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2004 Subaru Impreza 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
- 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
- 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 Impreza 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 Impreza automobile. Try the Automotix DIY solution today!
A/C & HEATER SERVICE PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Air Bag System Precautions -> Subaru -> Arming
Vehicle: 2004 Subaru Impreza RS 2.5 H4 GAS
- With ignition Off, connect battery positive cable, then battery ground cable.
- Wait at least 20 seconds.
- From a safe location at sides of or ...
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BRAKE SERVICE PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Subaru -> Disc Brakes -> Brake Pad Service -> Front -> Rear
Vehicle: 2004 Subaru Impreza Outback 2.5 H4 GAS
Front
- Raise and support vehicle.
- Remove front wheels.
- Disconnect brake hose from strut.
- Remove caliper lockpin, then rotate caliper on guide pin, Figs. through .
- Remove brake pads from support.
- Reverse procedure to install noting the following:
- Push piston into caliper body. When piston is difficult to insert, loosen the air bleeder, then push into place.
- Refer to Figs. through for tightening values.
- After completing installation, depress brake pedal several times to seat brake pads against rotor. If pedal stroke is excessive, bleed hydraulic ...
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FUEL FILTER REPLACEMENT PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Subaru -> Component Locations -> 1990-03 Legacy, 1993-04 Impreza (Except WRX STi), 1998-04 Forester & 2000-03 Outback w/1.8L, 2.2L, 2.5L & 3.0L Engines
Vehicle: 2004 Subaru Impreza RS 2.5 H4 GAS
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DRIVELINE, U-JOINT & CV AXLES REPLACEMENT PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
DRIVESHAFT, Replace
Vehicle: 2004 Subaru Impreza WRX 2.0 H4 GAS
Wrap metal parts with a cloth or rubber material. Rubber boot may be damaged due to interference with adjacent metal parts during removal.
- Disconnect battery ground cable.
- Place vehicle in neutral.
- Release parking brake.
- Raise and support vehicle and support it with safety stands in proper locations.
- Remove rear exhaust pipe and muffler.
- Remove rear differential protector, if equipped.
- Remove heat shield cover.
- Remove differential front cover bolts, then remove mount.
- Place reference mark on front driveline and rear differential flange. Paint is recommended for match marks. Never dam...
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STARTER & ALTERNATOR REPLACEMENT PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Starter, Replace
Vehicle: 2004 Subaru Impreza WRX 2.0 H4 GAS
- Disconnect battery ground cable.
- Disconnect solenoid wiring at starter.
- Remo...
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CABIN AIR FILTER LOCATIONS & REPLACEMENT PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Cabin Air Filter Service -> Subaru -> 2004-07 Impreza
Vehicle: 2004 Subaru Impreza TS 2.5 H4 GAS
The cabin air filter should be replaced every 12 months or 7,500 miles.
- Remove nine the glove compartment retaining screws, the glove compartment, Fig. .
- Remove the cabin air filter cover, Fig. .
- Remove the cabin...
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MAINTENANCE LAMP RESET PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Subaru -> Anti-Lock Brake System (ABS)/Traction Control System (TCS) Indicator -> 2000-04 Impreza
Vehicle: 2004 Subaru Impreza Outback 2.5 H4 GAS
The Anti-Lock Brake System (ABS) indicator lamp should illuminate for a few as a bulb check when the ignition Switch is placed in the On position. If the lamp remains illuminated or comes on while driving the vehicle or is blinking, a fault in the ABS has been detected. After diagnosis and repair are completed, the DTCs can be cleared as follows:
- Take diagnostic connector out from ...
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RADIATOR & HOSE REPLACEMENT PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Heater Hose, Replace -> Inlet -> Outlet
Vehicle: 2004 Subaru Impreza TS 2.5 H4 GAS
Inlet
- Disconnect battery ground cable.
- Drain cooling system into a suitable container by loosening drain plug of radiator.
- Reposition hose clamp at heater core.
- Remove hose from heater core.
- Reposition hose clamp at cylinder head.
- Remove hose from cylinder head.
- Remove hose from vehicle.
- Reverse procedur...
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SERPENTINE BELT SERVICE PROCEDURES FOR 2004 Subaru Impreza AUTOMOBILES
Serpentine Drive Belt, Replace
Vehicle: 2004 Subaru Impreza TS 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 Impreza AUTOMOBILES
Component location diagrams for most 2004 Subaru Impreza cars and light trucks sold in the U.S. from 1990+.
 Engine Components Diagram for 2004 Subaru Impreza Outback 2.5 H4 GASComponents on diagram: |
 Engine Wiring Harness And Transmission Cord Diagram for 2004 Subaru Impreza Outback 2.5 H4 GASComponents on diagram: |
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WIRING DIAGRAMS FOR 2004 Subaru Impreza AUTOMOBILES
OEM drawn wiring diagrams for most 2004 Subaru Impreza cars and light trucks sold in the U.S.
 2004 Subaru Impreza TS 2.5 H4 GAS Wiring DiagramComponents on diagram: |
 2004 Subaru Impreza Outback 2.5 H4 GAS Wiring DiagramComponents on diagram: |
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TECHNICAL SERVICE BULLETINS FOR 2004 Subaru Impreza AUTOMOBILES
OEM TSB listings for most 2004 Subaru Impreza cars and light trucks sold in the U.S. from 1985+.
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Document: EVAPORATIVE EMISSION SYSTEM DIAGNOSTIC
INFORMATION Vehicle: 2004 Subaru Impreza Outback 2.5 H4 GAS Auto Systems: |
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Document: Turbocharger Mesh Filter Screen Vehicle: 2004 Subaru Impreza WRX 2.0 H4 GAS Auto Systems: |
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COMPONENT/PARTS SPECIFICATIONS FOR 2004 Subaru Impreza AUTOMOBILES
BRAKE SPECIFICATIONS: Brake drum, rotor, caliper, and related specifications for most 2004 Subaru Impreza 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 Impreza 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 Impreza 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 Impreza 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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