engine BUICK REGAL 1993 Service Manual

1 CAUTION:
You could be injured if the vehicles roll. Set the
parking brake firmly on each vehicle. Put an
automatic transaxle
in “P” (Park) or a manual
transaxle
in “N” (Neutral).
3. Turn off the ignition on both vehicles. Turn off all
lights that aren’t needed, and radios. This will avoid
sparks and help save both batteries. And it could
save your radio!
4. Open the hoods and locate the batteries.
I
I A CAUTION:
An electric fan can start up even wheVv the engine
is not running and can injure you. Keep hands,
clothing and
tools away from any underhooc‘
electric
fan.
Find the positive (+) and negative (-) terminals on
each battery.
Your Buick has a remote positive (+)jump starting
terminal. The terminal is on the same side
of the
engine compartment as your battery.
You should always use the remote positive (+)
terminal instead of the positive (+) terminal on your
battery.
To uncover the remote positive (+) terminal, lift the
red plastic cap.
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1
I A CAUTION:
Using a match near a battery can cause battery
this, and some have been blinded. Use a
I gas to explode. People have been hurt doing
I
I flashlight if you need more light.
Be sure the battery has enough water. You don‘-
need to add water
to the Delco Freedom@ battery
installed
in every new GM vehicle. But if a battery
has filler caps, be sure the right amount of fluid
is there. If it is low, add water to take care of that
First. If you don’t, explosive gas could be present.
Battery fluid contains acid that can burn you.
Don’t get
it on you. If you accidentally get-it in
your eyes or on your skin, flush the place with
water and get medical help immediately.
1 I
5. Check that the jumper cables don’t have loose or
missing insulation. If they do, you could get a shock.
The vehicles could
be damaged, too.
I
Before you connect the cables, here are some basic
things
you should know. Positive (+) will go to
positive
(+) and negative (-) will go to negative (-) or
a metal engine
part. Don’t connect (+) to (-) or you’ll
get a short that would damage the battery and maybe
other
parts, too.
I A CAUTION:
Fans or other moving engine parts can injure you
badly. Keep your hands away from moving parts
I once the engines are running.
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Don’t let the other end touch anything until the next
step. The other end
of the negative cable doesn’t go
to the dead battery. It goes to a heavy unpainted
metal part
on the engine of the vehicle with the dead
battery.
9. Attach the cable at least 18 inches (45 cm) away
from the dead battery, but
not near engine parts that
move. The electrical connection is just
as good there,
but the chance of sparks getting back to the battery is
much less.
10. Now start the vehicle with the good battery and run
11. Try to start the vehicle with the dead battery.
the engine for a while.
If it won’t start after a few tries, it probably needs
service.
12. Remove the cables in reverse order to prevent
electrical shorting. Take care that they don’t touch
each other or any other metal.
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Engine Overheating
You will find a coolant temperature gage on your
Buick's instrument panel.
You may also find a low coolant warning light
on your
Buick instrument panel.
If Steam Is Coming From Your Engine:
A CAUTION:
Steam from an overheated engine can burn you
badly, even
if you just open the hood. Stay away
from the engine
if you see or hear steam coming
from it. Just turn
it off and get everyone away
from the vehicle until it cools down. Wait
until
there is no sign of steam or coolant before
opening the hood.
'* -7ou keep driving when your engine is
overheated, the liquids
in it can catch fire. You or
others could be badly burned. Stop your engine
if it overheats, and get out of the vehicle until the
engine is cool.
If your engine catch
driving with
no coolant, your vehicle can be
badly damaged. The costly repairs
w?uld not b
covered by your warranty. ,, , 1 ,.
I If No Steam Is Coming From Your Engine:
If you get the overheat warning but see or hear no
steam,
the problem may not be too serious. Sometimes
the engine can get a little too hot when you:
0 Climb a long hill on a hot day.
0 Stop after high speed driving.
0 Idle for long periods in traffic.
Tow a trailer.
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If you get the overheat warning with no sign of steam,
try this for
a minute or so:
1.
2.
3.
Turn off your air conditioner.
Turn on
your heater to full hot
speed and open the window as
Try to keep your engine under
where the engine runs slower). at
the highest fan
necessary.
load (in a drive gear
If you no longer have the overheat warning,
you can
drive. Just to be safe, drive slower
for about ten minutes.
If the warning doesn‘t corne back on, you can drive
normally.
If the warning continues, pull over, stop, and park
your
vehicle right away.
If there’s still
no sign of steam, you can idle the engine
for two
or three minutes while you’re parked, to see if
the warning stops. But then, if you still have the
warning,
TURN OFF THE ENGINE AND GET
EVERYONE
OUT OF THE VEHICLE until it cools
down.
You may decide not to lift the hood but to get service
help right
away.
m .... ... ..
h 1
When you decide it’s safe to lift the hood, here’s what
you’ll
see:
0 Coolant recovery tank
0 Radiator pressure cap
0 Electric engine fan
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tder the hood can =&drt up even
is not running and can injure
--, clothing and tools away frnm
I nlcwtric fan-
~ ~~~~ ---
If the coolant inside the coolant recovery tank is boiling,
don’t do anything else until it
cools down. The
coolant level should be at or above the
“COLD”. If
it isn’t, you may have a leak in the radiator hoses, heater
hoses, radiator, water pump or somewhere else
in the
cooling system.
9
Heater and radiator hoses, and other englne
parts, can be very hot.
do, you can be burned.
Don’t run the engine
if there is a leak. If you r,,,
the engine, it could lose all coolant. That could
cause an engine fire, and you could be burned
my leak fixed before you drive +he vehicl,.
I U
If there seems to be no leak, check to see if the electric
engine fan
is running. If the engine is overheating, the
fan should be running.
If it isn’t, your vehicle needs
service.
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How to Add Coolant to the Coolant
Recovery Tank
If you haven’t found a problem yet, but the coolant leveI
isn’t at or above “COLD” add a 50/50 mixture of clean
- water (preferably distilled) and a proper antifreeze at
the coolant recovery tank. (See “Engine Coolant’’
in the
Index for more information about
the proper coolant
mix.)
can bedangerous. Plain water, or some othe
liquid like alcohol, can boil before the prope
coolant mix will. Your vehicle’s coolant warn
system
is set for the proper coolant mix. Wit
plain water or the wrong mix, your engine could
get too hot but you wouldn’t get the overheal
warning. Your engine could catch fire and you or
others could be burned. Use a
50/50 mix of clean
water and a proper antifreeze
m-u mw-.
In cold weath wate :an frc anc
engine, radiator, heater core and other- parts. Use
the recommended coolanl
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Youlean be burned if you spill coolant on hot
engine parts. Coolant contains ethylene glycol
-d it wiil burn if the engine parts are hot
ough. Don't spill
coolant -on a hot engine.
,- '
.Steam and scalding liquids- from a hot 'bootin!,
system can btow o.ut and burn you badly. They
are under pressure,..and.
if you turn the. radiatr-
pre,ssure cap
- even a little - they can come brl
cooling system, including the, radiator pressye
When the coolant in the coolant recovery tank is at or cap, is hot. Wait for the cooling system'and
above "COLD," start your vehicle. radiator pressure cap to cool if:you-ever have to
If the overheat warning continues, there's one more -turn the pressure cap.
thing you can try. You can add the proper coolant mix 3
directly to the radiator, but be sure the cooling system is
cool before you do it.
- at high speed. Never turn,the cap'when the+;:.::
-, .I
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..
1 CAI L
L YOU can De Durnea IT
engine parts. Coola
and it will burn if the engine parts are hot
enough. Don't spill coolant
on a hot engin
ji
After the engine cools, open the coolant air bleed
valve or valves.
r
3.8L V4 (VIN Code L27): There is one bleed valve.
It is located on the thermostat housing.
.EI.r,
3.1L V6 (VIN Code T or M): There are two bleed
valves. One
is located on the thermostat housing.
The other
is located on the thermostat bypass tube.
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3. Fill the radiator
with the proper
mix,
up to the base
of the filler neck.
If you see a stream of coolant coming from an air
bleed
valve, close the valve. Otherwise, close the
valve(s) after the radiator is filled.
4. Rinse or wipe any spilled coolant nom the engine
and compartment.
5. Then fill the coolant recovery tank to "COLD."
6. Put the cap back on the coolant recovery tank, but
leave the radiator pressure
cap off.
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