🏷️ Basic Information

Make:

Subaru

Model:

RX

Model Years Covered:

1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994

Model Variant:

RX

Chassis Codes:

Likely variations of the Subaru Leone/Loyale platform, though specific 'RX' chassis codes may vary by market and trim. Common chassis codes for this era Leone/Loyale include A10, A20, A30, A40 depending on body style (sedan, coupe, wagon, hatchback).

👋 Introduction

Market Niche:

The Subaru RX was positioned as a performance-oriented variant of the Subaru Leone/Loyale line, often featuring sportier styling and potentially enhanced engine output or drivetrain components for its era. It appealed to drivers seeking a more engaging driving experience within Subaru's practical lineup.

Competitors:

Competed with other compact performance sedans and coupes of the late 80s and early 90s, such as certain Mitsubishi Galant, Nissan Stanza/NX, Toyota Corolla GT-S, and potentially entry-level European models depending on specific market positioning and pricing.

Distinctive Attributes:

The 'RX' designation typically implied sportier suspension tuning, more aggressive body styling (e.g., unique wheels, spoilers), and potentially upgraded engine options or exhaust systems compared to standard models. Subaru's signature Symmetrical All-Wheel Drive was often a key differentiator.

AWD Capability:

The integration of Subaru's renowned Symmetrical All-Wheel Drive system in the RX model offered superior traction and stability, a key selling point that this manual will fully detail in terms of maintenance and repair of the drivetrain components.

📋 Manual Details

Primary Coverage:

Workshop Repair and Service

Secondary Coverage:

Maintenance, Troubleshooting, Diagnostics, Overhauls

Estimated Pages:

Over 1000 pages (typical for comprehensive workshop manuals of this era)

Type:

Workshop Repair Service Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine:

Engine overhaul, assembly, disassembly, cooling system, lubrication system, fuel injection/carburetion, ignition system, emissions control, timing belt/chain replacement, component testing.

Transmission:

Manual and automatic transmission repair, overhaul, fluid changes, clutch system, driveshafts, differentials, 4WD/AWD system (if applicable to RX variant).

Brakes:

Brake system diagnosis, repair, fluid replacement, caliper and wheel cylinder service, parking brake system, ABS (if equipped).

Suspension Steering:

Front and rear suspension components, shock absorbers, struts, springs, ball joints, tie rods, steering gearbox/rack and pinion, power steering system.

Electrical:

Wiring diagrams, battery, charging system (alternator, starter), lighting system, instrument cluster, ignition system, starter motor, power windows, power locks, fuse box, relays, ECU/ECM diagnosis and testing (if applicable).

Body Chassis:

Body panel removal/installation, door mechanisms, glass replacement, interior trim, chassis lubrication, underbody components, exhaust system, fuel tank, body sealing.

Fuel System:

Fuel pump, fuel lines, fuel filter replacement, fuel tank service, carburetor troubleshooting and adjustment (if applicable), EFI system components (injectors, pressure regulator), emission controls.

Cooling System:

Radiator, hoses, thermostat, water pump replacement, fan operation, coolant flush and fill procedures, pressure testing.

Exhaust System:

Muffler, catalytic converter, exhaust pipes, hangers, heat shields, oxygen sensor replacement (if equipped). Diagnosis of exhaust leaks.

Climate Control:

Heater core, blower motor, A/C system (if equipped), refrigerant charging (though often handled by specialists), ducting, controls, and troubleshooting.

Maintenance:

Scheduled maintenance, oil changes, filter replacements, tune-ups, fluid checks and top-offs, belt inspections and replacement, spark plug replacement.

Troubleshooting:

Diagnostic charts, symptom-based troubleshooting, common problem identification and solutions, electrical system diagnostics.

Repair:

Step-by-step repair procedures for all major vehicle systems, component removal and installation, reassembly instructions, specifications for torque, clearances, and alignments.

Diagnostics:

Component testing procedures, diagnostic trouble codes (DTCs) if applicable, electrical testing methods, pressure testing.

Body Repair:

Door panel removal, window regulator repair, lock mechanism servicing, exterior trim replacement, bumper repair/replacement, rust prevention and repair guidance.

Interior Trim:

Seat removal, dashboard disassembly, center console repair, headliner replacement, carpet replacement, and insulation.

Wheel Tire:

Tire changing and balancing, wheel alignment procedures, wheel bearing replacement, lug nut torque specifications, wheel bolt pattern details.

Diagnostic Charts:

Flowcharts and tables to help diagnose common problems based on symptoms, covering engine performance, electrical issues, and drivability concerns.

Depth:

Comprehensive - covers everything from basic maintenance to full engine and transmission rebuilds. Includes detailed specifications, diagrams, and troubleshooting guides suitable for professional technicians and advanced DIY enthusiasts.

📊 Manual Specifications

File Type:

PDF

Searchability:

Likely searchable text, allowing for quick access to specific information.

Compatibility:

Compatible with any device that can open PDF files, including computers, tablets, and smartphones.

Download Details:

Instant download upon purchase, providing immediate access to repair and maintenance information.

Print Readability:

High quality scans or digital creation, ensuring clear text and legible diagrams.

Binding:

N/A (Digital PDF format)

Paper Quality:

N/A (Digital PDF format)

⚙️ Engine Specifications

Engine Type:

Naturally aspirated Boxer (Flat) engine. Specific displacement likely in the 1.8L to 2.7L range for this era, depending on the exact RX variant. Common engines for the Leone/Loyale platform included the EA82 (1.8L) and EJ series (early EJ18, EJ22).

Engine Configuration:

Horizontally opposed (Boxer) cylinders, typically 4-cylinder. This provides a lower center of gravity for improved handling.

Horsepower:

Varies by year and specific engine. For the EA82, typically 90-100 hp. Later EJ series engines could offer more, potentially 100-130 hp for naturally aspirated versions. Turbocharged RX variants, if available, would have higher output.

Torque:

Varies by year and specific engine. Expect figures in the range of 100-130 lb-ft for the 1.8L EA82, increasing with larger displacements or turbocharging.

Fuel Delivery:

Early models may feature carburetor(s), while later models (especially from the late 1980s onward) transitioned to Electronic Fuel Injection (EFI) or Multi-Point Fuel Injection (MPFI).

Engine Codes:

Likely to include EA82 (for 1.8L naturally aspirated and turbocharged) or early EJ series (EJ18, EJ22) engines. Specific designation for the RX variant might be an internal Subaru code.

Turbocharged Options:

Some 'RX' variants of Subaru models from this era may have featured turbocharged engines (e.g., turbocharged EA82), offering significantly enhanced performance. This manual would cover these specific turbocharged engine systems.

🔧 Transmission

Transmission Type:

Manual transmission typically standard, often with 5 speeds. Subaru's Symmetrical All-Wheel Drive system was usually integrated with manual transmissions.

Transmission Type Optional:

Automatic transmission, likely a 3-speed or 4-speed unit, may have been available as an option, often with AWD capabilities.

Drivetrain:

Symmetrical All-Wheel Drive (AWD) is a hallmark of Subaru. The RX variant would almost certainly feature this, likely with a viscous coupling center differential. Some models may have offered a full-time AWD system or a selectable low-range gear depending on trim.

Manual Transmission Fluid:

Typically GL-4 rated gear oil. Specific viscosity (e.g., 75W-90 or 80W-90) would be detailed in the manual. Capacity around 2.5 - 3.0 liters.

Automatic Transmission Fluid:

Likely Dexron-II or equivalent. Capacity around 3.5 - 4.5 liters. Specific type and change interval would be crucial for longevity.

📐 Dimensions

Body Styles:

Likely available as a 2-door Coupe, 4-door Sedan, and 4-door Wagon. The 'RX' designation may have been applied to specific body styles or performance trims.

Wheelbase:

Varies by body style and generation. For the Leone/Loyale platform, typical wheelbases range from approximately 96.5 inches (2450 mm) to 104.3 inches (2650 mm).

Track Width:

Specifics would depend on body style and trim, but generally comparable to other vehicles in its class. The manual will detail front and rear track dimensions for alignment purposes.

Ground Clearance:

While not a dedicated off-roader, Subaru models of this era generally offered decent ground clearance for their class, especially AWD variants. Specific measurements would be detailed in the manual.

Curb Weight:

Likely in the range of 2,400 to 3,000 lbs (1088 to 1360 kg) depending on body style, engine, and drivetrain (AWD adds weight).

Gross Vehicle Weight Rating:

Will be specified in the manual, typically around 3,500 to 4,000 lbs (1588 to 1814 kg).

🛡️ Safety Features

Crash Test Data:

Limited comprehensive crash test data available from official agencies (like NHTSA) for this specific model/era due to testing standards at the time. The manual may offer structural integrity information from Subaru's internal testing.

Braking System:

Front disc brakes, rear drum brakes were common. Higher trims or specific RX models might have featured front and rear disc brakes. ABS (Anti-lock Braking System) was an available option on some later models.

Restraints:

Seat belts (lap and shoulder belts) were standard. Airbags were not commonly available or standard on most Subaru models of this vintage, but some later RX variants might have been equipped with driver-side airbags.

💡 Technology Features

Audio System:

Basic AM/FM radio with cassette player was standard. Optional premium sound systems with more speakers might have been available. Manual covers basic diagnostics and replacement of audio components.

ABS Availability:

Anti-lock Braking System (ABS) was an optional feature on later models within this range, typically limited to higher trim levels or specific markets. The manual will detail ABS system components, diagnosis, and troubleshooting.

Connectivity Features:

Limited by the era. No advanced Bluetooth or USB connectivity. Manual might cover basic wiring for aftermarket accessories.

🔧 Maintenance

Oil Change Interval:

Typically every 3,000 - 5,000 miles or 3-6 months, depending on driving conditions. Manual will specify based on oil type (mineral vs. synthetic) and usage.

Timing Belt Replacement:

Critical for Boxer engines. Intervals typically 60,000 to 90,000 miles (96,000 to 145,000 km) or 5-7 years. Failure can cause severe engine damage. Manual will provide exact interval and procedure.

Spark Plug Replacement:

Every 30,000 - 60,000 miles, depending on spark plug type (copper vs. platinum). Manual will list correct spark plug part numbers and gap.

Engine Oil Type:

API Service SG or higher. Viscosity grades commonly 10W-30 or 10W-40. Manual will provide detailed specifications and capacities.

Coolant Type:

Ethylene glycol-based antifreeze. Typically a 50/50 mix with distilled water. Manual will specify capacity and potential for Subaru-specific coolants.

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid. Manual will specify the required type and any recommendations for flushing.

Power Steering Fluid:

Specific type, likely ATF Dexron-II or a dedicated power steering fluid. Manual will specify the correct fluid and capacity for the power steering system.

Common Problems:

Head gasket leaks (especially on EA82 engines), radiator leaks, carburetor issues (on older models), worn suspension bushings, starter motor issues, rust (particularly in certain climates), clutch wear. The manual will detail diagnostic procedures for these.

Oil Filter Part Number Example:

Examples might include Fram PH5100, Purolator L10000, or Wix 51515 (verify exact fitment in manual or parts catalog).

📚 Vehicle History

Subaru Identity:

Subaru, a division of Subaru Corporation (formerly Fuji Heavy Industries), is known for its pioneering use of All-Wheel Drive in passenger cars, its horizontally opposed Boxer engines, and a reputation for durability and go-anywhere capability, especially in its SUV and rally heritage.

Leone Loyale Lineage:

The Subaru RX is part of the Subaru Leone/Loyale lineage, which was Subaru's compact car offering for several decades. The Leone was produced from 1971 to 1994, with the Loyale nameplate used for later generations in many markets, particularly North America. The RX designation was typically applied to sportier trims or models within this line.

Manufacturing Locations:

Primarily manufactured in Japan by Subaru Corporation (Fuji Heavy Industries). Models sold in North America were often assembled in Japan or potentially at Subaru-Isuzu Automotive (SIA) plant in Lafayette, Indiana, for later model years, though specific RX models might be Japan-only or limited release.

Model Production Span:

The Subaru RX model (as a performance trim or variant) existed within the broader Leone/Loyale production span of 1971-1994. This manual specifically covers the 1984-1994 period, which includes the third and fourth generations of the Leone/Loyale platform.

🏆 Awards & Recognition

Rally Heritage:

While the RX variant itself might not have specific awards, the Subaru Leone platform upon which it is based has a significant rally heritage, contributing to Subaru's reputation for durable and capable vehicles. This manual would be invaluable for maintaining such a vehicle.