cooling HONDA PRELUDE 1998 User Guide

Heating and Cooling

To Defog and Defrost

To remove fog from the inside of the
windows:

1. Switch the fan on.
2. Select

When you select the
system automatically switches to
Fresh Air mode and turns on the
A/C.
3. Adjust the temperature control lever so the air flow from thedefroster vents feels warm.
4. Turn on the rear window defogger to help clear the rear window.
When you switch to another mode from the A/C stays on.
Press the A/C button to turn if off.
Comfort and Convenience Features MODE BUTTONS


REAR WINDOW
DEFOGGER BUTTON RECIRCULATION
BUTTON

AIR CONDITIONING
BUTTON

FAN CONTROL

LEVER

TEMPERATURE
CONTROL LEVERProCarManuals.comMain Menu Table of Contents s t

Heating and Cooling

To remove exterior frost or ice from the windshield and side windowsafter the vehicle has been sitting out
in cold weather:
1. Start the engine.
2. Select

When you select the
system automatically switches to
Fresh Air mode and turns on the
A/C.
3. Switch the fan and temperature controls to maximum.
To rapidly remove exterior frost or ice from the windshield (on very colddays), first select the Recirculation
mode. Once the windshield is clear, select the Fresh Air mode to avoid
fogging the windows. These settings direct all the air flow
to the defroster vents at the base of
the windshield and the side windowdefroster vents. The air flow will get
warmer and clear the windows faster as the engine warms up. You can
close the side vents with the dial
underneath each vent. This will send
more warm air to the windshield 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 shut the system completely off only 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.

Comfort and Convenience FeaturesProCarManuals.comMain Menu Table of Contents s t

Maintenance

This section explains why it is important to keep your vehicle wellmaintained and to follow basic
maintenance safety precautions.
This section also includes Maintenance Schedules for normaldriving and severe driving conditions,
a Maintenance Record, and instruc-
tions for simple maintenance tasks
you may want to take care of
yourself.
If you have the skills and tools to per-
form more complex maintenance
tasks on your Honda, you may want to purchase the Service Manual. See
page 271 for information on how toobtain a copy, or see your Honda

dealer.
Maintenance Safety....................... 160
Important Safety Precautions ..161
Maintenance Schedule.................. 162
Required Maintenance Record.... 169 Owner Maintenance Checks........ 171
Fluid Locations............................... 172
Engine Oil.......................................173

Adding Oil................................... 173Recommended Oil..................... 173Synthetic Oil............................... 174

Additives..................................... 174
Changing the Oil and Filter...... 175
Cooling System.............................. 177
Adding Engine Coolant............. 177Replacing Engine Coolant........ 179
Windshield Washers..................... 182
Transmission Fluid........................ 183 AutomaticTransmission.......................... 183
5-speed Manual Transmission.......................... 184
Brake and Clutch Fluid................. 185 Brake System............................. 185
Clutch System............................ 186
Power Steering............................... 186
Air Cleaner Element...................... 187 Spark Plugs..................................... 188
Replacement............................... 188
Specifications............................. 190
Battery............................................ 190
Wiper Blades.................................. 193
Air Conditioning System............... 195 Drive Belts...................................... 196
Timing Belt..................................... 196

Tires................................................ 197
Inflation....................................... 197

Inspection................................... 198

Maintenance............................... 199

Tire Rotation.............................. 200 Replacing Tires and Wheels .... 200
Wheels and Tires....................... 201

Winter Driving...........................201
Snow Tires.............................. 202

Tire Chains............................. 202

Lights.............................................. 203

Headlight Aimimg..................... 205

Replacing Bulbs......................... 206

Storing Your Vehicle..................... 217

MaintenanceProCarManuals.comMain Menu s t

Cooling System

Adding Engine Coolant
If the coolant level in the reserve
tank is at or below the MIN line, add coolant to bring it up to the MAX line.
Inspect the cooling system for leaks.
This coolant should always be a mixture of 50 percent antifreeze and50 percent water. Never add straight
antifreeze or plain water. Always use Genuine Honda
antifreeze/coolant. If it is not
available, you may use anothermajor-brand non-silicate coolant as a
temporary replacement. Make sure it
is a high-quality coolant recommended for aluminum engines.
However, continued use of any non-
Honda coolant can result in
corrosion, causing the cooling system to malfunction or fail. Have
the cooling system flushed and refilled with Honda antifreeze/
coolant as soon as possible. If the reserve tank is completely
empty, you should also check the
coolant level in the radiator.

CONTINUED

Maintenance

RESERVE TANK

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
1. Make sure the engine and radiator are cool.
2. Turn the radiator cap counter- clockwise, without pressing downon 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. Addcoolant 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.
Maintenance RADIATOR CAP
RESERVE TANKProCarManuals.comMain Menu Table of Contents s t

Cooling System

Do not add any rust inhibitors or
other additives to your vehicle's
cooling system. They may not be
compatible with the coolant or engine components.
Replacing Engine Coolant
The cooling system should be completely drained and refilled with
new coolant according to the time
and distance recommendations in
the maintenance schedule. Only useGenuine Honda antifreeze/coolant.
Draining the coolant requires access
to the underside of the vehicle. Unless you have the tools and
knowledge, you should have this maintenance done by a skilled
mechanic. 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. Thecoolant will come out through the
hole in the splash cover.

CONTINUED

Maintenance
DRAIN PLUG
Type SHProCarManuals.comMain Menu Table of Contents s t

Cooling System

Except Type SH only

Remove the drain bolt and washer
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.
Except Type SH only

Apply non-hardening sealant to the drain bolt threads, put a new washer
on the drain bolt, and reinstall the
bolt in the engine block. Tighten it

securely.

Tightening torque:
61 Ibf .
ft (83 N .
m , 8.5 kgf .
m)

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

With 5-speed manual transmission:

(Except Type SH)
0.87 US gal (3.3 l , 0.73 Imp gal)
(TypeSH)
0.85 US gal (3.2 l ,0.70 Imp gal)

With automatic transmission:

0.85 US gal (3.2 l , 0.70 Imp gal)

Maintenance
DRAIN BOLT

Except

Type SH
DRAIN PLUG

HOLDERRESERVE

TANK CAP
RESERVE TANK
ProCarManuals.comMain Menu Table of Contents s t

Cooling System

7. Pour coolant into the radiator up to the base of the filler neck. 8. Loosen the bleeder bolt on top of
the engine. Tighten it again whencoolant comes out in a steady
stream with no bubbles.
9. Refill the radiator to the base of the filler neck. Start the engineand let it run until it warms up (the
radiator cooling fan comes on at
least twice). 10. Turn off the engine. Check the
level in the radiator, add coolant if
needed. Install the radiator cap,
and tighten it fully.
11. Fill the reserve tank to the MAX mark. Install the reserve tank cap.

Maintenance

FILLER NECK
RESERVE TANK
BLEEDER BOLT
Fill up to hereProCarManuals.comMain Menu Table of Contents s t

Air Conditioning System
Your vehicle's air conditioning is a sealed system. Any major mainte-
nance, such as recharging, should be
done by a qualified mechanic. You
can do a couple of things to make
sure the air conditioning works
efficiently. Periodically check the engine's
radiator and air conditioning
condenser for leaves, insects, and
dirt stuck to the front surface. These
block the air flow and reduce cooling
efficiency. Use a light spray from a
hose or a soft brush to remove them.

The condenser and radiator fins bend
easily. Only use a low-pressure spray
or soft-bristle brush to clean them.

Run the air conditioning at least once
a week during the cold weather
months. Run it for at least ten
minutes while you are driving at a steady speed with the engine at
normal operating temperature. This
circulates the lubricating oil con-
tained in the refrigerant. If the air conditioning does not get as
cold as before, have your dealer
check the system. Recharge the system with Refrigerant HFC-134a (R-134a). (See Specifications on page 255.)

Whenever you have the air conditioning

system serviced, make sure the service

facility uses a refrigerant recycling
system. This system captures the
refrigerant for reuse. Releasing
refrigerant into the atmosphere can

damage the environment.

Maintenance

AIR CONDITIONING CONDENSER

NOTICENOTICEProCarManuals.comMain Menu Table of Contents s t

If Your Engine Overheats

The pointer of your vehicle's temperature gauge should stay in
the midrange under most conditions.It may go higher if you are driving up
a long steep hill on a very hot day. If
it climbs to the red mark, you shoulddetermine the reason.
Driving with the temperature gauge
pointer at the red mark can cause serious damage to your engine. Your vehicle can overheat for several
reasons, such as lack of coolant or a
mechanical problem. The only
indication may be the temperature
gauge climbing to or above the red
mark. Or you may see steam orspray coming from under the hood.
In either case, you should take
immediate action.
1. Safely pull to the side of the road. Put the transmission in Neutral or
Park and set the parking brake.
Turn off the heating and cooling system and all other accessories.
Turn on the hazard warning indicators. 2. If you see steam and/or spray
coming from under the hood, turnoff the engine.
3. If you do not see steam or spray, leave the engine running and
watch the temperature gauge. If
the high heat is due to overloading(climbing a long, steep hill on a
hot day with the A/C running, for example), the engine should start
to cool down almost immediately. If it does, wait until the tempera-
ture gauge comes down to the mid-
point then continue driving.
4. If the temperature gauge stays at the red mark, turn off the engine.
5. Wait until you see no more signs of steam or spray, then open the
hood.
Taking Care of the Unexpected

NOTICE

Steam and spray from an
overheated engine can
seriously scald you.Do not open the hood if steam

is coming out.ProCarManuals.comMain Menu Table of Contents s t