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1992 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 1992 Buick Roadmaster AUTOMOBILES
Cooling Fans -> Passenger Cars Except Saturn -> CUTLASS CIERA & CUTLASS CRUISER -> 2.5L Engine -> 3.3L Engine -> COMPONENT REPLACEMENT -> Coolant Fan Does Not Turn Off With Engine Coolant Cool, A/C Off & Ignition Switch In Run Position -> Coolant Fan Does Not Turn On -> Coolant Fan, Replace -> DESCRIPTION -> System Check -> System Diagnosis -> SYSTEM DIAGNOSIS & TESTING -> TROUBLESHOOTING
Vehicle: 1992 Buick Roadmaster 5.7 V8 GAS
DESCRIPTION
2.5L Engine
The coolant fan is turned on and off by the ECM based on inputs from the coolant temperature sensor, vehicle speed sensor and the A/C system. Battery voltage is applied at all times to terminal E of the coolant fan relay and when the ignition switch is in RUN position, battery voltage is applied to terminal C of the relay. The ECM energizes the coolant fan relay by grounding the dark green/white wire. The relay energizes and battery voltage is applied to the cooling fan. The ECM opens circuit 335 to de-energize the relay a...
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BRAKE SERVICE PROCEDURES FOR 1992 Buick Roadmaster AUTOMOBILES
Power Brake Units -> Adjustments -> AC-Delco Type -> AIR METHOD -> BRAKE PEDAL -> GAUGE METHOD -> PUSHROD -> Single Diaphragm Type -> Toyota/GM Single Diaphragm Type
Vehicle: 1992 Buick Roadmaster 5.7 V8 GAS
BRAKE PEDAL
Toyota/GM Single Diaphragm Type
- With engine running and brake pedal in rest position, measure distance between face of pedal and floor mat.
- If distance is not 5.79-6.18 inches, adjust pedal height as follows:
- Remove left lower instrument panel trim section and air duct.
- Loosen stop lamp switch sufficiently to gain clearance for pedal adjustment.
- Loosen locknut and rotate pedal pushrod as needed to obtain specified pedal height, then tighten locknut.
- Adjust position of brake light switch so that plunger lightly contacts pedal stopper and brake lamps are off when pedal is release...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1992 Buick Roadmaster AUTOMOBILES
General Motors Corp./Saturn Passenger Cars -> Fuel Filter Replacement -> Except Aveo, Chevette 1.8L Diesel, Corvette, GTO, LaCrosse, Malibu (2004-06) & Malibu Maxx, Vibe, XLR, 2004-05 Corvette & 1998-2002 Metro & Prizm
Vehicle: 1992 Buick Roadmaster Estate 5.7 V8 GAS
Do not smoke or allow an open flame of any type when working on or near any fuel system related components. The highly flammable vapor mixtures may ignite, resulting in serious personal injury.
Prior to disconnecting fuel lines, the fuel system pressure must be relieved to prevent accidental spray of fuel.
After the battery has been disconnected and reconnected, some abnormal driveability symptoms may occur. The vehicle may need to be driven while the v...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1992 Buick Roadmaster AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1992 Buick Roadmaster Estate 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 1992 Buick Roadmaster AUTOMOBILES
Alternator, Replace
Vehicle: 1992 Buick Roadmaster Limited 5.7 V8 GAS
- Disconnect battery ground cable.
- Disconnect positive cable from alternator BAT terminal.
- Remove nut and bolt.
- Loosen nut and move brace out of way.
- Remove bolt, nut and brace.
- Remove nuts, bolt and also brace.
- Reposition alternator to make access to electrical connections easier.
- Remove engine harness electrical connector from alternator.
- Remove alternator from vehic...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1992 Buick Roadmaster AUTOMOBILES
General Motors Corp./Saturn Cars -> Check Gauge Warning Lamp ->
Vehicle: 1992 Buick Roadmaster Estate 5.7 V8 GAS
The Check Gauge warning lamp will light to warn the driver to inspect the oil pressure gauge, engine coolant temperature ga...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1992 Buick Roadmaster AUTOMOBILES
Coolant Hose, Replace -> Lower -> Upper
Vehicle: 1992 Buick Roadmaster 5.7 V8 GAS
Lower
- Drain cooling system into a suitable container.
- Reposition hose clamp from radiator using hose clamp pliers.
- Remove radiator outlet hose from radiator.
- Reposition hose clamp from water pump housing using hose clamp pliers.
- Remove radiator outlet hose from water pump housing and from vehicle.
- Reverse procedure to i...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1992 Buick Roadmaster AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1992 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 1992 Buick Roadmaster AUTOMOBILES
Component location diagrams for most 1992 Buick Roadmaster cars and light trucks sold in the U.S. from 1990+.
RH Roof Rail Diagram for 1992 Buick Roadmaster Estate 5.7 V8 GAS Components on diagram: |
RH Forward Engine Compartment Diagram for 1992 Buick Roadmaster Limited 5.7 V8 GAS Components on diagram: |
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WIRING DIAGRAMS FOR 1992 Buick Roadmaster AUTOMOBILES
OEM drawn wiring diagrams for most 1992 Buick Roadmaster cars and light trucks sold in the U.S.
1992 Buick Roadmaster 5.7 V8 GAS Wiring Diagram Components on diagram: |
1992 Buick Roadmaster Estate 5.7 V8 GAS Wiring Diagram Components on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1992 Buick Roadmaster AUTOMOBILES
OEM TSB listings for most 1992 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: 1992 Buick Roadmaster 5.7 V8 GAS Auto Systems: |
Document: GM TIRE WARRANTY PROGRAM CLAIMS GOODWILL GUIDELINES - REVISED Vehicle: 1992 Buick Roadmaster 5.7 V8 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1992 Buick Roadmaster AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1992 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 1992 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 1992 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 1992 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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