1994 PONTIAC BONNEVILLE cooling

Features & Controls
SYSTEMS MONITOR
0
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Warning Lights (CONT.)
I
I-] INFORMATION DRIVER
CHECK OIL LEVEL - LAMP
WASHER FLUID
CHECK QAQES LOW
COOLANT
moo DOOR TRUNK AJAR TURN SIONAL
BACK UP TAIL
BRAKE LAMP
MILES TRIP
(][TEiir] ENGINE SOON
[E][--
Engine Coolant Temperature Warning
Light
This light tells you that your engine
coolant has overheated or your radiator
cooling fans are 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.
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Comfort Controls & Audio Systems
Standard Climate
Control
The air conditioner and heater work best
if you keep your windows closed while
using them.
% : Selects the force of air you want.
The fan is always running unless the
mode control is moved to
“OFF”.
Temperature Control: The center
control regulates the temperature of the
air coming through the system.
Mode Control: The right control has
settings for air conditioning and non-air
conditioning modes.
Air Conditioning Settings
There are three air conditioning settings.
On very hot days, open the windows long
enough
to let hot inside air escape. This
reduces the time your air conditioner’s
compressor will have to run, which
should help fuel economy.
MAX: Provides maximum cooling or
quick cool-down
on very hot days. This
setting recirculates much of the air inside
your vehicle, and
it should not be used for
long periods because the air may become
too cold and dry.
A/C: Use for normal cooling on hot days.
This setting cools outside air and directs
it
through the instrument panel outlets.
‘H (Bi-Level): Use on cool, but sunny
days. This setting brings in the outside air,
but directs it in two ways. The cool air is
directed to the upper portion
of your body
through the instrument panel outlets, but
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 conditioner positions, and in
A0
we
(Defrost) and ’# (Defog) when the
outside temperature is above
42°F. When
the air conditioner is on,
you may
sometimes notice slight changes
in your
vehicle’s engine speed and power. This is
normal, because the system is designed to
cycle the compressor
on and off to keep
the desired cooling and help fuel
economy.
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Comfort Controls & Audio Systems
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0 0
Electronic Climate Control
(OPTION)
When the engine is cold, the “AUTO’
blower is delayed/reduced until warm
air is available. Immediately selecting
90°F farenheit will NOT get the car
warmer any sooner than selecting
75
“AUTO”. The “DEFROST” blower
speed starts low to reduce windshield
fogging from any snow on the hood as
you start driving. The blower will
increase briefly after short stops when
the car had been turned
off to reduce
any stuffy feeling.
The A/C will only work when the
outside temperature gets above
42°F.
A “click” noise means the A/C
compressor is turned on. Besides
cooling, this is used to dehumidify and
filter the air for inside the car.
A hot, sunny parking lot or city traffic
will cause the system to start
re-circulating A/C air for quicker
cooling. The system is more efficient
by cooling the air already inside the
car.
EZ-Kool Glass is very effective in
filtering out the sun’s heat.
0 The direction of the cold A/C air can
be controlled by adjusting the outlets
in the dash. Aiming them just over
your shoulder will benefit both front
and rear passengers. Back-seat
passengers can also redirect airflow at
the rear of center console.
The air conditioner compressor operates
in all “AUTO” setting positions, and in
%? (Defrost) when the outside
temperature is above
42°F. When the air
conditioner is on, you may sometimes
notice slight changes in your vehicle’s
engine speed and power. This is normal,
because the system
is designed to cycle
the compressor on and off to keep the
desired cooling and help fuel economy.
TEMP: Sets the interior temperature you
want. The temperature you set will be
displayed on the digital screen.
Once you set the temperature, the system
will try to maintain the set temperature,
whether or not
you are using the heating
or cooling controls. But
if you set the
temperature for
60°F ( 16°C) or 90°F
(32”C), the fan will stay on “HI” speed
unless you select a different speed.
AUTO: To allow the system to
automatically control the temperature, air
Jistribution and fan speed:
1. Set the temperature you want with the
“TEMP” switch.
2. Press the “AUTO” switch.
EXT. TEMP: Press to have the exterior
temperature displayed
on the digital
screen (unless the system is off). Press
again to return to the inside temperature
setting. When the system is off, the
outside temperature will be displayed.
Use the following controls when “AUTO’
is not desired.
% : Sets the fan speed. Press the top of
the switch to raise the fan speed, the
bottom of the switch to lower the fan
speed.
“F/C: Press this to read the temperature in
degrees Fahrenheit or Celsius.
OFF: Shuts the system off. The outside
temperature will be displayed. Air
will
still flow through your vehicle if it is
moving. Also, the system will try to
maintain the temperature you set, but,may
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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.
2.
3.
4.
5.
Apply your regular brakes, but don’t
shift into
“P” (Park) yet.
Have someone place chocks under the
trailer wheels.
When the wheel chocks are in place,
release the regular brakes until the chocks absorb the load.
Reapply the regular brakes. Then
apply your parking brake, and then shift to
“F”’ (Park).
Release the regular brakes.
When You Are Ready to Leave After
Parking
on a Hill
1.
2.
3.
4.
Apply your regular brakes and hold
the pedal down while you:
0 Start your engine;
Shift into a gear; and
0 Release the parking brake.
Let up on the brake pedal.
Drive slowly until the trailer is clear
of the chocks.
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(s),
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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If No Steam Is Coming
From Your Engine
If you get the overheat warning but see or
hear no steam, the problem may not be
too serious. Sometimes the engine can get
a little too hot when you:
0 Climb a long hill on a hot day.
0 Stop after high speed driving.
0 Idle for long periods in traffic.
Tow a trailer.
If you get the overheat warning with
no
sign of steam, try this for a minute or so:
1. Turn off your air conditioner.
2. Turn on your heater to full hot at the
highest fan speed and open the
window as necessary.
3. If you’re in a traffic jam, shift to “N”
(Neutral).
If you no longer have the overheat
warning, you can drive. Just to be safe,
drive slower for about ten minutes. If the
warning doesn’t come back on, you can
drive normally.
If the warning continues, pull over, stop,
and park your vehicle right away.
If there’s still no sign of steam, you can
idle the engine for two or three minutes
while you’re parked, to see
if the warning
stops.
But then,
if you still have the warning,
TURN
OFF THE ENGINE AND GET
EVERYONE OUT
OF THE VEHICLE
until it cools down.
You may decide not to lift the hood but to
get service help right away.
11
Cooling System
When you decide it’s safe to lift the hood,
here’s what you’ll see:
(A) Coolant recovery tank
(B) Radiator pressure cap
(C) Electric engine fan
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Problems on the Ro,ad
... .
I
Cooling System (CONT.)
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 COLD’ 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.
NOTICE:
Engine damage from running your
engine without coolant isn’t covered
by your warranty.
If there seems to be no leak, check to see
if the electric engine fan is running. If the
engine
is overheating, the fan should be
running. If it isn’t, your vehicle needs
service.
How to Add Coolant to the
Coolant Recovery Tank
If you haven’t found a problem yet, but
the coolant level isn’t
at or above the
“FULL COLD’ mark, add
a 50/50
mixture of clean water (preferably
distilled) and
a proper antifreeze at the
coolant recovery tank. (See “Engine Coolant”
in the Index for more
information about the proper coolant
mix.)
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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 “FULL COLD’
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.
179.
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Problems on the Road
How to Add Coolant to the
Radiator:
1. You can remove the 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.)
If
you hear a hiss, wait for that to stop.
A hiss means there is still some
pressure left.
. . . 180
2. Then keep turning the pressure cap,
but now push down as you turn it.
Remove the pressure cap. 3. Fill the radiator with the proper mix,
up to the base
of the filler neck.
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