vents.
Rear Window Defogger (Option)
The rear window defogger
uses a warming grid to
remove fog from the rear
window. In winter, it can
also keep ice from forming
on the rear window.
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Hill and Mountain Roads
I.
. ...
Driving on steep hills or mountains is different from
driving in flat or rolling terrain. If you
drive regularly
in steep country, or if you're
planning
to visit there, here are some tips that can make
your trips safer and more enjoyable.
0 Keep your vehicle in good shape. Check all fluid
levels and also the brakes, tires, cooling system and
transaxle. These parts can work hard on mountain
roads.
Know how to go down hills. The most important
thing
to know is this: let your engine do some of the
slowing down. Shift to a lower gear when you go
down a steep or long hill.
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Load-pulling components such as the engine, transaxle,
wheel assemblies, and tires are forced
to work harder
against the drag of the added weight. The engine
is
required to operate at relatively higher speeds and under
greater loads, generating extra heat. What’s more, the
trailer adds considerably to wind resistance, increasing
the pulling requirements.
If
You Do Decide To Pull A Trailer
If you do, here are some important points.
There are many different laws having to do with
trailering. Make sure your rig will be legal, not on!y
where you live but also where you’ll be driving. A
good source for
this information can be state or
provincial police.
Consider using a sway control,
You can ask a hitch dealer about sway controls.
Don’t tow a trailer at all during the first 500 miles
(800 km) your new vehicle is driven. Your engine,
axle or other parts could be damaged.
0 Then, during the first 500 miles (800 km) that you
tow
a trailer, don’t drive over 50 mph (80 km/h) and
don’t make starts at full throttle. This helps your
engine and other parts
of your vehicle wear in at the
heavier loads.
Obey speed limit restrictions when towing a trailer.
Don’t drive faster than the maximum posted speed
for trailers (or no more than
55 mph (90 Km/h) to
save wear on your vehicle’s parts.
Three important considerations have to do
with weight:
Weight of the Trailer
Your vehicle can tow normally up to 1,000 pounds
(450kg). If your vehicle has a
3100 V6 engine with a
four-speed automatic transaxle and is equipped with the
optional heavy-duty engine cooling system,
it can tow
up to 2,000 pounds (900 kg).
It depends on how you plan to use your rig. For
example, speed, altitude, road grades, outside
temperature and how much your vehicle is used to pull a
trailer are all important. And,
it can also depend on any
special equipment that
you have on your vehicle.
You can ask your dealer for our trailering information or
advice, or
you can write us at Buick Motor Division,
Customer Assistance Center,
902 E. Hamilton Ave.,
Flint,
MI 48550.
In Canada, write to General Motors
of Canada Limited,
Customer Assistance Center,
1908 Colonel Sam Drive,
Oshawa, Ontario L1H
8P7.
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Parking on Hills
You really should not park your vehicle, with a trailer
attached, on
a hill. If something goes wrong, your rig
could
start to move. People can be injured, and both
your,vehicle and the trailer can be damaged.
But if
you ever have to park your rig on a hill, here’s
how to do it:
1. Apply your regular brakes, but don’t shift into
“P”
(Park) yet.
2. Have someone place chocks under the trailer wheels.
3. When the wheel chocks are in place, release the
regular brakes until the chocks absorb
the load.
4. Reapply the regular brakes. Then, apply your
parking brake, and then shift to
“P” (Park).
5. Release the regular brakes.
When You Are Ready to Leave After
Parking on a Hill
1. Apply your regular brakes and hold the pedal down
while you:
Start your engine;
Shift into a gear; and
Release the parking brake.
2. Let up on the brake pedal.
3. Drive slowly until the trailer is clear of the chocks.
4. Stop and have someone pick up and store the chocks.
Maintenance When Trailer Towing
Your vehicle will need service more often when you’re
pulling a trailer. See the Maintenance Schedule for more
on this. Things that are especially important in trailer
operation are automatic transaxle fluid (don’t overfill),
engine oil, belt, cooling system, and brake adjustment.
Each of these
is covered in this manual, and the Index
will help
you find them quickly. If you’re trailering, it’s
a good idea to review these sections before you start
your trip.
Check periodically to see that all hitch nuts and bolts are
tight.
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I
I.
A
If the coolant inside the coolant recovery tank is boiling,
don’t do anything else until it cools down.
The coolant level should be at or above the
“FULL
HOT” mark.
If it isn’t, you may have a leak in the radiator hoses,
heater hoses, radiator, water pump or somewhere else
in
the cooling system.
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NOTICE:
In cold weather, water can freeze and crack the
engine, radiator, heater core
and other parts. Use
the recommended coolant.
When the coolant in the coolant recovery tank is at or
above the the
“FULL HOT” mark, start your vehicle.
If the overheat warning continues, there’s one more
thing
you can try. You can add the proper coolant mix
directly to the radiator, but be sure the cooling system is
cool before you
do it.
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How to Add Coolant to the Radiator
NOTICE:
Your engine has a specific radiator fill procedure.
Failure
to follow this procedure could cause your
engine
to overheat and be severely damaged.
1. You can remove the
1 radiator pressure cap
when the cooling
system, including the
radiator pressure cap
and upper radiator hose,
is no longer hot. Turn
the pressure cap slowly
to the left until it first
stops. (Don't press
down while turning the
pressure cap.)
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How to Add Fluid
Refer to the Maintenance Schedule to determine what
kind of transaxle fluid
to use. See “Recommended
Fluids and Lubricants” in the Index.
Engine Coolant
If the fluid level is low, add only enough of the proper
fluid to bring the level into the cross-hatched area on the
dipstick.
1. Pull
out the dipstick.
2. Using a long-neck funnel, add enough fluid at the
It doesn’t take much fluid, generally less than a pint
(OSL).
Don’t overfill. We recommend you use only
fluid labeled DEXRON@-I11 or DEXRON@-IIE,
because fluids with that label are made especially for
your automatic transaxle. Damage caused by fluid other
than DEXRON@-I11 or DEXRON@-IIE is
not covered
by your new vehicle warranty. dipstick
hole
to bring it to the proper level.
After adding fluid, recheck the fluid level as
described under “How to Check.”
0 When the correct fluid level is obtained, push the
dipstick back in all the way. The following explains
your cooling system and how to
add coolant when it is low. If you have a problem with
engine overheating or if
you need to add coolant to your
radiator, see “Engine Overheating” in the Index.
The proper coolant for your Buick will:
0 Give freezing protection down to -34°F (-37°C).
0 Give boiling protection up to 262 “F ( 128 “C).
0 Protect against rust and corrosion.
Help keep the proper engine temperature.
0 Let the warning lights work as they should.
What to Use
Use a mixture of one-half clean water (preferably
distilled) and one-half antifreeze that meets “GM
Specification 1825-M,” which won’t damage aluminum
parts.
You can also use a recycled coolant conforming to
GM Specification 1825-M with a complete coolant flush
and refill. If you use this mixture,
you don’t need to add
anything else.
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