1990 HONDA PRELUDE maintenance

Maintenance Schedule and Records (cont'd)

Cheek oil and coolant level at each fuel stop,
Under severe driving conditions, service these items twice as often. (See page 80 )ProCarManuals.comMain Menu t s

Required Maintenance Record

Have your servicing dealer record all Required Maintenance below.

Keep receipts for all work done on your car.

(cont'd)ProCarManuals.comMain Menu t s

Maintenance Schedule and Records (cont'd)
Severe Driving Conditions
CAUTION:
The following items must be serviced more frequently on cars
normally used under severe driving conditions. Refer to the chart
below for the appropriate maintenance intervals. Severe driving conditions include:
A: Repeated short distance driving
B: Driving in dusty conditions
C: Driving in severe cold weather
D: Driving in areas using road salt or other corrosive materials
E: Driving on rough and/or muddy roads

F: Towing a trailer

R-Replace
I-Inspect
After inspection, clean, adjust, repair or replace if necessary.
Non-Scheduled Maintenance Record
Record additional maintenance for severe driving conditions or non-
scheduled maintenance on this page. (See page 78)ProCarManuals.comMain Menu t s

Transmission Oil/Fluid Check
Transmission oil/fluid must be checked with the engine off and the
car on level ground.
If the engine has been running, some engine components may
be hot enough to burn you. Keep hands away from the radiator fan. The fan may start
automatically without warning and run for up to 15 minutes,
even after the engine is turned off.

CAUTION:

If the oil/fluid level is low, check for possible leaks before adding
oil. Do not overfill.
Since the transmission and differential are in the same housing, you
are actually checking both oil/fluid levels in one procedure. Change
transmission oil/fluid according to the Maintenance Schedule on
page 78 .

5-Speed

Remove the oil filler bolt (beside the right axle). Feel inside the boh
hole with your finger. If the oil is up to the bottom edge of the hole,
the oil level is correct. If it is not, slowly add oil until it runs out of
the hole, then reinstall the bolt and tighten it securely with a wrench.
CORRECT
LEVEL

5-SPEED TRANSMISSION

OIL CHANGE CAPACITY: 2.1 l (2.2 US qt, 1.8 Imp qt)
Use only SE or SF grade motor oil when adding or changing
transmission oil. OIL CHECK
FILLER BOLTProCarManuals.comMain Menu t s

If the level is between the MIN and MAX marks on the dipstick
add a 50/50 solution of antifreeze and water to bring it up to MAX. If there is no coolant visible on the dipstick, the cooling system
should be checked for leaks and repaired if necessary. Coolantmust then be added to the radiator.

CAUTION:

Radiator coolant will damage paint. Quickly rinse any spilled

coolant from painted surfaces.

Wait until the engine is cool, then turn the radiator cap counterclock-wise until it stops. DO NOT PRESS DOWN WHILE TURNING THECAP. After any remaining pressure has been relieved, remove the
cap by pressing down and again turning it counterclockwise. Add
enough coolant to fill the radiator, and reinstall the cap. Be sure to
tighten it securely. Fill the reserve tank up to the MAX mark with
the engine cold.

Maintenance
1. Check the freeze protection level of the coolant with a hydrometer.
2. Keep the front of the radiator free of dirt and debris.

3. Check hoses and hose clamps regularly.

(cont'd)
MAX
MIN
RESERVE TANKProCarManuals.comMain Menu t s

Brakes

Brake System Design
The diagonally-separated dual service brake systemis designed so half the
system will still provide
braking action if the other
half fails.However, stopping the car with only half the system will require
more pedal pressure and pedal travel than normal. Also, the distance
required to stop will be longer using only half the brake system. If
the brakes fail suddenly, downshift to a lower gear for increased engine braking, and pull off the road as soon as possible.
It is dangerous to drive your car with a problem in either the
brake electrical or hydraulic system; have your dealer check
both systems if you suspect brake trouble. Do not ride the brakes, In other words, don't put your foot on
the brake pedal unless you intend to brake. This causes excessive brake wear and can damage, or lead to loss of braking
effectiveness through overheating. Your brake lights may also
confuse drivers behind you.Driving through deep water may affect the brakes.
Check their effectiveness by pressing the brake pedal gently.If the car does not slow down at the normal rate, continue
gently applying the brakes, while maintaining a safe speed, until
they dry out and normal performance returns.
Brake Wear
Both front and rear brakes should be inspected for wear at the
intervals shown in the maintenance schedule on page 78
When the brakes require maintenance, use only genuine Honda replacement parts or their equivalent.
Brake Wear Indicators
Your car is equipped with audible brake wear indicators. When the
brake pads need to be replaced, the wear indicators will make a "screeching" sound or a high pitch chirp.

NOTE:

Due to some driving habits or climates, brakes may "squeal" when
you first apply them or when you have them partially applied; this is normal, and does not indicate excessive wear. The wear indicator
makes a "screeching" sound while the brakes are applied.ProCarManuals.comMain Menu t s

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

compressor.ProCarManuals.comMain Menu t s

Emission Controls
Sources of Emissions
The combustion process produces carbon monoxide, oxides of nitrogen and hydrocarbons. The evaporation of fuel in the fuel tank
also produces hydrocarbons. Control of oxides of nitrogen and
hydrocarbons is very important since, under certain conditions,
when subjected to sunlight, they react to form photochemical smog. Carbon monoxide does not react to form smog, but it is toxic.
Honda Motor Co., Ltd. has developed a number of systems which
are highly effective in reducing carbon monoxide, oxides of nitrogen
and hydrocarbons.
The Clean Air Act
The Clean Air Act requires all vehicle manufacturers to explain in writing, the operation and maintenance of their emission control

systems.
Maintenance instructions are included on pages 76—81 ; the
operation of each system is explained on the following.

Replacement Parts

The emission control systems on your new Honda were designed, built and certified to conform with the Federal regulations
implementing the Clean Air Act. Honda recommends only the use of
new, genuine Honda parts or their equivalent. The use of other
replacement parts which are not of equivalent quality may impair
the effectiveness of your car's emission control systems.

Crankcase Emission Control System

To prevent crankcase emissions, your car is equipped with a Positive Crankcase Ventilation (PCV) System which routes blowby
gases from the crankcase, through the PCV valve and intake manifold, into the combustion chamber.ProCarManuals.comMain Menu t s