coolant temperature HONDA PRELUDE 1998 Owners Manual

Gauges
Fuel Gauge

This shows how much fuel you have. It is most accurate when the vehicle
is on level ground. It may showslightly more or less than the actual
amount when you are driving on
curvy or hilly roads. The gauge stays at the same fuel
level reading after you turn off the
ignition. When you add fuel, the
gauge slowly changes to the new
reading after you turn the ignitionswitch back ON (II). Temperature Gauge
This shows the temperature of theengine's coolant. During normaloperation, the pointer should rise
from the bottom white mark to about
the middle of the gauge. In severe driving conditions, such as very hot
weather or a long period of uphill driving, the pointer may rise to near
the upper white mark. If it reaches
the red (Hot) mark, pull safely to the side of the road. Turn to page 238 for
instructions and precautions on checking the engine's cooling

system.

Instruments and Controls

TACHOMETER
SPEEDOMETER
TRIP METER
FUEL GAUGE
TEMPERATURE GAUGE ODOMETER

MAINTENANCE

REQUIRED INDICATOR
TRIP METER
RESET BUTTONProCarManuals.comMain Menu Table of Contents s t

Heating and Cooling

Vent Controls
You can adjust the direction of the
air coming from the dashboard vents

by moving the tab in the center of
each vent up-and-down and side-to-

side.
The vents in the corners of the

dashboard can be opened and closed

with the dials underneath them. How to Use the System
This section covers how to set up the system controls for ventilation,
heating, cooling, dehumidifying, and defrosting.
The engine must be running for the heater and air conditioning to
generate hot and cold air. The heater
uses engine coolant to warm the air.If the engine is cold, it will be several
minutes before you feel warm air
coming from the system.
The air conditioning does not rely on engine temperature.
Comfort and Convenience Features
CENTER VENT


SIDE VENTProCarManuals.comMain Menu Table of Contents s t

Heating and Cooling

If the interior is very warm from
being parked in the sun, you can cool it down more rapidly by setting up
the controls this way:
1. Start the engine.
2. Turn on the A/C by pressing the button. Make sure the tempera-
ture control lever is all the way to
the left.
3. Set the fan to maximum speed.
4. Open the windows partially. Select and Fresh Air mode.
When the interior has cooled down to a more comfortable temperature,close the windows and set the
controls as described for normal
cooling. Air conditioning places an extra load
on the engine. Watch the engine
coolant temperature gauge (see page 57) when driving in stop-and-go
traffic or climbing a long, steep hill. If it moves near the red zone, turnoff the A/C until the gauge reads
normally.

To Heat

To warm the interior: 1. Start the engine. 2. Select and Fresh Air mode.
3. Set the fan to the desired speed.
4. Adjust the warmth of the air with
the temperature control lever.
To Heat and Dehumidify with Air

Conditioning

Air conditioning, as it cools, removes moisture from the air. When used in
combination with the heater, itmakes the interior warm and dry.
1. Switch the fan on.
2. Turn on the air conditioning. 3. Select and Fresh Air mode.
4. Adjust the temperature control
lever so the mixture of heated and
cooled air feels comfortable.
This setting is suitable for all driving conditions whenever the outside
temperature is above 32°F (0°C).

CONTINUED

Comfort and Convenience FeaturesProCarManuals.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

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

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

If Your Engine Overheats

6. Look for any obvious coolant leaks, such as a split radiator hose.
Everything is still extremely hot, so use caution. If you find a leak, it
must be repaired before you continue driving (see Towing on
page 250).
7. If you don't find an obvious leak, check the coolant level in the
radiator reserve tank (see page 124). If the level is below the
MIN mark, add coolant to halfway
between the MIN and MAX marks.
8. If there was no coolant in the reserve tank, you may also have to
add coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the tempera-
ture gauge, or lower, before check-
ing the radiator. 9. Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushingdown, to the first stop. This
releases any remaining pressure in
the cooling system. After the pressure releases, push down on
the cap and turn it until it comesoff. 10. Start the engine and set the
temperature control lever to
maximum. Add coolant to the
radiator up to the base of the filler
neck. If you do not have the
proper coolant mixture available,
you can add plain water.
Remember to have the cooling
system drained and refilled with
the proper mixture as soon as you

can.

11. Put the radiator cap back on tightly. Run the engine and watch
the temperature gauge. If it goes
back to the red mark, the engine
needs repair. (See Towing on
page 250.)
12. If the temperature stays normal, check the coolant level in the
radiator reserve tank. If it has
gone down, add coolant to the
MAX mark. Put the cap back on

tightly.

Taking Care of the Unexpected

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

Index

Cleaning
Aluminum Wheels..................... 221Carpeting.................................... 222
Exterior....................................... 220
Fabric.......................................... 222
Interior........................................ 222
Seat Belts....................................223
Vinyl............................................ 222
Windows..................................... 223
Clock, Setting the ............................ 85
Clutch Fluid.................................... 186
Coin Box........................................... 88
CO in the Exhaust......................... 261
Cold Weather, Starting in............. 133
Compact Spare............................... 228
Consumer Information*................ 266
Controls, Instruments and.............. 49
Coolant
Adding......................................... 177
Checking..................................... 124

Proper Solution.......................... 177

Replacing.................................... 179

Temperature Gauge.................... 57
Corrosion Protection..................... 224

Courtesy Lights............................... 90
Crankcase Emission Control

System......................................... 261

Cruise Control Operation............... 65

Customer Relations Office........... 266

DANGER, Explanation of................. ii
Dashboard........................................ 50
Daytime Running Lights................. 60
Dead Battery, What to Do............ 236
Defects, Reporting Safety............. 270
Defog and Defrost........................... 98
Defogger, Rear Window................. 63
DEXRON ®
III Automatic
Transmission Fluid.................... 183
Dimensions..................................... 254
Dimming the Headlights ................ 60
Dipstick Automatic Transmission........... 183
Engine Oil................................... 123
Directional Signals........................... 61
Disabled, Towing Your Car If...... 250
Disc Brake Wear Indicators......... 145
Disposal of Used Oil...................... 176 Doors
Locking and Unlocking............... 72
Power Door Locks....................... 72
DOT Tire Quality Grading........... 257
Downshifting, 5-speed Manual Transmission.............................. 134
Drive Belts...................................... 190
Driving............................................ 131
Economy..................................... 125
In Bad Weather.......................... 150
In Foreign Countries................. 260
Economy, Fuel............................... 125
Emergencies on the Road............. 227 Battery, Jump Starting.............. 236
Brake System Indicator............ 243Changing a Flat Tire................. 229
Charging System Indicator ...... 241
Checking the Fuses................... 245
Low Oil Pressure Indicator...... 240
Malfunction Indicator Lamp.... 242
Manually Closing Moonroof.... 243
Overheated Engine................... 238 CONTINUEDProCarManuals.comMain Menu s t

Index

Emergency Brake............................ 84
Emergency Flashers....................... 63
Emission Controls......................... 261

Engine

Coolant Temperature Gauge ..... 57
Malfunction Indicator Lamp................................. 53, 242
Oil Pressure Indicator......... 53, 240
Oil, What Kind to Use............... 173
Overheating................................ 238
Specifications............................. 254
Ethanol in Gasoline ....................... 259
Evaporative Emission Controls.... 261
Exhaust Fumes................................ 47
Expectant Mothers, Use of Seat Belts by.........................................17
Exterior, Cleaning the................... 220
Fabric, Cleaning............................. 222

Fan, Interior...................................... 92

Features, Comfort and Convenience................................. 91
Filling the Fuel Tank..................... 121 Filters

Air................................................187

Oil................................................175

First Gear, Shifting........................ 142 5-speed Manual Transmission Checking Fluid Level................ 184
Shifting the................................. 134
Flashers, Hazard Warning.............. 63
Flat Tire, Changing a.................... 229
Fluids Automatic Transmission........... 183
Brake...........................................185
Clutch..........................................186

Manual Transmission............... 184
Power Steering........................... 186

Windshield Washer................... 182

FM Stereo Radio
Reception.................................... 105

Folding Rear Seat............................ 79

Foreign Countries, Driving in...... 260 Four-way Flashers........................... 63

Front End, Towing by
Emergency Wrecker................. 250

Fuel..................................................120

Fill Door and Cap....................... 121
Gauge............................................ 57
Octane Requirement................. 120

Oxygenated................................ 259

Reserve Indicator......................... 55
Tank, Filling the......................... 121

Fuses, Checking the...................... 245

Gas Mileage, Improving................ 125
Gasohol........................................... 259
Gasoline.......................................... 120 Fuel Reserve Indicator................ 55
Gauge............................................ 57Octane Requirement................. 120
Tank, Filling the......................... 121
Gas Station Procedures................. 121

Gauges
Engine Coolant Temperature .... 57

Fuel................................................57

Gearshift Lever Positions Automatic Transmission........... 137

5-speed Manual
Transmission.......................... 134
Glass Cleaning............................... 223
Glove Box......................................... 74ProCarManuals.comMain Menu s t