engine TOYOTA TACOMA 1997 Workshop Manual

Part 4If your vehicle will not startÐ
(a) Simple checks
139
IN CASE OF AN EMERGENCY
If your vehicle will not start
If your engine stalls while driving
If your vehicle overheats
If you have a flat tire
If your vehicle needs to be towed
If you cannot shift automatic
transmission selector lever
If you lose your keys
Before making these checks, make sure
you have followed the correct starting pro-
cedure given in How to start the engineº
in Part 3 and that you have sufficient fuel.
If the engine is not turning over or is
turning over too slowlyÐ
1. Check that the battery terminals are
tight and clean.
2. If the battery terminals are O.K., switch on the interior light.
3. If the light is out, dim or goes out when the starter is cranked, the battery is
discharged. You may try jump starting.
See (c) Jump startingº for further in- structions.
If the light is O.K., but the engine still will
not start, it needs adjustment or repair.
Call a Toyota dealer or qualified repair shop.
NOTICE
Do not pull- or push-start the vehicle. It may damage the vehicle
or cause a collision when theengine starts. Also the three-way catalytic converter may overheatand become a fire hazard.
If the engine turns over at its normal
speed but will not startÐ
1. Check that all the push-on connectors are tight. (For example, connections at the spark plugs, ignition coil and/or dis-
tributor)
2. If the connectors are O.K., the engine may be flooded because of repeated
cranking. See (b) Starting a flooded
engineº for further instructions.

140If the engine will not start, your engine
may be flooded because of repeated cranking.
If this happens, turn the key to STARTº with the accelerator pedal held down.
Keep
the key and accelerator pedal so for
15 seconds and release them. Then try
starting the engine with your foot off the accelerator pedal.
If the engine does not start after 15 sec-
onds of cranking, release the key, wait a few minutes and try again.
If the engine still will not start, it needs ad-
justment or repair. Call a Toyota dealer or
qualified repair shop for assistance.
NOTICE
Do not crank for more than 30 sec- onds at a time. This may overheat
the starter and wiring systems.
To avoid serious personal injury and
damage to your vehicle which might
result from battery explosion, acid
burns, electrical burns, or damaged
electronic components, these instruc-
tions must be followed precisely.
If you are unsure about how to follow this procedure, we strongly recommend that you seek the help of a competent me-
chanic or towing service.
Batteries contain sulfuric acid
which is poisonous and corrosive.
Wear protective safety glasses
when jump starting, and avoid
spilling acid on your skin, cloth-
ing, or vehicle.
If you should accidentally get acid
on yourself or in you eyes, remove
any contaminated clothing and
flush the affected area with water
immediately. Then get immediate
medical attention. If possible, con-
tinue to apply water with a sponge
or cloth while en route to the medi- cal office. CAUTION
!

The gas normally produced by a battery will explode if a flame or
spark is brought near. Use only
standardized jumper cables and
do not smoke or light a match
while jump starting.
NOTICE
The battery used for boosting must be 12 V. Do not jump start unless
you are sure that the booster batteryis correct.
JUMP STARTING PROCEDURE
1. If the booster battery is installed in another vehicle, make sure the ve-
hicles are not touching. T urn off all un-
necessary lights and accessories.
2. If required, remove all the vent plugs from the booster and discharged bat-
teries. Lay a cloth over the open vents
on the batteries. (This helps reduce
the explosion hazard, personal injuries
and burns.)
(b) Starting a flooded engine (c) Jump starting

141
3. If the engine in the vehicle with the
booster battery is not running, start it
and let it run for a few minutes. During
jump starting, run the engine at about
2000 rpm with the accelerator pedal
lightly depressed.
4. Make the cable connection in the ordera, b, c, d.
a. Connect the clamp of the positive (red)
jumper cable to the positive (+) termi-
nal on the discharged battery.
b. Connect the clamp at the other end of the positive (red) jumper cable to the
positive (+) terminal on the booster
battery.c. Connect the clamp of the negative(black) cable to the negative (-) termi-
nal on the booster battery.
d. Connect the clamp at the other end of the negative (black) jumper cable to a
solid, stationary, unpainted, metallic
point of the ve hicle with the discharged
battery.
The recommended connecting points are
shown in the following illustration:

142
Connecting point for 2RZ-FE and
3RZ-FE engines
Connecting point for 5VZ-FE engineDo not connect the cable to or near any
part that moves when the engine is cranked.
When making the connections, to
avoid serious injury, do not lean over the battery or accidentally let
the jumper cables or clamps touchanything except the correct battery
terminals or the ground.
CAUTION
!
5. Start your engine in the normal way. After starting, run it at about 2000 rpm
for several minutes with the accelera- tor pedal lightly depressed.
6. Carefully disconnect the cables in the exact reverse order: the negative
cable and then the positive cable.
7. Carefully dispose of the battery cover clothsÐthey may now contain sulfuricacid.
8. If removed, replace all the battery vent plugs.
If the cause of your battery discharging is
not apparent (for example, lights left on), you should have it checked. If your engine stalls while driving
0
1. Reduce your speed gradually, keeping
a straight line. Move cautiously off the
road to a safe place.
2. Turn on your emergency flashers.
3. Try starting the engine again.
If the engine will not start, see If your ve-
hicle will not startº.
If the engine is not running, the
power assist for the brakes and
steering will not work so steering
and braking will be much harder
than usual. CAUTION
!
If your engine stalls while driving

143
If your engine coolant temperature
gauge indicates overheating, if you
experience a loss of power, or if you
hear a
loud knocking or pinging noise,
the engine has probably overheated.
You should follow this procedure 0
1. Pull safely off the road, stop the ve- hicle and turn on your emergency
flashers. Put the transmission in Pº
(automatic) or neutral (manual) and
apply the parking brake. Turn off the
air conditioning if it is being used.
2. If coolant or steam is boiling out of the radiator or reservoir, stop the engine.
Wait until the steam subsides before
opening the hood. If there is no coolant
boiling over or steam, leave the engine running.
To help avoid personal injury, keep
the hood closed until there is no steam. Escaping steam or coolant is
a sign of very high pressure. CAUTION
! 3. Visually check to see if the engine
drive belt (fan belt) is broken or loose.
Look for obvious coolant leaks from
the radiator, hoses, and under the ve-
hicle. However, note that water drain-ing from the air conditioning is normal if it has been used.
When the engine is running, keep
hands and clothing away from the
moving fan and engine drive belts. CAUTION
!
4. If the engine drive belt is broken of the coolant is leaking, stop the engine im-
mediately. Call a Toyota dealer for as- sistance.
5. If The engine drive belt is O.K. and there are no obvious leaks, you may
help the engine cool down more quick-
ly by running it at about 1500 rpm for
a few minutes with the accelerator
pedal lightly depressed.
6. Check the coolant reservoir. If it is dry, add coolant to the reservoir while the
engine is running. Fill it about half full.
Do not attempt to remove the
radiator cap when the engine and
radiator are hot. Serious injury
could result from scalding hot fluid
and steam blown out underpressure. CAUTION
!
7. After the engine coolant temperature has cooled to normal, again check the
coolant level in the reservoir. If neces-
sary, bring it up to half full again. Seri-
ous coolant loss indicates a leak in the
system. You should have it checked as
soon as possible at your Toyota deal-
er.
If your vehicle overheats

1441. Reduce
your speed gradually, keeping
a straight line. Move cautiously off the
road to a safe place well away from the
traf fic. Avoid stopping on the center di-
vider of a highway. Park on a level spotwith firm ground.
2. Stop the engine and turn on your emergency flashers.
3. Firmly set the parking brake and put the transmission in Pº (automatic) or reverse (manual).
4. Have everyone get out of the vehicle on the side away from traffic.
5. Read the following instructions thor- oughly.
When jacking, be sure to observe
the following to reduce the poss- ibility of personal injury: Follow jacking instructions.
Do not start or run the engine
while your vehicle is supported by a jack. CAUTION
!

Stop the vehicle at a level place
and chock the wheel diagnonally
opposite to the one being
changed. Otherwise, the vehicle
will move and possibly cause un-
expected accident.
Make sure to set the jack properly
in the jack point. Raising the ve-
hicle with jack improperly posi-
tioned will damage the vehicle or
may allow the vehicle to fall off the jack and cause injury to the per-son.
Never get under the vehicle when
the vehicle is supported by the jack alone.
Use the jack only for lifting your
vehicle during wheel changing.
Do not raise the vehicle with some-
one in the vehicle.
When raising the vehicle, do not
put an object on or under the jack.
NOTICE
Do not continue driving with a deflated tire. Driving even a short
distance can damage a tire beyondrepair.
1. Get the required tools and spare tire.
1 Wheel nut wrench
2 Jack handle
3 Jack
4 Wheel ornament replacer (with free-wheeling hubs)
To prepare yourself for an emergency, you should familiarize yourself with the
use of the jack, each of the tools and theirstorage locations.
If you have a flat tireÐ
ÐRequired tools and spare tire
(normal cab models)

155
Towing in this manner may be done only
on hard-surfaced roads for a short dis-
tance and at low speeds. Also, the
wheels, axles, drive train, steering and brakes must all be in good condition.
CAUTION!
Use extreme caution when towing
vehicles. Avoid sudden starts or
erratic driving maneuvers which
would place excessive stress on the
emergency towing eyelet and
towing cable or chain. The eyelet
and towing cable or chain may break and cause serious injury or damage.
NOTICE
Use only a cable or chain specific- ally intended for use in towing
vehicles. Securely fasten the cableor chain to the towing eyelet provided.
Before towing, release the parking brake
and put the transmission in neutral
(manual) or Nº (automatic). The key must
be in ACCº (engine off) or ONº (engine running).
CAUTION!
If the engine is not running, the
power assist for the brakes and
steering will not work so steering
and braking will be much harder
than usual.
If towing is necessary, we recommend
you to have it done by your Toyota
dealer or a commercial tow truck ser-vice.
If towing service is not available in an
emergency, your vehicle may be tem-
porarily towed by a cable or chain se-
cured to the emergency towing hook
under the front of the vehicle. Use ex-
treme caution when towing the ve-hicle.
A driver must be in the vehicle to steer it and operate the brakes.
ÐEmergency towing (four-wheel drive models)

156Towing in this manner may be done only
on hard-surfaced roads for a short dis-
tance and at low speeds. Also, the
wheels, axles, drive train, steering and brakes must all be in good condition.
CAUTION!
Use extreme caution when towing
vehicles. Avoid sudden starts or
erratic driving maneuvers which
would place excessive stress on the
emergency towing hook and towing
cable or chain. The hook and towing
cable or chain may break and cause
serious injury or damage.
NOTICE
Use only a cable or chain specific- ally intended for use in towing
vehicles. Securely fasten the cableor chain to the towing hook provided.
Before towing, release the parking brake, put the transmission in neutral (manual)
or Nº (automatic) and set the transfer inH2º mode. The key must be in ACCº (en-
gine off) or ONº (engine running).
CAUTION!
If the engine is not running, the
power assist for the brakes and
steering will not work so steering
and braking will be much harder
than usual.
Before emergency towing, check that
the hook is not broken or damaged and
that the installation bolts are not loose.
Fasten the towing cable or chain se-curely to the hook.
Do not jerk the hook. Apply steady and
even force.
To avoid damaging the hook, do not
pull from the side or at a vertical angle.
Always pull straight ahead.
ÐEmergency towing hook precautions
(four-wheel drive models)

158
3. Insert the screwdriver or equivalent
into the hole to push up the shift
lock override button. You can shift
out of Pº position only while push-
ing the button.
4. Shift into Nº position.
5. Insert the cover.
6. Start the engine. For your safety, keep the brake pedal depressed.
Be sure to have the system checked by
your Toyota dealer as soon as possible.If you cannot shift the selector lever
out of Pº position to other positions
even though the brake pedal is de-pressed, use the shift lock override
button as follows:
1. Turn the ignition key to LOCKº position. Make sure the parking brake is set.
2. Pry up the cover with a flat-bladed screwdriver or equivalent.3. Insert your finger into the hole tomove the shift lock override lever
backward. You can shift out of Pº
position only while holding back
the lever.
4. Shift into Nº position.
5. Insert the cover.
6. Start the engine. For your safety, keep the brake pedal depressed.
Be sure to have the system checked by
your Toyota dealer as soon as possible.
If you cannot shift automatic
transmission selector lever
(floor shift)

168Where to go for service?
Toyota technicians are well-trained spe- cialists
and are kept up to date with the lat-
est service information through technical
bulletins, service tips, and in-dealership
training programs. They learn to work on
Toyotas before they work on your vehicle,
rather than while they are working on it.
You can be confident that your Toyota
dealer's service department performs the
best job to meet the maintenance require-
ments on your vehicleÐreliably and eco-
nomically.
Your copy of the repair order is proof that
all required maintenance has been per-
formed for warranty coverage. And if any
problems should arise with your vehicle
while under warranty, your Toyota dealer
will promptly take care of it. Again, be sure
to keep a copy of the repair order for any
service performed on your Toyota.
What about do-it-yourself mainte- nance?
Many of the maintenance items are easy
to do yourself if you have a little mechani-
cal ability and a few basic automotive
tools. Simple instructions for how to per-
form them are presented in Part 7. If you are a skilled do-it-yourself me-
chanic, the Toyota service manuals are recommended. Please be aware that do-
it-yourself maintenance can affect your
warranty coverage. See Owner's Guide,
Owner 's
Manual Supplement or W arranty
Booklet for the details. Listed
below are the general maintenance
items that should be performed as fre-quently as specified. In addition to check-
ing the items listed, if you notice any un-
usual noise, smell or vibration, you should
investigate the cause or take your vehicle
to your T oyota dealer or a qualified service
shop immediately. It is recommended
that any problem you notice be brought to
the attention of your dealer or the qualified service shop for their advice.
Make these checks only where
adequate ventilation can be obtain-
ed if you run the engine. CAUTION
!
OUTSIDE THE VEHICLE
Items listed below should be per-
formed from time to time, unless
otherwise specified.
Tire pressure Check the pressure with a gauge every
two weeks, or at least once a month. See Chapter 7-2 for additional information. General maintenance