1994 BUICK CENTURY air conditioning

Vehicle Symbols
These are some of the symbols you may find on your vehicle.
Fur example,
these symbols
are used on an
original battery:
POSSIBLE A
CAUTION
INJURY
PROTECT EYES BY
SHIELDING
Q
CAUSTIC
BURNS AVOID
SPARKS
OR
FLAMES
SPARK
OR ,\I/,
COULD FLAME
EXPLODE BATTERY
These symbols
are important
for you and
your passengers whenever your
vehicle is
driven:
FASTEN SEAT 4
BELTS
POWER
WINDOW
AIRBAG P
These symbols have
to do with
your lights:
SIGNALS e
TURN
HIGH BEAM
OR = =o
FOG LAMPS $0
These symbols
are
on some of
your controls:
WIPER v
WINDSHIELDw DEFROSTER
WINDOW
DEFOGGER
VENTILATING FAN
These symbols
are used
on
warning and
indicator lights:
COOLANT F&
TEMP -.--
ENGINE
CHARGING
I-1
BAllERY SYSTEM
RADIATOR COOLANT
a
FUEL
ENGINE OIL e,
PRESSURE
TEMP
OIL 4%
ANTILOCK (@)
BRAKE
Here are some
other symbols
you may see:
FUSE
RADIO
k
VOLUME J
CONDITIONING A'R 0
RELEASE 6
TRUNK
LIGHTER
m
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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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Press the ON portion of the switch. The indicator light
will glow. The rear window defogger will turn off
automatically after about
10 minutes of use. You can
also turn it off by turning
off the ignition or pressing the
OFF portion of the switch.
I NOTICE:
Don’t use a razor blade or somerning else sharp
on the inside
of the rear window. If you do, you
could cut or damage the warming grid, and the repairs wouldn’t be covered by your warranty.
Flow-Through Ventilation System
Your Buick’s flow-through ventilation system supplies
outside air into the vehicle when it
is moving. Outside
air will also enter the vehicle when the heater or the air
conditioning fan is running.
Ventilation Tips
Keep the hood and front air inlet free of ice, snow, or
any other obstruction (such as leaves). The heater
and defroster will work far better, reducing the
chance of fogging the inside of your windows.
When you enter a vehicle in cold weather, turn the
blower fan
to HI for a few moments before driving
off. This helps clear the intake ducts of snow and
moisture, and reduces
the chance of fogging the
inside of your windows.
Keep the air path under the front seats clear of
objects. This helps air to circulate throughout your
vehicle.
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Capacities and Specifications
Engine Code 3100 MFI V6 Code M (L82)
Belt Tensions - Fuel Tank Capacity -
Automatically controlled by a self-tensioning idler 16.5 gallons/62.6 liters
pulley. Tension adjustment should never be
Automatic Transaxle Capacity -
(4T60-E) 4-Speed
necessary.
Complete System
- 1 1.6 quarts/l0.9 1
Cooling System Capacity -
Crankcase Capacity (Less Filter) -
4 quarts/3.8 liters iters
Air
Conditioning Refrigerant Capacity (R-134a) -
2.0 lbs. (0.90 kilograms)
Not all air conditioning refrigerants are the same.
If the air conditioning system
in your vehicle
needs refrigerant, be sure
the proper refrigerant
is used.
If you’re not sure ask your Buick dealer.
For additional information, see your “Warranty
and Owner Assistance Information’’ booklet. Pan
Removal and Replacement
-
6 quarts/5.7 liters
8 quarts/7.6 liters
After
Complete Overhaul
-
Maintenance Item Part Numbers -
Air Filter - A1233C
Fuel Filter
- GF580A
Oil Filter
- PF47
PCV Valve
- CV892C
Spark Plug
- R44LTSM6, GAP 0.60” (1 SOmm)
3 rn
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Capacities and Specifications
I
I Engine Code 4 (LN2) 2.2L L4 PFI
Belt Tensions -
Automatically controlled by an idler pulley.
Tension adjustment should never be necessary.
Cooling System Capacity -
Complete System - 8.74 quarts/8.27 liters
Crankcase Capacity (Less Filter) -
4 quarts/3.8 liters
Air Conditioning Refrigerant Capacity (R-134a) -
1.75 lbs. (.79 kilograms)
Not all air conditioning refrigerants are
the same.
If the air conditioning system in your vehicle
needs refrigerant, be sure the proper refrigerant
is used.
If you’re not sure ask your Buick dealer.
For additional information, see your “Warranty
and Owner Assistance Information” booklet.
Fuel Tank Capacity -
Automatic Transaxle Capacity -
16.5 gallons/62.6 liters
(3T40) 3-Speed
Pan Removal and Replacement
-
After Complete Overhaul - 7 quarts/6.6 liters
4 quarts/3.8 liters
Maintenance Item Part Numbers -
Air Filter - A905C
Oil Filter - PF47
PCV Valve - CV9OOC
Spark Plug
- 41-908, GAP 0.06” (1.502mm)
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Explanation of Scheduled Maintenance
Services
Below are explanations of the services listed in Schedule
I and Schedule
11.
The proper fluids and lubricants to use are listed in
Section D. Make sure whoever services your vehicle uses
these. All parts should
be replaced and all necessary
repairs done before you or anyone else drives the vehicle.
NOTE: To determine your engine’s displacement and
code, see “Engine Identification” in the Index.
1. Engine Oil and Filter Change* -- Always use SH
or SG Energy Conserving I1 oils of proper viscosity.
The
“SH or SG’ designation may be shown alone or
in combination with others, such as “SH/CD’ or
“SH, SG, CD,” “SG/CD,”etc. To determine the
preferred viscosity for your vehicle’s engine (e.g.,
SAE 5W-30 or SAE 10W-30), see “Engine Oil” in
the Index.
2. Chassis Lubrication -- Lubricate the transaxle shift
linkage, parking brake cable guides, underbody
contact points and linkage. If your vehicle is equipped with grease fittings, lubricate the suspension and steering linkage. 3.
Tire and Wheel Rotation and Inspection -- For
proper wear and maximum tire life, rotate your tires
following the instructions in this manual. See “Tires,
Inspection
& Rotation” in the Index. Check the tires
for uneven wear or damage. If you see irregular or
premature wear, check the wheel alignment. Check
for damaged wheels also.
4. Engine Accessory Drive Belt(s) Inspection --
Inspect the belt(s) for cracks, fraying, wear and
proper tension. Replace as needed.
5. Cooling System Service* -- Drain, flush and refill
the system with new or approved recycled coolant
conforming to GM Specification 1825M. Keep coolant
at the proper mixture as specified.
See “Coolant” in the
Index.
This provides proper freeze protection and boil
protection, corrosion inhibitor level and maintain
proper engine operating temperature.
Inspect hoses and replace if they are cracked,
swollen or deteriorated. Tighten screw type hose
clamps. Clean the outside of the radiator and air
conditioning condenser. Wash the pressure cap and
neck
To help ensure proper operation, we recommend a
pressure test
of both the cooling system and the
pressure cap.
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