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Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1993 Buick Lesabre car and truck
repair procedures including Buick engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
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We have info for following modifications of 1993 Buick Lesabre
- 1993 Buick Lesabre Custom 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L
- 1993 Buick Lesabre Limited 3.8 V6 GAS, CID:231, Fuel Injection, Aspiration:231, Engine VIN:, Desg:L
BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.
Disc Brakes -> AC-Delco Single Piston Front Disc Brake (Type 2) -> Caliper Service -> CALIPER ASSEMBLE -> CALIPER DISASSEMBLE -> CALIPER INSTALLATION -> CALIPER REMOVAL
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS
CALIPER REMOVAL
- Remove approximately 2/3 of brake fluid from master cylinder.
- Raise and support front of vehicle, then remove wheel and tire assembly.
- Position suitable pliers over inboard pad and housing as shown in Fig. , and squeeze pliers to compress caliper piston.
- If caliper assembly is being removed for service, remove inlet fitting attaching bolt, copper washer, and inlet fitting from caliper housing. Plug opening in inlet fitting to prevent fluid loss and contamination. Do not crimp brake hose, as this may damage internal structure of hose. If only shoe and lining assemblie...
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BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.
Hydraulic Brake Systems -> Component Service -> Assemble -> CORVETTE -> Disassemble -> EXCEPT CORVETTE -> MASTER CYLINDER OVERHAUL -> WHEEL CYLINDER OVERHAUL
Vehicle: 1993 Buick Lesabre Limited 3.8 V6 GAS
MASTER CYLINDER OVERHAUL
EXCEPT CORVETTE
Disassemble
Refer to Figs. and when performing the following procedures.
- Remove master cylinder from vehicle as follows:
- Disconnect and plug hydraulic lines.
- Remove two master cylinder attaching nuts, then the master cylinder.
- Remove reservoir cover and diaphragm. Discard old brake fluid in reservoir.
- Inspect cover and diaphragm. Replace if cut, cracked or deformed.
- Remove fluid level switch, if equipped.
- On models with compact master cylinder, remove proportioner valve assembly, Fig. .
- Depress primary piston and remove lock ring.
- Plug primary fl...
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BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.
Power Brake Units -> Description -> AC-DELCO SINGLE DIAPHRAGM TYPE -> AC-DELCO TANDEM DIAPHRAGM TYPE -> BCIA SINGLE & TANDEM DIAPHRAGM TYPE
Vehicle: 1993 Buick Lesabre Limited 3.8 V6 GAS
AC-DELCO TANDEM DIAPHRAGM TYPE
This unit utilizes a vacuum power chamber, consisting of a front and rear shell, housing divider, front and rear diaphragm, plate assemblies, hydraulic pushrod and a diaphragm return spring, Figs. and .
The unit operates in much the same manner as the single diaphragm unit described previously. The diaphragm and plate assemblies utilize the pressure differential between the engine intake manifold vacuum and atmospheric pressure to assist in braking.
AC-DELCO SINGLE DIAPHRAGM TYPE
The AC-Delco power booster assembly, Fig. is located along the bulkhead in ...
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BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.
Power Brake Units -> Precautions
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS
- After disassembling a power brake unit, soak all metal parts in solvent.
- Use only alcohol on parts containing rubber. After the parts have been thoroughly cleaned and rinsed in solvent, they should be rewashed in clean alcohol before assembling.
- Use compressed air to blow dirt and cleaning fluid from the recesses and internal passages.
- Always use ...
CLICK HERE TO GET FULL ACCESS TO 1993 Buick Lesabre BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.
Anti-lock Brakes -> Bonneville, Eighty Eight, LeSabre, Ninety Eight, Park Avenue, 1992 DeVille & Fleetwood (FWD) (Teves Type) -> Description -> BRAKE WARNING LAMP -> ELECTRONIC BRAKE CONTROL MODULE (EBCM) -> WHEEL SPEED SENSORS
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS
Refer to Fig. , for overview of anti-lock brake system.
The purpose of the anti-lock brake system is to prevent wheel lock-up under heavy braking conditions, on virtually any road surface. When a wheel locking condition exists, the pressure modulator valve (PMV) assembly isolates each wheel hydraulic circuit, then begins modulation of fluid pressure to each wheel according to wheel speed input to the EBCM. The PMV is controlled by the Electronic Brake Control Module (EBCM).
Modulation occurs by means of three ABS modes: pressure hold, pressure reduce and pressure increase. The PMV ass...
CLICK HERE TO GET FULL ACCESS TO 1993 Buick Lesabre BRAKE SERVICE PROCEDURES
BRAKE SERVICE PROCEDURES FOR 1993 Buick Lesabre AUTOMOBILES
Includes anti-lock brakes, disc, drum, power and hydraulic brake services diagnostics and procedures for domestic and imported 1993 Buick Lesabre cars and light trucks from 1990+.
Anti-lock Brakes -> Bonneville, Eighty Eight, LeSabre, Ninety Eight, Park Avenue, 1992 DeVille & Fleetwood (FWD) (Teves Type) -> Diagnosis & Testing -> 1992-93 MODELS, EXCEPT 1993 LESABRE & PARK AVENUE -> 1993-94 LESABRE & PARK AVENUE -> 1994 BONNEVILLE, 88 & 98 -> ABS System Self-Diagnosis Description -> Anti-Lock Warning Lamp -> Code Interpretation & Functional Check -> Description -> Diagnostic Tests -> History & Current ABS Codes -> Note On Intermittents -> Symptom Diagnosis -> Wiring Diagrams
Vehicle: 1993 Buick Lesabre Custom 3.8 V6 GAS
Description
Anti-Lock Warning Lamp
The amber Anti-lock warning lamp is located in the instrument panel cluster. This lamp will illuminate when the EBCM detects a malfunction in the anti-lock brake system. The warning lamp is intended only to warn the driver that a condition has been detected which results in partial or total reduction of the anti-lock brake system. Under this condition full operation of the standard hydraulic braking system is available. If both the red Brake and the amber Anti-Lock brake lights are illuminated, there may be something wrong with the hydraulic ...
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