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1991 Subaru Legacy CAR/TRUCK REPAIR PROCEDURES AND DIAGRAMS - WHAT Subaru REPAIR SHOPS DON'T WANT YOU TO KNOW
Learn how to repair a car or truck, install or remove parts, wire an engine, reset warning lights, replace fuel filter, fix auto body and more. Get Automotix DIY!Select Section
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- 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
Automotix DIY provides automotive consumers and do it yourselfers; the most comprehensive repair information about 1991 Subaru Legacy car and truck
repair procedures including Subaru engine diagrams, wiring diagrams, repair work estimating measures, technical service bulletins, auto body work
guidance, starter & alternator replacement procedures, serpentine belt replacement procedures, radiator & hose replacement procedures, tune-up &
drivability specifications, quick lube illustrations, preventive maintenance guide, engine light reset instructions, parts removal and install
procedures, fuel filter replacement directions, component location diagrams, air filter locations & replacement instructions, a/c
system specifications, and general auto service procedures. You don't have to be a car mechanic or technician to know how to fix
your Subaru Legacy automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
Subaru -> Cooling Fans -> COMPONENT REPLACEMENT -> COOLING FAN & MOTOR, REPLACE
Vehicle: 1991 Subaru Legacy LSI 2.2 H4 GAS
COOLING FAN & MOTOR, REPLACE
- Disconnect battery ground cable.
- Disconnect fan motor electrical connector, then remove harness from shroud, if equipped.
- On SVX models, remove radiator bracket.
- On Legacy models, loosen lower shroud mounting bolts, then remove upper shroud mounting bolts.
- On Loyale, SVX and XT models, remove shroud mounting bolts, ...
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BRAKE SERVICE PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
SUBARU, ANTI-LOCK BRAKES -> TROUBLESHOOTING
Vehicle: 1991 Subaru Legacy LSI 2.2 H4 GAS
Refer to Figs. through for ABS troubleshooting procedures. The ABS control unit receives and sends signals that control system functions. It is impo...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
Subaru -> Fuel Filter Replacement -> Except Justy w/Carbureted Engine -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 1991 Subaru Legacy Sport 2.2 H4 GAS
Fuel System Pressure Relief
- On Impreza, SVX, 1990-94 Legacy models,fold down the rear seat back, then remove the floor mat and access hole lid.
- On 1995-00 Legacy models, remove the rear seat cushion and seat back, then the floor mat and access hole lid.
- On all models, disconnect the fuel pump relay electrical connector.
- Start the engine and operate until it stalls.
- After the engine has stalled, crank the engine for at least 5 seconds.
- Place the ignition switch in Off position.
- Disconnect the battery ground cable.
- Connect the fuel pump electrical connector.
- On...
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 1991 Subaru Legacy L 2.2 H4 GAS
- Disconnect ground cable from battery.
- Move selector lever or gear shift lever to "N".
- Release parking brake.
- Jack up vehicle and support it with sturdy racks.
- Remove rear exhaust pipe and muffler.
- Remove front exhaust cover.
- Remove differential mount front cover.
- Remove four bolts which hold propeller shaft to rear differential. Put matching marks on affected parts before removal. Remove all but one bolt.
- Remove two bolts which hold center bearing to car body.
- Place a s...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
Starter, Replace
Vehicle: 1991 Subaru Legacy Sport 2.2 H4 GAS
- Disconnect battery ground cable.
- Disconnect battery cable and solenoid wiring at sta...
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MAINTENANCE LAMP RESET PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
Subaru -> Driver Control Center Differential Indicator Lamps ->
Vehicle: 1991 Subaru Legacy Sport 2.2 H4 GAS
The Driver Control Center Differential Indicator lamps show the current differential limiting factor of the center differential. The bottom indicator lamp will flash if a...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
Radiator, Replace
Vehicle: 1991 Subaru Legacy Sport 2.2 H4 GAS
- Disconnect battery cables and remove battery.
- Drain engine coolant into a suitable container.
- Disconnect radiator inlet and outlet hoses from engine.
- Remove drive belt cover.
- Remove reservoir tank and overflow hose.
- Disconnect connectors of radiator main fan and sub fan motor.
- Remov...
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SERPENTINE BELT SERVICE PROCEDURES FOR 1991 Subaru Legacy AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 1991 Subaru Legacy LS SP 2.2 H4 GAS
- Remove drive belt cover. Wipe off any oil or water on belt and pulley.
- Loosen lockbolt on slider bolt.
- Loosen slider bolt.
- ...
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COMPONENT LOCATION DIAGRAMS FOR 1991 Subaru Legacy AUTOMOBILES
Component location diagrams for most 1991 Subaru Legacy cars and light trucks sold in the U.S. from 1990+.
 Luggage/Trunk Room Component Locations Diagram for 1991 Subaru Legacy LSI 2.2 H4 GASComponents on diagram: |
 Interior Component Locations Diagram for 1991 Subaru Legacy LS SP 2.2 H4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 1991 Subaru Legacy AUTOMOBILES
OEM drawn wiring diagrams for most 1991 Subaru Legacy cars and light trucks sold in the U.S.
 1991 Subaru Legacy L 2.2 H4 GAS Wiring DiagramComponents on diagram: |
 1991 Subaru Legacy L 2.2 H4 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 1991 Subaru Legacy AUTOMOBILES
OEM TSB listings for most 1991 Subaru Legacy cars and light trucks sold in the U.S. from 1985+.
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Document: Turbocharger Mesh Filter Screen Vehicle: 1991 Subaru Legacy Sport 2.2 H4 GAS Auto Systems: |
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Document: REMANUFACTURED TRANSAXLES PROGRAM - REVISED Vehicle: 1991 Subaru Legacy L 2.2 H4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 1991 Subaru Legacy AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 1991 Subaru Legacy 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 1991 Subaru Legacy 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 1991 Subaru Legacy 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 1991 Subaru Legacy 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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