1990 HONDA PRELUDE cooling

Cooling System (cont'd)
Thermostat The thermostat in the cooling system does not need to be changedfor summer or winter operation. However, for extremely cold
climates, an optional thermostat is available from your Honda dealer.
Replacing CoolantReplace coolant at 36 months or 45,000 miles (72,000 km),
whichever comes first. Thereafter, replace every 2 years or 30,000
miles (48,000 km), whichever comes first.
RADIATOR COOLANT
REFILL CAPACITY:
including reserve tank 0.75 l (0.198 US gal, 0.165 Imp gal)

Manual transmission 2.0 S: 5.15 l (1.361 US gal, 1.133 Imp gal)
2.0 Si,Si: 6.15 l (1.625 US gal, 1.353 Imp gal)

Automatic transmission 2.0S:5.85 l (1.546 US gal, 1.287 Imp gal)

2.0 Si,Si: 6.15 l (1.625 US gal, 1.353 Imp gal)

1. Set the heater temperature lever to maximum heat.
2. Remove the radiator cap and loosen the drain plug when the radiator is cool, and drain the radiator.
RADIATOR
CAP BLEED BOLT
DRAIN BOLT
3. Remove the drain bolt from the front side of the cylinder block, and drain the engine and heater.
4. Apply non-hardening sealant to the drain bolt threads, then reinstall the bolt and tighten it securely.
5. Tighten the radiator drain plug securely.
DRAIN

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Air Conditioner Care
Condenser and Radiator
Check the engine radiator and the air conditioner condenser (in front
of the radiator) for accumulated dirt, insects or leaves. Carefully brush or hose them off to assure maximum cooling performance.

CAUTION:

Radiator and condenser fins are very thin and easily damaged; do
not bend them with the high water pressure or brush.
Compressor Drive Belt Check the compressor bett tension monthly, during periods when
you use the air conditioner a lot.
If the engine has been running, some engine components may be
hot enough to burn you.
When pushed with 98 N (22 Ib) of force midway between the
compressor drive pulley and the engine crankshaft pulley, the beltshould deflect about: 10-12 mm (0.4—0.5 in)
ADJUSTER COMPRESSOR DRIVE
PULLEY
CRANKSHAFT
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System Maintenance
Run your air conditioner at least once a week for about ten minutes,
even during the off season, to lubricate the seals and the inside of

the compressor and, to verify that the system is functional.

If the air conditioner is not cooling properly, it may indicate an
undercharged system. Have your dealer check the system for leaks,
then evacuate and charge the system with refrigerant 12. Charging quantity:

850-950 g(30.1-33.6 oz)

CAUTION:

Prolonged use of an undercharged system may damage the

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Index
(cont'd)
Air Conditioner

Operation.....................................
43

Service.......................................108

Air Filte
r ...........................................95
Air Pressure, Tires........................105
Aluminum Alloy Wheels...............111
Antifreeze ..................See
"Radiator coolant"
Anti Lock Brakes(ALB) ..................18 ALB Warning Light .....................
24

ALB Fluid
.....................................
99
Anti-theft Steering

Column Lock

System.........................................58

Appearance Care .........................
110

Ashtrays..........................................38
Audio System
.................................
47
Automatic Transmission

Driving Technique ......................68

Fluid.............................................87
Operation....................................67

Shift Lever

Position
Indicator .................................
21 Battery
Charging System Warning

Light.......................................23

Jump Starting ...........................119 Maintenance .............................100

Specification ........................... 126

Beeper System Fasten Seat Belt Beeper ............13
Key Reminder .............................58

Light Reminder Chime ................30

Belts,Seat...............See "Seat Belts"
Brake Lamp Warning Light.............25
Brakes Brake Failure Warning Light .......................................23
Brake Fluid...................................99
Brake System Design .................98
Brake Wear .................................98
Brake Wear Indicators................98

Parking Brake ..............................39

Parking Brake Warning Light .......................................23
Break-in Period ..................................2

Bulb

Replacement.............................103
Specification .............................126
Buzzer ............See "Beeper System"
Capacities......................................125

Care and Cleaning.........................110

Catalytic Converter .....................134
Certification Label ........................127

Chains,Tires ................................. 106

Child Restraint System ..................14
Cigarette Lighter .............................38

Clock................................................37

COMPACT Spare Tire .................114Coolant Temperature Gauge .........20
Cooling(with A/C) ...........................44 Cooling System ...............................88
Crankcase Emission ControlSystem ..........................................
130
Cruise Control
Opeartion...................................
35Indicator .....................................22
Defogger.........................................28
Defroster .........................................45

Dimmer Switch, Headlights...........31
Doors
Locks............................................3

Warning Light ............................25
Emergency
Changing Flat Tire ...................116

Hazard Warning System ..........33If the Retractable Headlights do not operate ...................123

If the Sunroof Won't
Close .....................................54
If Your Car Gets Stuck ...........122
Jump Starting .........................119Towing.....................................121Warning and
Indicator

Lights....................................21
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