radiator cap OLDSMOBILE SILHOUETTE 1993 Owners Manual

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.
Cooling System
When you decide it’s safe to lift the
hood, here’s what you’ll see:
(A) Coolant recovery tank
(B) Radiator pressure cap
(C) Electric engine fan, or fans if you
have the rear climate control system
or the
3800 V6 engine.
I A An electric fan under the hod
L can start up even when the
engine is not running and can
injure
you. Keep hands, clothing
and‘tools away from any
underhood electric fan.
If the coolant inside the coolant
recovery
tank is boiling, don’t do
anything else
until it cools down.
197
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Problems on the Road
Engine Overheating (CONX)
I A Steam and scalding liquids I
I from a hot cooling system can
blow out and bum you badly. They
I
are under pressure, and if you turn
the radiator pressure cap-even a
little-they can come out at high
speed. Never
turn the cap when
the cooling system, including the
radiator pressure cap, is hot Wait
for the cooling system and radiator
pressure cap to cool if you ever
have to turn the pressure cap.
~ I Vow to Add Coolant to the Radiator:
I. You can remove the radiator pressure
cap when the cooling system, including
the radiator pressure cap and upper radiator hose, is no longer hot.
Turn
the pressure cap slowly to the left
until it first stops. (Don’t press down
while turning the pressure cap.)
If you hear a hiss, wait for that to stop.
A hiss means there is still some pressure
left.
2. Then keep turning the pressure cap,
but now push down as you turn it.
Remove the pressure cap.
~ 200
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3. Fill the radiator with the proper mix,
up
to the base of the filler neck.
4. Then fill the coolant recovery tank to
the
FULL HOT mark.
5. Put the cap back on the coolant
recovery tank, but leave
the radiator
pressure cap
off.
201
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Problems on the Road
202
P
Engine Overheating (CONI)
6. Start the engine and let it run until
you can feel the upper radiator hose
getting
hot. Watch out for the engine
fan(
s) .
7. By this time, the coolant level inside
the radiator filler neck may be lower.
If
the level is lower, add more of the
proper
mix through the filler neck
until the level reaches the base
of the
filler neck.
8. Then replace the pressure cap. Be
sure the arrows
on the pressure cap
line up like this.
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P P
3,lL V6 Engine (CODE D)
1. Engine Coolant Reservoir
2. Power Steering Fluid Reservoir
3. Air Cleaner
4. Brake Fluid Reservoir
5. Windshield Washer Fluid Reservoir
6. Battery
7. Automatic Transaxle Fluid Dipstick
8. Engine Oil Dipstick
9. Engine Oil Fill Can
1 0. Radiator Cap
@ U6084
223
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Service & Appearance Cure
224
P P
3800 V6 Engine (CODE L)
1 . Engine Coolant Reservoir
2. Power Steering Fluid Reservoir
3. Automatic Transaxle Fluid Dipstick
4. Brake Fluid Reservoir
5. Windshield Washer Fluid Reservoir
6. Battery
7. Air Cleaner
8. Engine Oil Dipstick
9. Engine Oil Fill Cap
10. Radiator Cap
(3 U6085
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3.1L V6: Checking Coolant
3800 V6: Checking Coolant
To Add Coolant:
If you need more coolant, add the Add
coolant mix at the recovery tank,
r
proper mix at the coolant recovery but be careful not to spill it.
tank.
coolant on hot engine parts.
cap when the engine and Coolant contains ethylene glycol,
radiator are hot can allow steam and it will burn if the engine parts
and scalding liquids to blow out are hat enough. Don’t spill coolant
and burn you badly. With the
coolant recovery
tank, you will
almost never have to add coolant at
the radiator. Never turn
the
radiator pressure cap-even a
little-when
the engine and
radiator are
hot
237
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Service & Appearance Care
238
Radiator Pressure Cap
(105 kPa) pressure-type cap and
must be tightly installed to prevent
$3
coolant loss and possible engine +-
damage from overheating. Be sure
the arrows on the cap line up with
the overflow tube on
the radiator
filler neck.
When
you replace your radiator pressure
cap, an
AC@ cap is recommended.
Thermostat
Engine coolant temperature is controlled
by a thermostat
in the engine coolant
system. The thermostat stops the flow
of
coolant through the radiator until the
coolant reaches a preset temperature.
When
you replace your thermostat, an
AC@ thermostat is recommended.
Power Steering Fluid
How to Check Power Steering Fluid:
Unscrew the cap and wipe the dipstick
with a clean rag. Replace the cap
and
completely tighten it. Then remove the
cap again and look at the fluid level on
the dipstick.
When the engine compartment is hot,
the level should be at the
H (Hot)
mark.
the level should be at the
C (Cold)
mark.
When the engine compartment is cool,
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ITEM
NO.
5
6
7
SERVICE
Engine Accessory Drive Belt Inspection-
Inspect the drive belt for cracks, hying, wear and
proper tension. Replace as needed.
Cooling
System Service*-Drain, flush and refill
the system with new or approved recycled coolant
conforming to
GM Specification 1825M. Keep
coolant at the proper mixture as specified. See the
Index under Coolant. This provides proper freeze
protection, corrosion inhibitor level and engine operating temperature.
Inspect hoses and replace if they
are cracked,
swollen or deteriorated. Tighten screw-type hose
clamps. Clean the outside of the radiator and air
conditioning condenser. Wash the pressure cap and
neck.
To help ensure proper operation, we recornmend a
pressure test of both the cooling system
and the
pressure cap.
Transaxle Service-Change both the fluid and
filter every
15,000 miles (25 000 km) if the vehicle
is mainly driven under one or more
of these
conditions:
ITEM
NO. SERVICE
In heavy city traffic where the outside tem-
perature regularly reaches
90" F (32" C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing.
Uses such as found in taxi, police car or delivery
If you do not use your vehicle under any of
these conditions, change both the fluid and filter
every
100,OOO miles (160 000 km).
with the proper type. See the Index under
Replacement Parts.
9 Spark Plug Wire Inspection*-Inspect for burns,
cracks
or other damage. Check the boot fit at the
distributor or coils and at the spark plugs. Replace
wires as needed. service.
8 Spark Plug
Replacement*-Replace spark plugs
285
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316
New Vehicle “Break-In”
Requirements
............ .60. 178
Night Driving
.................. 159
Night Vision
................... 160
octane Requirements
(see
Fuel Requirements)
Odometer and Speedometer ....... 103
Oil. Engine ................... 225
Pressure Gage
................ 106
Pressure Indicator
............. 106
Quality
..................... 227
Thickness
................... 227
UsedOil
.................... 230
When to Change .............. 229
Oil Warning
................... 106
Operation
of Lights .............. 80
Outside Rearview Mirrors
......... 92
Overhead Console
............... 85
Overheated Engine .............. 195
Warnings
........... .195, 236, 238
Owner Checks
& Services ........ 287 park.
Shifting Into
.............. 69
Parking On
Hills ................ .171. 183
Parking Brake
.................. 68
Parking on
Hills ........... .171. 183
Passing
....................... 156
Payload ...................... 245
Over Things That
Burn.
......... 71
With the Engine Running
.... .70. 72
Passenger Belts (see
Safety Belts)
Periodic Maintenance Inspections ... 290
Polishing and Waxing
(see
Appearance Care)
Power (Anti-Lock) Brakes ........ 149
Power Door Locks
.............. 48
Power Mirrors
.................. 92
Power Outlet. Accessory
.......... 90
Power Seat Controls ............. 15
Power Sliding
Door .............. 54
Power Steering
................. 153
Power Steering Fluid
... .238. 270, 272
Power Windows
........... .74. 268
Pregnancy. Use of Safety Belts During
...................... 29
Problems on the Road
........... 185
Publications
.................. 304 Radiator
Overheating
(see Overheated Engine)
Radiator Pressure Cap ........... 238
Radio (see
Audio Systems)
Reading Lights .................. 85
Rear Climate Control
............ 117
Rear Interior Lights
.............. 89
Rear Seats
...................... 17
Adjusting
.................... 19
Removing
.................... 18
Replacing
.................... 20
Third Row Entry
............... 17
Rear Window Defogger
........... 119
Rear Window Wiper and Washer
.... 84
Rearview Mirror
................ 92
Reclining Seatbacks
.............. 15
Reminder Light ................. 25
Remote Keyless Entry
............ 49
Replacement Bulbs
.............. 273
Replacement Fuses
............. 265
Replacement
Parts .............. 271
Remote Fuel Door Release
........ 219
Removing Rear Bucket Seats
...... -18
Replacing Brake System
Parts ..... 242
Replacing Bulbs
........... .243, 244
Replacing Rear Bucket Seats
....... 20
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