1988 Subaru XT & XT6 Service Repair Manual 88

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Basic Information Identification Make: Subaru Model: XT Model Variant: XT6 Year: 1988 Codes Chassis Code: A8 Introduction Market Position Vehicle Segment: Compact/Mid-size Sports Coupe / Personal Luxury Coupe Target Audience:...

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Description

Basic Information
Identification
Make:	Subaru
Model:	XT
Model Variant:	XT6
Year:	1988
Codes
Chassis Code:	A8

Introduction
Market Position
Vehicle Segment:	Compact/Mid-size Sports Coupe / Personal Luxury Coupe
Target Audience:	Enthusiasts seeking a unique, technologically advanced, and capable AWD vehicle for its era.
Competitive Analysis
Competitors:	Considered against vehicles like the Toyota Celica, Nissan 300ZX, Mitsubishi Starion, Honda Prelude.
Key Features
Design Philosophy:	Aerodynamic 'space-age' styling, driver-focused cockpit, advanced all-wheel-drive system.
Unique Selling Points:	Retractable headlights, digital dashboard (on some models), optional advanced AWD system (XT6).

Manual Details
Coverage Areas
Manual Type:	Factory Service Manual / Repair Manual
Language:	English
Format:	Likely Print, Digital (PDF) often available from specialized sellers
Page Count
Estimated Page Count:	Over 1000 pages (typical for a comprehensive factory service manual)

Manual Coverage
Systems Covered
Engine Mechanical:	Full disassembly, assembly, and overhaul procedures for the EA82 (XT) and ER27 (XT6) engines, including cylinder heads, pistons, crankshaft, camshafts, timing belts, lubrication system, cooling system.
Engine Management:	Fuel injection systems (MPI), ignition systems, emissions control systems, diagnostic trouble codes (DTCs), sensor locations and specifications, ECU function.
Transmission:	Manual and Automatic transmission overhaul, repair, and adjustment procedures. Includes transfer case and AWD system specifics.
Drivetrain:	Front and rear differential repair, driveshafts, CV joints, wheel bearings.
Suspension:	Front and rear suspension component replacement and adjustment (struts, shocks, control arms, bushings), alignment specifications.
Brakes:	Front and rear brake system repair (discs, pads, calipers, master cylinder, lines, parking brake), ABS system diagnosis and repair (if equipped).
Steering:	Power steering system repair (pump, rack, hoses), steering column and wheel service.
Electrical System:	Complete wiring diagrams, component locations, fuse box information, battery, charging system (alternator, starter), lighting systems, horn, wipers, power accessories.
HVAC:	Heating, ventilation, and air conditioning system component diagnosis, repair, and refrigerant handling.
Body And Chassis:	Exterior panel removal and installation, interior trim, glass replacement, chassis lubrication points, structural information.
Diagnostics And Troubleshooting:	Detailed diagnostic procedures for all major systems, symptom-based troubleshooting charts, diagnostic trouble code interpretation.
Procedures Included
Maintenance:	Scheduled maintenance intervals, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements, spark plug replacement, belt tensioning.
Repair:	Step-by-step repair instructions for all vehicle components, including engine rebuilds, transmission overhauls, suspension and brake system repairs, electrical component replacement.
Troubleshooting:	Systematic diagnosis and resolution of common and uncommon vehicle problems.
Specifications:	Torque specifications for all fasteners, engine clearances, fluid capacities, diagnostic values, alignment settings.
Wiring Diagrams:	Detailed electrical schematics for all vehicle systems, including component identification and pinouts.
Technical Depth
Depth:	Comprehensive, covering basic maintenance to complete engine and transmission rebuilds, as well as advanced electrical diagnostics.

Manual Specifications
File Format
Digital Format:	If digital, typically PDF, often searchable text.
Print Quality
Print Quality:	Original factory manuals are typically high-quality prints with clear diagrams and text. Digital versions aim to replicate this clarity.
Binding Type
Print Binding:	Originals are often bound for durability (e.g., spiral-bound, hardback).
Paper Type
Print Paper:	Typically on sturdy, glossy or semi-gloss paper to withstand shop use and clearly display diagrams.

Engine Specifications
Primary Engine
Xt Engine:	1.8L SOHC 4-cylinder (EA82)
Xt Engine Code:	EA82
Xt6 Engine:	2.7L SOHC 6-cylinder Boxer (ER27)
Xt6 Engine Code:	ER27
Performance
Xt Horsepower:	Approx. 100-115 hp (depending on variant and fuel injection)
Xt Torque:	Approx. 110-125 lb-ft
Xt6 Horsepower:	Approx. 155 hp
Xt6 Torque:	Approx. 160-165 lb-ft
Fuel System
Xt Fuel System:	Multi-Point Fuel Injection (MPI) or Carbureted (less common for 1988 in major markets)
Xt6 Fuel System:	Multi-Point Fuel Injection (MPI)
Recommended Fuel:	Unleaded Regular Octane (87 AKI recommended, consult manual for specifics)

Transmission
Standard
Xt Transmission Std:	5-speed Manual
Optional
Xt Transmission Opt:	4-speed Automatic (with lock-up torque converter)
Xt6 Transmission Std:	4-speed Automatic (with lock-up torque converter)
Xt6 Transmission Opt:	5-speed Manual
Features
Drivetrain Type:	Symmetrical All-Wheel Drive (AWD) standard on most models. Selectable 2WD/AWD on some early manual transmissions. XT6 typically features permanent AWD.
AWD System Details:	Viscous coupling center differential (on many models), selectable low-range gear (on some manual transmissions).

Dimensions
Exterior
Length:	Approx. 174.8 inches (4440 mm)
Width:	Approx. 66.5 inches (1690 mm)
Height:	Approx. 50.6 inches (1285 mm)
Wheelbase:	Approx. 97.2 inches (2470 mm)
Weights
Curb Weight:	Approx. 2,500 - 2,800 lbs (1134 - 1270 kg) depending on engine and transmission

Safety Features
Ratings
NHTSA Rating:	Not readily available or rated under modern NHTSA standards for this era.
Active Features
AWD Stability:	All-wheel drive system enhances stability and traction in various conditions.
Passive Features
Seat Belts:	3-point front seat belts, 2-point rear lap belts.
Structural Reinforcement:	Designed with safety cage construction principles of the era.

Technology Features
Infotainment
Dashboard Design:	Advanced for its time, featuring an optional digital dashboard with gauges and readouts.
Audio System:	Factory AM/FM stereo with cassette player, often with multiple speakers. Upgrades may have been available.
Driver Assistance
Cruise Control:	Optional cruise control system available.
ABS:	Anti-lock Braking System (ABS) was optional on many XT models and standard on some XT6 variants.
Connectivity
Connectivity Features:	Limited by modern standards; primarily focused on vehicle operation and driver comfort.

Maintenance
Service Intervals
Oil Change Interval:	Every 3,000 - 5,000 miles or 3-6 months (consult manual for specific recommendation and oil type).
Timing Belt Replacement:	Recommended every 60,000 - 90,000 miles or 5-7 years. CRITICAL for boxer engines, failure can cause catastrophic engine damage.
Spark Plug Replacement:	Typically every 30,000 - 60,000 miles depending on plug type.
Fluid Specifications
Engine Oil Type:	API SG or SH, SAE 10W-30 or 10W-40 is common. Consult manual for exact viscosity and specification.
Engine Oil Capacity:	XT (EA82): Approx. 4.2 US quarts (4.0 L) with filter. XT6 (ER27): Approx. 5.3 US quarts (5.0 L) with filter.
Coolant Type:	Ethylene Glycol based antifreeze, typically a 50/50 mix with distilled water. Use Japanese-spec coolant or equivalent.
Transmission Fluid Type Mt:	API GL-4 Gear Oil, SAE 75W-90 or 80W-90.
Transmission Fluid Type At:	Dexron II or equivalent automatic transmission fluid (ATF).
Brake Fluid Type:	DOT 3 or DOT 4 brake fluid.
Known Issues
Timing Belt Wear:	Critical component; timely replacement is paramount to avoid catastrophic engine failure.
Head Gasket Leaks:	Can occur, especially on older engines, requiring significant labor to repair.
Rust And Corrosion:	Common for vehicles of this era, particularly in areas exposed to salt. Check wheel arches, rocker panels, and undercarriage.
Electrical Gremlins:	Older wiring harnesses and connections can degrade, leading to intermittent issues with various systems.
Suspension Bushings:	Worn rubber bushings in suspension and steering components are common, affecting handling and ride quality.

Vehicle History
Brand Heritage
Subaru Focus:	Subaru is renowned for its horizontally-opposed boxer engines and Symmetrical All-Wheel Drive systems, prioritizing engineering and capability.
Model Evolution
Subaru Xt Debut:	The Subaru XT (Leone II Coupe/A-Series) debuted in 1985 as a radical departure in styling from previous Subaru models, aiming for a more premium and performance-oriented image.
Subaru Xt6 Introduction:	The XT6 was introduced for the 1988 model year, featuring the new and more powerful 2.7L ER27 boxer-six engine and revised AWD system, positioning it as the flagship performance coupe.
Production
Production Years:	Subaru XT: 1985-1991 (though sales in some markets may have ended earlier). XT6: 1988-1991.
Manufacturing Location:	Japan

Awards & Recognition
Recognitions
Motor Trend Recognition:	The XT6 was often praised for its unique styling, comfortable ride, and capable AWD system, though its performance was generally considered adequate rather than exhilarating compared to some direct competitors.