Subaru Impreza 2001 Repair Service Manual

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🏷️ Basic Information Identification Make: Subaru Model: Impreza Year: 2001 Product Name: Subaru Impreza 2001 Repair Service Manual Product Description: Subaru Impreza 2001 Repair Service Manual - Service Manual Repair PDF Download. Prepared primarily for professional technicians but with adequate data for enthusiasts. 👋 Introduction Market Position Positioning: The Subaru Impreza of this era (2nd generation, GD/GG chassis) was positioned as a compact, sporty, and capable all-wheel-drive vehicle, with the WRX variant being a performance icon in the rally-inspired sedan market. Competitive Analysis Competitors: Competed with vehicles like Mitsubishi Lancer, Honda Civic Si, Volkswagen Golf GTI, and Ford Focus. Key Features All Wheel Drive: Standard Symmetrical All-Wheel Drive (SAWD) system, a hallmark of Subaru, providing excellent traction and stability in various conditions. Performance Variants: Availability of high-performance WRX models with turbocharged engines and sport-tuned suspensions. Practicality: Offered in both sedan and wagon (outback sport/sport wagon) body styles, providing versatility for different needs. Manual Purpose Purpose: To provide comprehensive technical information for diagnosing, repairing, and maintaining the 2001 Subaru Impreza, empowering both professional technicians and dedicated enthusiasts. 📋 Manual Details Coverage Areas Primary Coverage: Mechanical, Electrical, Body, Diagnostics, Maintenance, Repair Page Count Estimated Page Count: 1500-2000 (Estimate based on typical factory service manuals for this era) Manual Type Type: Factory Service Manual (FSM) Language Language: English Format Format: PDF Download 📖 Manual Coverage Systems Covered Engine: Detailed diagnostics, repair procedures, component specifications for EJ251 (2.5L SOHC) and EJ205 (2.0L Turbocharged DOHC - WRX models) engines. Transmission: Manual (5-speed), Automatic (4-speed) transmission disassembly, assembly, adjustments, diagnostics, and fluid specifications. Drivetrain: All-Wheel Drive (AWD) system: differentials (front, center, rear), driveshafts, CV joints, hub bearings, maintenance, and repair. Suspension: Front and rear suspension: struts, springs, control arms, sway bars, bushings, alignment specifications, component replacement. Brakes: Front and rear brake systems: disc brakes, calipers, pads, rotors, master cylinder, brake lines, ABS system diagnostics and components. Steering: Power steering system: pump, reservoir, lines, rack and pinion, steering column, tie rods, wheel alignment. Electrical: Complete electrical schematics, wiring diagrams, fuse and relay locations, battery, charging system, starter, lighting, power windows, locks, wipers, HVAC controls, ECU diagnostics. Body: Exterior and interior body panels, doors, hood, trunk, bumpers, glass, trim, seat removal, sound deadening. HVAC: Heating, Ventilation, and Air Conditioning: A/C compressor, refrigerant, condenser, evaporator, blower motor, controls, troubleshooting. Fuel System: Fuel pump, fuel injectors, fuel filter, fuel pressure regulator, evaporative emissions (EVAP) system. Cooling System: Radiator, thermostat, water pump, coolant hoses, fan clutch/electric fan, expansion tank, flush and refill procedures. Exhaust System: Exhaust manifold, catalytic converter, muffler, exhaust pipes, oxygen sensors. Procedures Included Maintenance: Oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, fluid flushes (coolant, brake, transmission, differential), tire rotation, brake pad inspection/replacement, battery testing. Repair: Engine overhaul, cylinder head gasket replacement, clutch replacement, turbocharger replacement (WRX), transmission rebuild, brake caliper/rotor replacement, suspension component replacement, starter/alternator replacement. Diagnostics: Troubleshooting guides for common symptoms, DTC (Diagnostic Trouble Code) lookup and interpretation, starting system, charging system, fuel system, ignition system diagnostics, ABS system diagnostics. Adjustments: Parking brake adjustment, clutch pedal adjustment, idle speed adjustment (older models), wheel alignment procedures. Troubleshooting: Systematic approaches to diagnose issues like poor starting, rough idle, overheating, braking problems, electrical malfunctions. Technical Depth Depth: Comprehensive, covering from basic preventative maintenance to complete engine and transmission rebuilds, including detailed electrical schematics and diagnostic procedures. Target Audience: Professional Automotive Technicians, Advanced DIY Mechanics, Enthusiasts seeking in-depth repair knowledge. 📊 Manual Specifications File Format Format: Digital PDF Searchability: Text-searchable PDF for quick information retrieval. Print Quality Quality: High-resolution scans of original factory documentation, ensuring clarity of text and diagrams. Binding Type Binding: Not Applicable (Digital Download) Paper Type Paper: Not Applicable (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code Na: EJ251 Engine Displacement Na: 2.5 Liters (2457 cc) Engine Type Na: Naturally Aspirated, Horizontally Opposed (Boxer), SOHC, 16-valve, 4-cylinder Bore X Stroke Na: 99.5 mm x 79.0 mm Compression Ratio Na: 9.7:1 Horsepower Na: 165 hp @ 5,600 rpm Torque Na: 166 lb-ft @ 4,000 rpm Turbo Engine Engine Code Turbo: EJ205 (for WRX models) Engine Displacement Turbo: 2.0 Liters (1994 cc) Engine Type Turbo: Turbocharged, Horizontally Opposed (Boxer), DOHC, 16-valve, 4-cylinder Horsepower Turbo: 227 hp @ 5,600 rpm (WRX) Torque Turbo: 217 lb-ft @ 4,000 rpm (WRX) Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Unleaded gasoline (87 octane minimum for NA, 91 octane recommended for WRX) Ignition System Ignition Type: Distributorless Ignition System (DIS) with Coil-on-Plug (COP) or Coil-Near-Plug (CNP) depending on specific sub-model/engine. 🔧 Transmission Standard Type Na: 5-Speed Manual Transmission (MY5F) Type Auto: 4-Speed Automatic Transmission (4EAT) AWD System: Symmetrical All-Wheel Drive (SAWD) with center differential and viscous coupling for manual transmissions, Active All-Wheel Drive for automatic transmissions. Features Clutch Type: Dry, single plate, hydraulically actuated clutch (manual) Fluid Specs Manual Transmission Fluid: Subaru Extra-S Gear Oil (or equivalent...

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Description

🏷️ Basic Information

Identification

Make:

Subaru

Model:

Impreza

Year:

Product Name:

Subaru Impreza 2001 Repair Service Manual

Product Description:

Subaru Impreza 2001 Repair Service Manual - Service Manual Repair PDF Download. Prepared primarily for professional technicians but with adequate data for enthusiasts.

👋 Introduction

Market Position

Positioning:

The Subaru Impreza of this era (2nd generation, GD/GG chassis) was positioned as a compact, sporty, and capable all-wheel-drive vehicle, with the WRX variant being a performance icon in the rally-inspired sedan market.

Competitive Analysis

Competitors:

Competed with vehicles like Mitsubishi Lancer, Honda Civic Si, Volkswagen Golf GTI, and Ford Focus.

Key Features

All Wheel Drive:

Standard Symmetrical All-Wheel Drive (SAWD) system, a hallmark of Subaru, providing excellent traction and stability in various conditions.

Performance Variants:

Availability of high-performance WRX models with turbocharged engines and sport-tuned suspensions.

Practicality:

Offered in both sedan and wagon (outback sport/sport wagon) body styles, providing versatility for different needs.

Manual Purpose

Purpose:

To provide comprehensive technical information for diagnosing, repairing, and maintaining the 2001 Subaru Impreza, empowering both professional technicians and dedicated enthusiasts.

📋 Manual Details

Coverage Areas

Primary Coverage:

Mechanical, Electrical, Body, Diagnostics, Maintenance, Repair

Page Count

Estimated Page Count:

1500-2000 (Estimate based on typical factory service manuals for this era)

Manual Type

Type:

Factory Service Manual (FSM)

Language

Language:

English

Format

Format:

PDF Download

📖 Manual Coverage

Systems Covered

Engine:

Detailed diagnostics, repair procedures, component specifications for EJ251 (2.5L SOHC) and EJ205 (2.0L Turbocharged DOHC - WRX models) engines.

Transmission:

Manual (5-speed), Automatic (4-speed) transmission disassembly, assembly, adjustments, diagnostics, and fluid specifications.

Drivetrain:

All-Wheel Drive (AWD) system: differentials (front, center, rear), driveshafts, CV joints, hub bearings, maintenance, and repair.

Suspension:

Front and rear suspension: struts, springs, control arms, sway bars, bushings, alignment specifications, component replacement.

Brakes:

Front and rear brake systems: disc brakes, calipers, pads, rotors, master cylinder, brake lines, ABS system diagnostics and components.

Steering:

Power steering system: pump, reservoir, lines, rack and pinion, steering column, tie rods, wheel alignment.

Electrical:

Complete electrical schematics, wiring diagrams, fuse and relay locations, battery, charging system, starter, lighting, power windows, locks, wipers, HVAC controls, ECU diagnostics.

Body:

Exterior and interior body panels, doors, hood, trunk, bumpers, glass, trim, seat removal, sound deadening.

HVAC:

Heating, Ventilation, and Air Conditioning: A/C compressor, refrigerant, condenser, evaporator, blower motor, controls, troubleshooting.

Fuel System:

Fuel pump, fuel injectors, fuel filter, fuel pressure regulator, evaporative emissions (EVAP) system.

Cooling System:

Radiator, thermostat, water pump, coolant hoses, fan clutch/electric fan, expansion tank, flush and refill procedures.

Exhaust System:

Exhaust manifold, catalytic converter, muffler, exhaust pipes, oxygen sensors.

Procedures Included

Maintenance:

Oil changes, filter replacements (oil, air, fuel, cabin), spark plug replacement, fluid flushes (coolant, brake, transmission, differential), tire rotation, brake pad inspection/replacement, battery testing.

Repair:

Engine overhaul, cylinder head gasket replacement, clutch replacement, turbocharger replacement (WRX), transmission rebuild, brake caliper/rotor replacement, suspension component replacement, starter/alternator replacement.

Diagnostics:

Troubleshooting guides for common symptoms, DTC (Diagnostic Trouble Code) lookup and interpretation, starting system, charging system, fuel system, ignition system diagnostics, ABS system diagnostics.

Adjustments:

Parking brake adjustment, clutch pedal adjustment, idle speed adjustment (older models), wheel alignment procedures.

Troubleshooting:

Systematic approaches to diagnose issues like poor starting, rough idle, overheating, braking problems, electrical malfunctions.

Technical Depth

Depth:

Comprehensive, covering from basic preventative maintenance to complete engine and transmission rebuilds, including detailed electrical schematics and diagnostic procedures.

Target Audience:

Professional Automotive Technicians, Advanced DIY Mechanics, Enthusiasts seeking in-depth repair knowledge.

📊 Manual Specifications

File Format

Format:

Digital PDF

Searchability:

Text-searchable PDF for quick information retrieval.

Print Quality

Quality:

High-resolution scans of original factory documentation, ensuring clarity of text and diagrams.

Binding Type

Binding:

Not Applicable (Digital Download)

Paper Type

Paper:

Not Applicable (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Code Na:

EJ251

Engine Displacement Na:

2.5 Liters (2457 cc)

Engine Type Na:

Naturally Aspirated, Horizontally Opposed (Boxer), SOHC, 16-valve, 4-cylinder

Bore X Stroke Na:

99.5 mm x 79.0 mm

Compression Ratio Na:

9.7:1

Horsepower Na:

165 hp @ 5,600 rpm

Torque Na:

166 lb-ft @ 4,000 rpm

Turbo Engine

Engine Code Turbo:

EJ205 (for WRX models)

Engine Displacement Turbo:

2.0 Liters (1994 cc)

Engine Type Turbo:

Turbocharged, Horizontally Opposed (Boxer), DOHC, 16-valve, 4-cylinder

Horsepower Turbo:

227 hp @ 5,600 rpm (WRX)

Torque Turbo:

217 lb-ft @ 4,000 rpm (WRX)

Fuel System

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Fuel Type:

Unleaded gasoline (87 octane minimum for NA, 91 octane recommended for WRX)

Ignition System

Ignition Type:

Distributorless Ignition System (DIS) with Coil-on-Plug (COP) or Coil-Near-Plug (CNP) depending on specific sub-model/engine.

🔧 Transmission

Standard

Type Na:

5-Speed Manual Transmission (MY5F)

Type Auto:

4-Speed Automatic Transmission (4EAT)

AWD System:

Symmetrical All-Wheel Drive (SAWD) with center differential and viscous coupling for manual transmissions, Active All-Wheel Drive for automatic transmissions.

Features

Clutch Type:

Dry, single plate, hydraulically actuated clutch (manual)

Fluid Specs

Manual Transmission Fluid:

Subaru Extra-S Gear Oil (or equivalent API GL-5 75W-90)

Automatic Transmission Fluid:

Subaru ATF-HP (or equivalent Dexron III compatible fluid)

📐 Dimensions

Exterior

Length Sedan:

Approx. 4410 mm (173.6 inches)

Width Sedan:

Approx. 1700 mm (66.9 inches)

Height Sedan:

Approx. 1410 mm (55.5 inches)

Wheelbase:

Approx. 2515 mm (99.0 inches)

Track Width Front:

Approx. 1465 mm (57.7 inches)

Track Width Rear:

Approx. 1460 mm (57.5 inches)

Length Wagon:

Approx. 4465 mm (175.8 inches)

Height Wagon:

Approx. 1465 mm (57.7 inches)

Weights

Curb Weight Sedan Na:

Approx. 1300-1350 kg (2866-2976 lbs)

Curb Weight Sedan Wrx:

Approx. 1300-1350 kg (2866-2976 lbs)

Gross Vehicle Weight Rating:

Varies by model and trim

Towing Capacity:

Not typically specified or recommended for this model

Wheelbase Wagon:

Approx. 2515 mm (99.0 inches)

Cargo

Cargo Volume Sedan:

Approx. 12.6 cu ft

Cargo Volume Wagon:

Approx. 37.1 cu ft (with rear seats up)

Wheels Tires

Wheel Bolt Pattern:

5 x 100 mm

Standard Tire Size Na:

205/55R16

Standard Tire Size Wrx:

205/55R16 (WRX), 205/50R17 optional on later 2001 models or WRX STi

Standard Wheel Size:

16 x 6.5 inches

🛡️ Safety Features

Ratings

NHTSA Front Driver Side:

4/5 stars

NHTSA Front Passenger Side:

4/5 stars

IIHS Front Offset Crash Test:

Active Features

Standard Anti-lock Braking System (ABS)

Symmetrical All-Wheel Drive (SAWD) for enhanced traction and stability

Passive Features

Airbags:

Driver and front passenger airbags

Seatbelts:

Front seat pretensioner seatbelts, three-point rear seatbelts

Child Anchors:

LATCH (Lower Anchors and Tethers for Children) system

💡 Technology Features

Infotainment

Head Unit:

Base models featured a standard AM/FM/CD or cassette player. Optional premium audio systems were available. Aftermarket head unit installation information is usually not in FSMs, but wiring diagrams are essential for integration.

Driver Assistance

Traction Control:

Traction control systems were not standard on all trims for this model year, but ABS was common.

Cruise Control:

Cruise control was an available feature on most models.

Connectivity

Bluetooth:

Bluetooth connectivity was not available on factory systems for this model year.

Electronics

ECU Type:

Engine Control Unit (ECU) models vary by engine and market. Manual provides specific part numbers and diagnostic procedures.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Every 3,000-7,500 miles (10,000 km) or 6-12 months, depending on driving conditions and oil type (refer to manual for specifics).

Air Filter Replacement:

Every 15,000-30,000 miles (24,000-48,000 km) or as needed based on inspection.

Cabin Air Filter Replacement:

Every 15,000-20,000 miles (24,000-32,000 km)

Spark Plug Replacement Na:

Approx. 60,000-100,000 miles (96,000-160,000 km) for iridium-tipped plugs.

Coolant Replacement:

Every 30,000 miles (48,000 km) or 2 years for conventional coolant, longer for Subaru Super Coolant.

Timing Belt Replacement:

Crucial: Every 90,000-105,000 miles (144,000-168,000 km) or 7-10 years due to SOHC engine interference design. (WRX models also require timing belt replacement).

Fluid Specifications

Engine Oil Type:

SAE 5W-30 (API SG, SH, SJ, SL, or ILSAC GF-2 or GF-3)

Engine Oil Capacity Na:

Approx. 4.5 US quarts (4.3 L) with filter

Engine Oil Capacity Wrx:

Approx. 4.5 US quarts (4.3 L) with filter (EJ205)

Coolant Type:

Subaru Anti-freeze/Coolant (Blue) or equivalent ethylene glycol-based coolant with Subaru's specific additive package

Brake Fluid Type:

DOT 3 or DOT 4

Power Steering Fluid:

Subaru Genuine Power Steering Fluid (or equivalent Dexron III compatible)

Known Issues

Head Gaskets:

While less prevalent than on earlier EJ22/EJ25 engines, the EJ251 SOHC engine can still experience head gasket failures, particularly under high heat or stress. The manual will detail diagnostic and replacement procedures.

Wheel Bearings:

Front wheel bearings can be prone to wear, leading to humming or grinding noises. Manual covers replacement procedures.

Cv Axles:

Front CV axle boots can tear, leading to grease loss and potential joint failure. Manual provides replacement steps.

Clutch Wear:

Clutch wear is normal, but early failure can sometimes be linked to improper use or hydraulic system issues. Manual covers replacement and bleeding.

Turbo Failure Wrx:

EJ205 turbochargers can experience wear or failure if not properly maintained or if oil supply is compromised. Manual covers diagnostics and replacement.

Oil Leaks:

Valve cover gaskets and oil pan gaskets can degrade and leak over time. Manual details replacement.

📚 Vehicle History

Brand Heritage

Subaru Legacy Connection:

The Impreza platform shared many components and design philosophies with its larger sibling, the Subaru Legacy.

Model Evolution

First Generation:

First introduced globally in 1992, replacing the Subaru Leone.

Second Generation Launch:

The second generation (GD/GG chassis) was launched in 2000 for the 2001 model year, featuring a significant redesign.

Design Influence:

This generation saw the introduction of the controversial 'bug eye' headlights for the early models, later updated in subsequent facelifts.

Wrx Significance:

The WRX model gained significant popularity due to its rally racing heritage and accessible performance.

Production

Production Locations:

Primarily manufactured in Japan by Subaru Corporation (formerly Fuji Heavy Industries).

🏆 Awards & Recognition

Recognitions

Car And Driver Best 10:

The Impreza WRX often appeared on Car and Driver's 10Best lists in subsequent years due to its performance credentials.

Rally Heritage:

The Impreza lineage is deeply tied to Subaru's success in the World Rally Championship (WRC), enhancing its reputation for durability and performance.