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2004 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
- Cabin Air Filter Locations & 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 2004 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 2004 Subaru Legacy AUTOMOBILES
Imported Cars & Light Trucks & Vans -> 2003-04 -> System Inspection -> Compressor -> Condenser -> Evaporator -> Receiver-Drier/Accumulator -> Refrigerant Line Restrictions -> Thermostatic Expansion Valve
Vehicle: 2004 Subaru Legacy 2.5 H4 GAS
While a detailed diagnostic procedure for all air conditioning systems would be impractical due to the many variations in construction and operation, there are three fundamental components of a total diagnosis:
- Refrigerant systems must have an adequate, but not excessive charge.
- Determination must be made whether the refrigerant system is governed by a cycling clutch compressor or by valves which control evaporator pressure.
- The air distribution system (blower motor, switches, vacuum lines and air ducts) must be operational before checking the ...
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BRAKE SERVICE PROCEDURES FOR 2004 Subaru Legacy AUTOMOBILES
Subaru -> Disc Brakes -> Tightening Specifications
Vehicle: 2004 Subaru Legacy 2.5 H4 GAS
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Subaru Legacy AUTOMOBILES
Subaru -> Fuel Filter Replacement -> Except Justy w/Carbureted Engine -> Fuel System Pressure Relief -> Removal & Installation
Vehicle: 2004 Subaru Legacy 2.5 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 2004 Subaru Legacy AUTOMOBILES
CV AXLE SHAFT, Replace -> Front -> Rear
Vehicle: 2004 Subaru Legacy 2.5 H4 GAS
Front
- Disconnect battery ground cable.
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove wheel nuts and front wheels.
- Unstake hub nut using suitable tool.
- Remove driveshaft locknut from front hub while depressing brake pedal. Remove wheel before loosening axle nut.
- Remove stabilizer link from front arm.
- Disconnect transverse link from housing.
- Remove spring pin which secures transmission spindle and install new spring upon installation.
- Remove front driveshaft assembly. If driveshaft is hard to remove use suitable puller to aid in removal.
- Remo...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Subaru Legacy AUTOMOBILES
Alternator, Replace
Vehicle: 2004 Subaru Legacy 2.5 H4 GAS
- Disconnect ground cable from battery.
- Disconnect connector and terminal from alternator.
- Remove V-belt covers.
- Remove V-belts.
- Remove bolts which ...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Subaru Legacy AUTOMOBILES
Cabin Air Filter Service -> Subaru -> 1998-2004 Legacy, Outback & 2003-04 Baja
Vehicle: 2004 Subaru Legacy 2.5 H4 GAS
The cabin air filter should be replaced every 12 months or 9,300 ...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 Subaru Legacy AUTOMOBILES
Subaru -> Electronic Brake Force Distribution (EBD) Warning ->
Vehicle: 2004 Subaru Legacy 2.5 H4 GAS
If the Brake System warning lamp and the Anti-Lock Brake System (ABS) warning lamp illuminate simultaneously while driving the vehicle, a malfunction in the EBD system is indicated. If both warning lamps illuminate, stop the vehicle in the nearest flat safe place. Turn the engine off and apply the parking brake. Restart the engine and release the parking brake, if both the warning lamp...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Subaru Legacy AUTOMOBILES
Radiator, Replace
Vehicle: 2004 Subaru Legacy 2.5 H4 GAS
- Remove battery from vehicle.
- Remove engine splash shield/under cover.
- Drain engine coolant into suitable container.
- On models equipped with turbocharger, remove hoses attached to coolant filler tank, then filler tank and bracket.
- On models equipped with automatic transaxle,remove AFT cooler lines from radiator.
- On all models, disc...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Subaru Legacy AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Subaru Legacy 2.5 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 2004 Subaru Legacy AUTOMOBILES
Component location diagrams for most 2004 Subaru Legacy cars and light trucks sold in the U.S. from 1990+.
 Electrical Components Diagram for 2004 Subaru Legacy 2.5 H4 GASComponents on diagram: |
 Solenoid Valve And Switch Diagram for 2004 Subaru Legacy 2.5 H4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2004 Subaru Legacy AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Subaru Legacy cars and light trucks sold in the U.S.
 2004 Subaru Legacy 2.5 H4 GAS Wiring DiagramComponents on diagram: |
 2004 Subaru Legacy 2.5 H4 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Subaru Legacy AUTOMOBILES
OEM TSB listings for most 2004 Subaru Legacy cars and light trucks sold in the U.S. from 1985+.
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Document: Service Manual Corrections Vehicle: 2004 Subaru Legacy 2.5 H4 GAS Auto Systems: |
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Document: EVAPORATIVE EMISSION SYSTEM DIAGNOSTIC
INFORMATION Vehicle: 2004 Subaru Legacy 2.5 H4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Subaru Legacy AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 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 2004 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 2004 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 2004 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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