engine HONDA PRELUDE 2000 (in English) Repair Manual

If You r Engin e Won' t Start , Jum p Startin g
The Starte r Operate s Normall y
In this case, the starter motor's speed sounds normal, or even faster
than normal, when yon turn the
ignition switch to START (III), but
the engine does not run.
Are you using the proper starting procedure? Refer to Startin g th e
Engin e on page 141.
Do you have fuel? Turn the
ignition switch to ON (II) for a
minute and watch the fuel gauge.
The low fuel level warning light may not be working, so you werenot reminded to fill the tank.
There may be an electrical problem, such as no power to the
fuel pump. Check all the fuses
(see page 254).
If you find nothing wrong, you will
need a qualified technician to find
the problem. See Emergenc y
Towin g on page 258 . Jum
p Startin g
If your car's battery has run down,
you may be able to start the engine by using a booster battery. Although
this seems like a simple procedure,
you should take several precautions.
You cannot start a Honda with an automatic transmission by pushing
or pulling it. To jump start your car, follow these
directions closely:
1. Open the hood and check the physical condition of the battery(see page 198). In very cold
weather, check the condition of the electrolyte. If it seems slushyor like ice, do not try jump starting
until it thaws.
If a battery sits in extreme cold, the
electrolyte inside can freeze.
Attempting to jump start with a frozen
battery can cause it to rupture.
2. Turn off all the electrical acces-
sories: heater, A/C, stereo system,
lights, etc.
Put the transmission in Neutral or
Park and set the parking brake.
Takin g Car e o f th e Unexpecte d
A battery can explode if you do
not follow the correct procedure,
seriously injuring anyone nearby.
Keep all sparks, open flames,
and smoking materials away
from the battery.
NOTIC E

Jum
p Startin g

3. Connect one jumper cable to the positive ( + ) terminal on the
booster battery. Connect the other end to the positive ( + ) terminal
on your Honda's battery. 4. Connect the second jumper cable
to the negative ( — ) terminal on
the booster battery. Connect theother end to the grounding strap
as shown. Do not connect this
jumper cable to any other part of the engine.
5. If the booster battery is in another vehicle, have an assistant startthat vehicle and run it at a fast idle. 6. Start your car. If the starter motor
still operates slowly, check the
jumper cable connections to make sure they have good metal-to-
metal contact.
7. Once your car is running, discon- nect the negative cable from your
car, then from the booster battery.
Disconnect the positive cable from
your car, then the booster battery.
Takin g Car e o f th e Unexpecte d

BOOSTE
R BATTER Y

If You r Engin e Overheat s
The pointer of your car's tempera-
ture gauge should stay in the mid-
range under most conditions. It may
go higher if you are driving up a longsteep hill on a very hot day. If it
climbs to the red mark, you should determine the reason.
Driving with the temperature gauge
pointer at the red mark can cause serious damage to your engine.
Your car can overheat for severalreasons, 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, turn
off the engine.
3. If you do not see steam or spray, leave the engine running and
watch the temperature gauge. Ifthe high heat is due to overloading (climbing a long, steep hill on a
hot clay 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.
Takin g Car e o f th e Unexpecte d
NOTICE
Steam and spray from an
overheated engine can
seriously scald you.
Do not open the hood if steam
is coming out.

I
f You r Engin e Overheat s

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 Emergenc y
Towin g on page 258).
7. If you don't find an obvious leak, check the coolant level in the
radiator reserve tank (see page131). 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 toadd 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 pushing
down, 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 comes off. 10. Start the engine and set the
temperature control lever tomaximum. 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 coolingsystem drained and refilled with
the proper mixture as soon as you
can.

11. Put the radiator cap back on tightly. Run the engine and watchthe temperature gauge. If it goes
back to the red mark, the engine
needs repair. (See Emergenc y
Towin g on page 258.)
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.

Takin g Car e o f th e Unexpecte d

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.

Lo
w Oi l Pressur e Indicato r
LO W OI L PRESSUR E INDICATO R

This indicator should light when the ignition switch is ON (II), and go out
after the engine starts. It shouldnever come on when the engine is
running. If it starts flashing, it
indicates that the oil pressure dropped very low for a moment, then
recovered. If the indicator stays on
with the engine running, it shows
that the engine has lost oil pressure
and serious engine damage is
possible. In either case, you should
take immediate action.
Running the engine with low oil
pressure can cause serious mechanical damage almost immediately. Turn offthe engine as soon as yon can safely get
the car stopped.

1. Safely pull off the road and shut off the engine. Turn on the hazard
warning indicators.
2. Let the car sit for a minute. Open the hood and check the oil level(see page 130). Although oil level
and oil pressure are not directly connected, an engine that is very
low on oil can lose pressure during cornering and other driving

maneuvers.

3. If necessary, add oil to bring the level back to the full mark on thedipstick (see page 181). 4. Start the engine and watch the oil
pressure indicator. If the lightdoes not go out within ten seconds,
turn off the engine. There is a mechanical problem that needs to
be repaired before you can continue driving. (See Emergenc y
Towin g on page 258.)

Takin g Car e o f th e Unexpecte d NOTIC
E

Chargin
g Syste m Indicato r

This indicator should come on when the ignition switch is ON (II), and go
out after the engine starts. If it
comes on brightly when the engine
is running, it indicates that the
charging system has stopped charging the battery. Immediately turn off all electrical
accessories: radio, heater, A/C, rear
clefogger, cruise control, etc. Try not
to use other electrically-operated controls such as the power windows.
Keep the engine running and take
extra care not to stall it. Starting the
engine will discharge the battery
rapidly. By eliminating as much of the
electrical load as possible, you can
drive several miles (kilometers)
before the battery is too discharged
to keep the engine running. Drive to a service station or garage where
you can get technical assistance.
Takin g Car e o f th e Unexpecte d
CHARGIN
G SYSTE M INDICATO R

Malfunctio
n Indicato r Lam p

This indicator comes on for a few seconds when you turn the ignition
switch ON (II). If it comes on at any
other time, it indicates one of the
engine's emissions control systems
may have a problem. Even though
you may feel no difference in your car's performance, it can reduce
your fuel economy and cause your car to put out excessive emissions.
Continued operation may cause
serious damage.
If you have recently refueled your
car, the cause of this indicator
coming on could be a loose or
missing fuel fill cap. Check the cap
and tighten it until it clicks several
times. Replace the fuel fill cap if it is
missing. Tightening the cap will not
make the indicator turn off
immediately; it takes three driving

trips.

If the indicator remains on past three
driving trips, or the fuel cap was not
loose or missing, have the car
checked by the dealer as soon as
possible. Drive moderately until the dealer has inspected the problem.
Avoid full-throttle acceleration and driving at high speed.
You should also have the dealer inspect your car if this indicator
comes on repeatedly, even though it
may turn off as you continue driving. If you keep driving with the
malfunction indicator lamp on, you can
damage your car's emissions controls and engine. Those repairs may not be
covered by your car's warranties.

Takin g Car e o f th e Unexpecte d
MALFUNCTIO
N INDICATO R LAM P NOTIC
E

Brak
e Syste m Indicato r

The Brake System indicator light comes on when you turn the ignitionON (II). If the parking brake is not
set, it goes off after you start the
engine. If the parking brake is set, it
goes off when you fully release the
parking brake with the engine running.
If it comes on at any other time, it
indicates a problem with the car's
brake system. In most cases, the
problem is a low fluid level in the brake fluid reservoir. Press lightly on
the brake pedal to see if it feels
normal. If it does, check the brake
fluid level the next time you stop at a service station (see page 193 ). If the
fluid level is low, take the car to your dealer and have the brake system
inspected for leaks or worn brake

pads.

However, if the brake pedal does not
feel normal, you should take
immediate action. Because of the
brake system's dual-circuit design, a
problem in one part of the system
will still give you braking at two wheels. You will feel the brake pedal
go down much farther before the car
begins to slow down, and you will
have to press harder on the pedal.
The distance needed to stop will be much longer.
Slow down by shifting to a lower
gear, and pull to the side of the road
when it is safe. Because of the longer distance needed to stop, it is
hazardous to drive the car. Youshould have it towed, and repaired as
soon as possible. (See Emergenc y
Towin g on page 258.)
If you must drive the car a short distance in this condition, drive
slowly and cautiously.
Takin g Car e o f th e Unexpecte d

BRAK
E SYSTE M INDICATO R

Fuse
s

All the electrical circuits in your car have fuses to protect them from ashort circuit or overload. These
fuses are located in two fuse boxes.
The under-hood fuse box is locatedin the back of the engine compart-ment on the passenger's side. Toopen it, push the tab as shown. The interior fuse box is underneath
the dashboard on the driver's side.
To open it, turn the knob as shown.
Takin g Car e o f th e Unexpecte d
UNDER-HOO
D
TA
B

INTERIO R

KNOB

Emergency Towin g
If your car needs to be towed, call a
professional towing service or, if you belong to one, an organization that
provides roadside assistance. Never
tow your car behind another vehicle
with just a rope or chain. It is very
dangerous.
There are three popular methods of
towing a vehicle:
Flat-bed Equipment — The operator
loads your car on the back of a truck.
Thi s i s th e bes t wa y t o transpor t
you r Honda .
Wheel-Lift Equipment — The tow
truck uses two pivoting arms that go
under the tires (front or rear) and lift
them off the ground. The other two
tires remain on the ground. Thi s is
a n acceptabl e wa y t o to w you r
Honda .
Sling-type Equipment — The tow
truck uses metal cables with hooks
on the ends. These hooks go around
parts of the frame or suspension and
the cables lift that end of the car off
the ground. Your car's suspension and body can be seriously damaged.
Thi s metho d o f towin g is
unacceptable .
If your Honda cannot be transported
by flat-bed, it should be towed by
wheel-lift equipment with the front
wheels off the ground. If, due to damage, your car must be towed
with the front wheels on the ground, do the following:
5-speed Manual Transmission
Release the parking brake.
Shift the transmission to Neutral.
Automatic Transmission:
Release the parking brake.
Start the engine.
Shift to D4, then to N.
Turn off the engine.
Improper towing preparation will
damage the transmission. Follow the
above procedure exactly If you cannot
shift the transmission or start theengine (automatic transmission), your
car must be transported with the frontwheels off the ground.
With the front wheels on the ground, it is best to tow the car no farther
than 50 miles (80 km), and keep thespeed below 35 mph (55 km/h).
Takin g Car e o f th e Unexpecte d
NOTICE