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1993 Buick Roadmaster CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Buick REPAIR SHOPS DON'T WANT YOU TO KNOW
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- Component Locations
- Wiring Diagrams
- Technical Service Bulletins
- Specifications
- A/C & Heater Service
- Brake Service
- Fuel Filter Replacement
- Driveline, U-Joint & CV Axles Replacement
- Starter & Alternator Replacement
- Maintenance Lamp Reset
- Radiator & Hose Replacement
- Serpentine Belt Service
A/C & HEATER SERVICE PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
Electrical Symbol & Wire Color Code Identification -> Electrical Symbol Identification -> Domestic Vehicles
Vehicle: 1993 Buick Roadmaster Limited 5.7 V8 GAS
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BRAKE SERVICE PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
Hydraulic Brake Systems -> Description -> BRAKE DISTRIBUTION VALVE & SWITCH -> BRAKE WARNING LAMP SWITCHES -> COMBINATION VALVE -> COMPONENT DESCRIPTION -> Diagonally Split System -> Failure Warning Switch -> Fluid Level Sensor -> Front & Rear Split System -> Metering Valve -> Proportioning Or Pressure Control Valve -> SYSTEM OPERATION -> Testing Warning Lamp Operation
Vehicle: 1993 Buick Roadmaster Limited 5.7 V8 GAS
SYSTEM OPERATION
Front & Rear Split System
When the brake pedal is depressed, both the primary (front brake) and the secondary (rear brake) master cylinder pistons are moved simultaneously to exert hydraulic fluid pressure on their respective systems, Fig. .
If the rear (secondary) brake system fails, initial brake pedal movement will cause the unrestricted secondary piston to bottom in the master cylinder bore. Primary piston movement will displace hydraulic fluid in the primary section of the master cylinder to actuate the front brake system.
If the front (primary) brake system fails,...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Component Locations -> 1985-96 Buick, Cadillac, Chevrolet (Except Camaro & Corvette), Oldsmobile & Pontiac (Except Firebird) Rear Wheel Drive Models 4.3L, 5.0L (VIN E) & 5.7L (VIN 6, 7 & P)
Vehicle: 1993 Buick Roadmaster Estate 5.7 V8 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1993 Buick Roadmaster 5.7 V8 GAS
- Raise and support vehicle.
- Mark position of shaft in relation to pinion flange for reassembly.
- Remove straps securing universal joint to pinion flange, then disconnect shaft from flange. Tape bearing cups to universal joint to prevent loss of ne...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
Starter, Replace
Vehicle: 1993 Buick Roadmaster 5.7 V8 GAS
If shims are used between starter and engine block, they should be placed in their original location during installation.
- Disconnect battery ground cable.
- Raise and support vehicle.
- Remove starter to engine brace and starter he...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
General Motors Corp./Saturn Cars -> Reduce Engine Power Indicator Lamp ->
Vehicle: 1993 Buick Roadmaster Estate 5.7 V8 GAS
The Reduce Engine Power indicator lamp should light for a approximately 3 seconds when the ignition is turned on as a bulb check. If the warning lamp turns on during vehicle operation, a vehicl...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
Radiator, Replace
Vehicle: 1993 Buick Roadmaster Estate 5.7 V8 GAS
- Disconnect battery ground cable, then remove air intake duct and resonator.
- Drain coolant into suitable containers through valve located in left radiator end tank.
- Disconnect engine coolant hoses from radiator, then remove engine cooling fans.
- Disconnect and plug transmission cooler and engine oil cooler lines, if equipped.
- Disconnect c...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1993 Buick Roadmaster AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1993 Buick Roadmaster Limited 5.7 V8 GAS
Unless directed otherwise, ignition and start switch must be in OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to ...
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COMPONENT LOCATION DIAGRAMS FOR 1993 Buick Roadmaster AUTOMOBILES
Component location diagrams for most 1993 Buick Roadmaster cars and light trucks sold in the U.S. from 1990+.
RH Lower I/P Diagram for 1993 Buick Roadmaster Estate 5.7 V8 GAS Components on diagram: |
Engine Compartment Location Diagram for 1993 Buick Roadmaster 5.7 V8 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1993 Buick Roadmaster AUTOMOBILES
OEM drawn wiring diagrams for most 1993 Buick Roadmaster cars and light trucks sold in the U.S.
1993 Buick Roadmaster 5.7 V8 GAS Wiring Diagram Components on diagram: |
1993 Buick Roadmaster Estate 5.7 V8 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1993 Buick Roadmaster AUTOMOBILES
OEM TSB listings for most 1993 Buick Roadmaster cars and light trucks sold in the U.S. from 1985+.
Document: Car and Truck Fix It Right the First Time Issues Vehicle: 1993 Buick Roadmaster 5.7 V8 GAS Auto Systems: |
Document: Air Conditioning Odor Vehicle: 1993 Buick Roadmaster 5.7 V8 GAS Symptoms: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1993 Buick Roadmaster AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1993 Buick Roadmaster cars and light trucks sold in the U.S. and Canada from 1970+.
- Brake caliper mounting bolt torque
- Brake drum runout, machining, & discard specs
- Minimum brake lining thickness.
- Brake rotor runout, parallelism, machining, discard, & finish specs
A/C SYSTEM SPECIFICATIONS: Air conditioning refrigerant capacity and type as well as lubricant capacity for most 1993 Buick Roadmaster cars and light trucks sold in the U.S. and Canada from 1980+.
- Refrigerant capacity & type, compressor oil viscosity, total system oil capacity & compressor clutch gap
COOLING SYSTEM BLEED: Cooling system bleeder valve identification, bleeder type and bleed procedures for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1986+.
PREVENTIVE MAINTENANCE: Preventive maintenance recommendations and required services for most domestic and imported cars and light trucks sold in the U.S. and Canada from 1980+. Includes severe and routine service schedules
QUICK-LUBE and ILLUSTRATIONS: Fluid recommendations, capacities, drain plug torques, tire data, and severe service recommended preventive maintenance schedules. Information covers most 1993 Buick Roadmaster cars and light trucks sold in the U.S. and Canada from 1980+. Engine and chassis service images.
- Automatic transmission/transaxles capacities, lubricant recommendations
- Differential/final drive capacities, lube recommendations, grades, & viscosities
- Final drive fill & drain plug torques
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Manual transmission/transaxle capacities, lube recommendations, grades, & viscosities
- Number of lubrication fittings & plugs
- Power steering, brake, & clutch fluid recommendations
- Engine oil capacities, API grade recommendations, SAE viscosity recommendations, drain plug torque
- Severe service maintenance & interval recommendations
- Tire sizes, wheel nut/bolt torque, pressures & rim sizes
- Transfer case capacities, lube recommendations, grades, & viscosities
TUNE-UP & DRIVEABILITY SPECIFICATIONS: Most tune-up specifications for most 1993 Buick Roadmaster cars and light trucks sold in the U.S. and Canada from 1980+
- Airflow sensor electrical specifications
- Tensioning specifications for systems with automatic tensioners
- Barometric pressure sensor specs
- Battery group number and cranking performance
- Crankshaft & camshaft position sensor resistance
- Engine compression pressures
- Coolant temperature sensor specs
- Computer advance.
- Diesel fuel temperature sensor resistance.
- Distributor advance specifications
- Ignition pickup coil resistance
- Exhaust gas recirculation temperature sensor resistance
- Engine fastener torque values
- Firing order diagrams
- Fuel system pressures
- Generator (alternator) specs
- Intake air temperature sensor specs
- Ignition coil specifications
- Fuel injector resistance
- Engine idle speeds
- Knock sensor resistance
- Manifold absolute pressure sensor specs
- Mixture control solenoid resistance
- Voltage regulator specs
- Spark plug applications & gaps
- Starter motor electrical specs.
- Tensioning specifications for systems without automatic tensioners
- Throttle body temperature sensor resistance
- Ignition timing in degrees at rpm
- Transmission oil temperature sensor resistance
- Throttle position sensor specs
- Vacuum sensor valve specs
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