1992 HONDA PRELUDE cooling

Heating and Cooling

To Cool

To operate the air conditioner,
press the air conditioning button.

Set the fan to the desired speed.
You can also use the mode
button to direct air out of the dash

and heater vents.

To cool the interior down rapidly after the car has been sitting in the

sun:
1. Start the engine.

2. Turn o
n the A/C by pressing the

button.

3. Set

the fan to maximum speed.
4.


Open the windows partially.

Select the Recirculation mode
and

When the
interior reaches a com-

fortable temperature, close the

windows and set the system for
cooling as described above.
MODE BUTTONS


AIR CONDITIONER
BUTTON
TEMPERATURE
CONTROL LEVER

The air conditioner places an extra
load on the engine. Watch the
coolant temperature gauge (see
page 38 ) when using the A/C in
heavy traffic or driving up long
hills. If the temperature indication
climbs near the H, turn off the air
conditioner until the gauge reads
normally.
FAN CONTROL

LEVER

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Heating and Cooling

To Dehumidify and Defog
with A/C

An air conditioner removes mois-
ture from the air as it operates.
You can use it to defog the win-
dows quickly in cool or damp wea-
ther. Used in combination with the
heater, it also makes the interior
warm and dry. This setting is best
for all driving conditions whenever
the outside temperature is above
32°F (0°C).
1. Set the fa n to a medium speed.
2. Tur n
on the air conditioner.
3. Select any desired mode button; is usually best.
4. Adjust the temperature control lever so the mixture of heated
and cooled air is at a comfortable
temperature.
You can defog the side windows more quickly by shutting the
corner vents and opening the side
defroster vents.
MODE BUTTONS


AIR CONDITIONER
BUTTON
TEMPERATURE CONTROL LEVER FAN CONTROL

LEVER

CONTINUED

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Heating and Cooling

To Heat

To warm the interior, press and select the Fresh Air
mode. Set the fan to the desired
speed. Adjust the warmth of the air
with the temperature control lever.
To warm the interior rapidly after
the car has been sitting out in cold
weather.
1. Start the engine.

2. Select
the Recirculation mode

and

3. Slide the temperature control

lever to maximum heat.

4. Leave
the fan OFF for the first

few minutes. When the tempera-
ture gauge rises above the bot-
tom white mark, set the fan to
medium speed.

5. Whe
n
the interior warms up,
switch to fresh air mode and
adjust the temperature control
lever to a comfortable setting.
To Defrost

To remove frost or ice from the
windshield and side windows after the car has been sitting out in cold
weather.

1. Start the engine.

2. Selec t
the Recirculation mode

and

3. Open

the side defroster vents.

4. Set the fan and temperature

controls to maximum.

These settings
direct all the air
flow to the defroster vents at the
base of the windshield and the side
window defroster vents. The air
flow will get warmer and clear the
windows faster as the engine
warms up. You can close the corner
vents with the dial beside each vent.
That will send more warm air to
the side defroster vents.
For safety, make sure you have a
clear view through all the windows
before driving away.
To Turn Everything Off

To shut off the system temporarily,
slide the fan speed and temperature
control levers all the way to the left.
You should only shut the system completely off for the first few
minutes of driving in cold weather,
until the engine coolant warms up
enough to operate the heater. Keep
the fan on at all other times so stale
air does not build up in the interior.
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Maintenance

Regularly maintaining your Honda
is the best way to protect your investment. You will be rewarded
with safer, more economical,
trouble-free driving. This section
lists items that need to be checked
regularly and explains how to check them. It also details some
simple maintenance tasks you can

do yourself. The maintenance

schedules for normal and severe
driving conditions show you when
these things need to be done.
If you are interested in how to per-
form more complex maintenance
on your Honda, you can purchase
the Service Manual. See page 221 for information on how to
obtain a copy, or see your Honda

dealer.
Maintenance Schedule................ 128
Maintenance Record................ 131
Periodic Checks............................ 133
Fluid Locations............................. 134

Engine Oil...................................... 135
Checking Engine Oil................ 135

Adding........................................ 135
Recommended Oil.................... 136

Additives.................................... 136 Oil and Filter Changes ............ 137
Cooling System............................. 139 Checking the Coolant Level... 139
Adding Radiator Coolant........ 139
Replacing Coolant.................... 140
Windshield Washers.................... 143

Transmission Oil.......................... 144
Automatic Transmission........ 144
5-speed Transmission.............. 145

Brake and Clutch Fluid............... 146
Brake System............................ 146
Anti-lock Brake System ......... 147 Clutch System........................... 147
Power Steering............................. 148

Air Filter....................................... 149
Fuel Filter..................................... 150

Spark Plugs.................................. .
150
Replacement.............................. 150
Specification.............................. 152
Battery............................................ 152
Windshield Wipers....................... 155
Air Conditioner............................. 157 Engine Belts.................................. 158
Tires................................................ 158 Inflation...................................... 158
Inspection................................... 159
Maintenance.............................. 160
Tire Rotation............................ 160
Replacing Tires ........................ 161
Wheels and Tires...................... 161
DOT Tire Quality Grading..... 161 Treadwear............................. 161
Traction................................. 162
Temperature......................... 162
Winter Driving.......................... 163 Snow Tires............................ 163
Tire Chains............................ 163
Lights.............................................. 164
Replacing Bulbs........................ 164
Storing Your Car.......................... 173

MaintenanceProCarManuals.comMain Menu s t

Cooling System

Checking the Coolant Level

Check the level of the engine
coolant by looking at the radiator
reserve tank next to the battery. If
the level is at or below the MIN line, add coolant to bring it up to the
MAX line. This coolant should
always be a mixture of 50%
antifreeze and 50% water. Never
add straight antifreeze or plain
water. Always use Genuine Honda Anti-
freeze/Coolant. The cooling system contains many aluminum compo-
nents which can corrode if an
improper antifreeze is used. Some
antifreeze, even though labeled as
safe for aluminum parts, may not
provide adequate protection.
Adding Radiator Coolant

If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.
1. Make sure the engine and radiator are cool.

CONTINUED

Maintenance

RESERVE TANK

MAX
MIN

Removing the radiator cap

while the engine is hot can

cause the coolant to spray out,

seriously scalding you.

Always let the engine and
radiator cool down before
removing the radiator cap.ProCarManuals.comMain Menu Table of Contents s t

Cooling System

2. Turn the radiator cap counter- clockwise, without pressing
down on it, until it stops. This
relieves any pressure remaining
in the cooling system.
3. Remove the radiator cap by pushing down and turning
counterclockwise.
4. The coolant level should be up to
the base of the filler neck. Add
coolant if it is low.
5. Put
the radiator cap back on.
Tighten it fully.
6. Pour coolant into the reserve tank. Fill it to halfway between
the MAX and MIN marks. Put
the cap back on the reserve tank.

Do no t
add any rust inhibitors or
other additives to your car's
cooling system. They may not be
compatible with the coolant or
engine components.

Replacing Coolant

The cooling system should be
completely drained and refilled
with new coolant according to the
time and mileage recommendations in the maintenance schedule. Only
use recommended antifreeze.
Draining the coolant requires
access to the underside of the car.
Unless you have the tools and
knowledge, you should have this
maintenance done by a skilled
mechanic.

Maintenance
RADIATOR CAP
RESERVE TANKProCarManuals.comMain Menu Table of Contents s t

Cooling System

1. Slide the heater temperature control lever to maximum heat.
Open the hood. Make sure the
engine and radiator are cool to

the touch.

2. Remove the radiator cap. 3. Loosen the drain plug on the
bottom of the radiator. The
coolant will drain through the
splash guard. Remove the drain
bolt from the engine block. 4. Remove the reserve tank from
its holder by pulling it straight up.
Drain the coolant, then put the
tank back in its holder.
5. When the coolant stops draining, tighten the drain plug in the
bottom of the radiator. Apply non-hardening sealant to the
drain bolt threads and reinstall
the bolt in the engine block.
Tighten it securely.

Maintenance

DRAIN
PLUG
DRAIN
BOLT RESERVE TANK

HOLDER
RESERVE

TANK CAP

CONTINUEDProCarManuals.comMain Menu Table of Contents s t

Cooling System

6. Mix the recommended antifreeze with an equal amount of purifiedor distilled water in a clean
container. The cooling system
capacity is:

With 5-speed transmission:

(US: S, Canada: S)
3.5
(0.92 US gal, 0.77 Imp gal)

(US: Si, Si 4WS, Canada: SR, SR 4WS)

3.8
(1.00 US gal, 0.84 Imp gal)
With automatic transmission:
(US: S, Canada: S)
3.4
(0.90 US gal, 0.75 Imp gal)

(US: Si, Si 4WS, Canada: SR, SR 4WS)
3.7
(0.98 US gal, 0.81 Imp gal)

7. Pour coolant into the radiator up to the base of the filler neck.
8. Loosen the bleeder bolt on top ofthe engine. Tighten it again
when coolant comes out in asteady stream with no bubbles.
9. Refill the radiator to the base of the filler neck. Put the cap on the
radiator, only tighten it to the
first stop. Start the engine and
let it run until it warms up (the
radiator cooling fan comes on at
least twice).

Maintenance

FILLER NECK
Fill up to here
BLEEDER
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