1993 Oldsmobile Cutlass Supreme check engine

Maintenance Schedule
Section A: Scheduled Maintenance Services (Cant.)
Explanation of Scheduled Maintenance Services
Below are explanations of the services listed in Schedule I
and Schedule 11.
The proper fluids and lubricants to use are listed in Section
D. Make sure whoever services your vehicle uses these. All
parts should be replaced and all necessary repairs done
before you or anyone else drives the vehicle.
ITEM
NO. SERVICE
1 Engine Oil and Filter Change”-Always use SG
296
2
Energy Conserving I1 oils for proper viscosity. The
“SG” designation may be shown alone or in
combination with others, such as “SG/CC,”
“SG/CD” or “SF, SG, CC,” etc.
To determine the
preferred viscosity for your vehicle’s engine (e.g.,
SAE 5W-30 or SAE 1OW-30) see the Index under
Engine Oil.
Chassis Lubrication-Lubricate the transaxle shift
linkage, parking brake cable guides, underbody
contact points and linkage. Lubricate the front and
rear suspension and steering linkage.
ITEM
NO. SERVICE
3 Throttle Body Mounting Bolt Torque (3.1L
Code T or M engines only)*-Check the torque of
the mounting bolts and/or nuts.
4 Tire and Wheel Rotation and Inspection-For
proper wear and maximum tire life, rotate your
tires following the instructions in this manual. See
the
Index under Tires, Inspection G Rotation.
Check the tires for uneven wear or damage. If you
see irregular or premature wear, check the wheel
alignment. Check for damaged wheels also.
NOTE: To determine your engine’s displacement and code, see the Index under Engine Identification
* An Emission Control Service.
0 The U.S. Environmental Protection Agency has determined that the failure to perform this maintenance item will not nullify the emission warranty QY
limit recall liability prior to the completion of vehicle useful life. General Motors, however, urges that all re\
commended maintenance services be
performed
at the indicated intervals and the maintenance be recorded in Section E: Maintenance Record.

ITEM
NO. SERVICE
5
6
7
Engine Accessory Drive Belt (s) Inspection
(California
3.1L Code T engine”)-Inspect the
belt for cracks, fraying, wear and proper tension.
Replace as needed.
Camshaft Timing Belt Inspection
(3.4L Code X
engine only)*-Inspect for cracks, wear or oiliness.
Check tensioner for proper operation. See the
service manual. (To purchase a service manual,
see the
Index under Publications.) Replace parts
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 recommend a
pressure test of both the cooling system and the
pressure cap.
ITEM
NO. SERVICE
8 Transaxle Service-Change both the fluid and
filter every 15,000 miles (25 000 ltm) if the vehicle
is mainly driven under one or more of these
conditions:
In heavy city traffic where the outside
temperature regularly reaches
90°F (32°C) or
higher.
In hilly or mountainous terrain.
When doing frequent trailer towing. (With some
models, you shouldn’t ever tow a trailer. See the
Index under Towing a Trailer.)
Uses such as found in taxi, police car, or delivery
service.
If you do not use your vehicle under any
of these
conditions, change both the fluid and filter every
100,000 miles (160 000 lun) .
Spark Plug Replacement*-Replace spark plugs
with the proper type. See the
Index under
Replacement Parts.
burns, cracks or other damage. Check the boot fit
at the coils and at the spark plugs. Replace wires
as needed.
10 Spark Plug Wire Inspection**-Inspect for
9
297

Section B: Owner Checks & Services
Listed below are owner checks and services which should be Be sure any necessary repairs are completed at once.
made at the intervals specified to help ensure the safety, Whenever any fluids or lubricants are added to your vehicle,
dependability and emission control performance of your make sure they are the proper ones, as
shown in Section D.
vehicle.
At Each Fuel Fill (/t is important for you or a service station attendant to perform these underhood check\
s at each fuel fill.)
CHECK
OR SERVICE I WHAT TO DO
Engine Oil Level Check the engine oil level and add the proper oil if necessary. See the Index under Engine Oil for
further details.
Engine Coolant Level
See the
Index under Windshield Washer Fluid for further details.
Fluid Level Check the
windshield washer fluid level in the windshield washer
tank and add fluid if necessary. Windshield Washer
Check the engine coolant
level in the coolant recovery tank and add the proper coolant mix if
~~ ~ ~~
necessary. See the Index under Coolant for further details.
At Least Once a Month
CHECK
I OR SERVICE I WHAT TO DO
Tire Inflation
Check tire inflation. Make sure they are inflated to the pressures specified on the Tire-Loading
~~ ~
Information label located on the rear edge of the driver’s door. See the Index under Tires for
further details.
r
L
299

Maintenance Schedule
Section 8: Owner Checks & Services (cant.)
300
At Least Once a Year
CHECK
OR SERVICE WHAT TO DO
~ ~_~__
Key Lock Cylinders Lubricate the key lock cylinders with the lubricant specified in Section D.
Body Lubrication Lubricate all body door hinges. Also lubricate all hinges and latches, including those for the
hood, rear compartment, glove box door, console door and any folding seat hardware. Section
D
tells you what to use.
CAUTION
n
I When you are doing this chock, the vehicle could move suddenly. If it does, you or others
1. Before you start, be sure you have enough room around the vehicle.
2. Firmly apply both the parking brake (see the Index under Parking Brake if necessary) and the
regular brake.
NOTE:
Do not use the accelerator pedal, and be ready to turn off the engine immediately if it
starts.
3. Try to start the engine in each gear. The starter should work only in P (Park) or N (Neutral).
If the starter works in any other position, your vehicle needs service.

CHECK
OR SERVICE
Steering Column Lock
Parking Brake and
Automatic Transaxle
P (Park) Mechanism
Check
Underbody Flushing
WHAT TO DO
While parked, and with the parking brake set, try to turn the key to Lock in each shift lever
position.
The key should turn to Lock only when the shift lever is in P (Park).
The key should come out only in
Lock.
When you are doing this check, your vehicle could begin to move. You or others could be
injured and property could be damaged. Make sure there is room in front
of your vehicle
in case it begins
to roll. Be ready to apply the regular brake at once should the vehicle begin to
move.
Park on a fairly steep hill, with the vehicle facing downhill. Keeping your fool
un the regula1
brake, set the parking brake.
To check the parking brake: With the engine running and transaxle in N (Neutral), slowly
remove foot pressure from the regular brake pedal.
Do this until the vehicle is held by the
parking brake only.
To check the P (Park) mechanism’s holding ability: Shift to P (Park). Then release all brakes.
At least every spring, use plain water to flush any corrosive materials from the underbody. Take
care
to clean thoroughly any areas where mud and other debris can collect. 1 301

Maintenunce Schedule
Section C: Periodic Maintenance Inspections
Listed below are inspections and services which should be performed at least twice a year (for instance, each spring and fall).
You should let your GM dealer’s service department or other qualified service center do these jobs. Make sure any necessary
repairs
are completed at once.
302
INSPECTION
OR SERVICE
Steering, Suspension
and Front-Wheel-Drive
Axle Boot and Seal
Inspection
Exhaust System
Inspection
Throttle Linkage
Inspection
Brake System
Inspection
WHAT SHOULD BE DONE
Inspect the front and rear suspension and steering system for damaged, loose or missing parts,
signs of wear, or lack of lubrication. Inspect the power steering lines and hoses for proper
hookup, binding, leaks, cracks, chafing, etc. Clean and then inspect the drive axle boot seals for
damage, tears or leakage. Replace seals if necessary.
Inspect the complete exhaust system. Inspect the body near the exhaust system. Look for broken,
damaged, missing or out-of-position parts as well as open seams, holes, loose connections, or
other conditions which could cause a heat build-up in the floor
pan or could let exhaust fumes
into the vehicle. See the
Index under Engine Ekhaust.
Inspect the throttle linkage for interference or binding, and for damaged or missing parts.
Replace parts as needed.
Inspect the complete system. Inspect brake lines and hoses for proper hookup, binding, leaks,
cracks, chafing, etc. Inspect disc brake pads for wear and rotors for surface condition. Inspect
other brake parts, including calipers, parking brake, etc. Check\
parking brake adjustment. You
may need to have your brakes inspected more often if your driving habits or conditions result
in
frequent braking.
NOTE: A low brake fluid level can indicate worn disc brake pads whi\
ch may need to be
serviced. Also, if the brake system warning light stays on or comes on, something may be wrong
with the brake system. See the
Index under Brake System Warning Light. If your vehicle is
equipped with anti-lock brakes and the anti-lock brake system w\
arning light stays on, comes on
or flashes, something may be wrong with the anti-lock brake system. See the
Index under Anti-
Lock Brake System Warning Light.

Y'
Setting the Clock .......................... 118
Steering Wheel Touch Controls
...................................... 132
Automatic Lap-Shoulder Belt
(see Safety Belts)
Automatic Transaxle Adding Fluid
.................. 233, 276, 278
Checking Fluid
............................... 231
Shifting
............................................. 58
Starting the Engine
.......................... 55
325

Index
326
Brake System Warning Light Anti-Lock Brake System
................. 99
Standard Brakes
............................... 98
Brakes. Anti-Lock
........................... 149
Warning Light
.................................. 99
Braking
in Emergencies ................... 153
Braking Technique ........................... 148
Break.Tn. New Vehicle
Normal Driving
............................... 54
When Towing a Trailer
.................. 177
Braking
............................................. 148
Buckling Up (see
Safety Belts)
Bulb Replacement
Center High-Mounted
Stoplight
.............................. 263. 280
Fog Lights
..................................... 249
Taillight
................................. 247. 280
Headlight
............................... 243. 280
Capacities and Specifications
....... 276
Carbon Monoxide
in Exhaust ............ 66
Cassette Tape Holder
........................ 83
Cassette Tape Player
(see
Audio Systems)
Center Lap Belts (see Safety Belts)
Chains. Tire ............................. 212. 258
Changing a Flat Tire
......................... 205
Checking Aim
of the Headlights .................... 241
Automatic Transaxle Fluid
............................................. 231
Brake Fluid
.................................... 238
Engine Coolant
............................. 235
Engine Oil
..................................... 226
Power Steering Fluid
.................... 237
Safety Belt Systems
.......................... 42
Things Under the Hood
................. 222
Child Restraints
.................................. 31
Children
............................................. 30
Cigarette Lighter
................................ 84
Circuit Breakers
& Fuses ................ 270
City Driving
..................................... 165
Cleaner, Air
.............................. 230, 283
Cleaning Aluminum Wheels
........................ 265
Antenna
......................................... 135
Cassette Player and Tapes
............ 134
Compact Discs
.............................. 135
Fabric .............................................. 260 Fiberglass Springs
......................... 268
Glass
............................................... 263
HUD (Head-Up Display)
............. 104
Inside
of Your Vehicle ................... 260
Leather and Vinyl
.......................... 262
Outside
of Your Vehicle ............... 265
Safety Belts
................................... 262
Special Problems
........................... 261
Underbody Maintenance
.............. 267
Warnings
........................................ 259
Weatherstrips
................................ 266
White Sidewall Tires
..................... 266
Windshield
.................................... 264
Clock, Setting the
............................. 118
Clusters. Instrument Panel ................ 90
Coin Holder ....................................... 83
Comfort Controls
Climate Control
.............................. 110
Electronic Climate Control
............ 113
Steering Wheel Touch Controls
.... 116
Ventilation ..................................... 111
Compact Disc Player
(see
Audio Systems)
Compact Spare Tire ......................... 211
Compartments, Storage
............... 83, 84