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Mitsubishi Magna 1990-1995 Workshop Service Repair Manual

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The Magna, produced for the model years 1990 through 1995, was a significant offering in the mid-size sedan market, particularly within Australia and select Asian regions. This generation, often associated...
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Mitsubishi Magna 1990-1995 Workshop Service Repair ManualMitsubishi Magna 1990-1995 Workshop Service Repair ManualMitsubishi Magna 1990-1995 Workshop Service Repair ManualMitsubishi Magna 1990-1995 Workshop Service Repair Manual
The Magna, produced for the model years 1990 through 1995, was a significant offering in the mid-size sedan market, particularly within Australia and select Asian regions. This generation, often associated with the TH chassis code, was locally manufactured in South Australia and aimed to provide a spacious and comfortable family vehicle. It was distinguished by its front-wheel-drive platform, a smooth ride quality, and a generally reliable reputation, often powered by a 3.0-liter V6 engine. The Magna competed directly with prominent models of its era, offering a blend of Japanese engineering with an emphasis on practicality and comfort for its intended users. This comprehensive workshop service repair manual, presented in English, covers a wide array of essential information for maintaining and repairing the Magna. Its scope includes detailed procedures for powertrain, chassis, electrical systems, and body components. Owners and technicians will find valuable guidance on routine maintenance, complex repair procedures, diagnostic troubleshooting, and critical technical specifications. The manual delves into engine overhauls, transmission rebuilds, suspension and steering repairs, brake system servicing, and electrical system diagnostics, providing factory-level detail to ensure the vehicle remains in optimal condition.
🏷️ Basic Information
Identification
Make:
Mitsubishi
Model:
Magna
Model Years Covered:
1990, 1991, 1992, 1993, 1994, 1995
Codes
Chassis Codes:
TH (often used to broadly refer to this generation)
👋 Introduction
Market Position
Positioning:
The Mitsubishi Magna of this era was a mid-size family sedan, competing in a highly contested segment in Australia against popular models like the Holden Commodore and Ford Falcon. It offered a blend of Japanese engineering with a focus on space and comfort for the Australian market.
Competitive Analysis
Competitors Australia:
Holden Commodore (VN/VP/VR), Ford Falcon (EA/EB/ED), Toyota Camry (V20/V30), Nissan Maxima (J30).
Key Features
Distinguishing Features:
Front-wheel drive platform, spacious interior, often praised for its smooth ride quality, and a reputation for reliability compared to some local rivals. Offered in sedan and wagon (Magna Wagon) body styles.
📋 Manual Details
Coverage Areas
Regions Covered:
Primarily Australian and some Asian markets where this generation was sold.
Page Count
Approximate Page Count:
Hundreds of pages (exact count not specified in product info, but typical for full factory manuals).
Manual Type
Type:
Workshop Service Repair Manual
Language
Language:
English
Format
Format:
PDF Download
📖 Manual Coverage
Systems Covered
Powertrain:
Engine, fuel system, cooling system, lubrication system, exhaust system, transmission (automatic and manual), drivetrain components (driveshafts, differentials).
Chassis:
Suspension (front and rear), steering system, brakes (front disc, rear drum/disc depending on variant), wheels, tires.
Electrical:
Wiring diagrams, charging system, starting system, ignition system, lighting, instrument cluster, body electricals (wipers, horn, power windows, locks), audio system, climate control electronics.
Body And Trim:
Body panel removal/installation, interior trim, exterior trim, glass, bumpers, doors, hood, trunk lid, seats, upholstery.
Procedures Included
Maintenance:
Oil change, filter replacement, fluid checks and top-offs, spark plug replacement, belt inspections and replacement, brake pad replacement, tire rotation.
Repair:
Engine component overhauls (cylinder head, pistons, crankshaft), transmission rebuilds, brake system repairs, suspension component replacement, steering rack overhaul, electrical component diagnosis and replacement.
Diagnostics:
Troubleshooting guides for common problems, diagnostic procedures for engine, transmission, electrical systems, and emissions controls.
Specifications And Data:
Torque specifications, clearances, fluid capacities, electrical specifications, component data.
Engine Overhaul:
Detailed steps for engine disassembly, inspection, measurement, and reassembly of internal components like pistons, connecting rods, crankshaft, camshafts, and cylinder heads. Includes valve adjustments, seal replacement.
Transmission Overhaul:
Complete rebuild procedures for both automatic and manual transmissions, including disassembly, component identification, clutch pack replacement (auto), synchro ring replacement (manual), seal replacement, and reassembly.
Electrical System Diagnostics:
Extensive wiring diagrams for all electrical systems. Step-by-step troubleshooting procedures for faults in starting, charging, ignition, lighting, engine control, transmission control, ABS, and body electronics.
Suspension And Steering Repair:
Procedures for replacing struts, shock absorbers, control arms, ball joints, tie rod ends, wheel bearings, and steering rack or gearbox components. Includes alignment specifications.
Brake System Maintenance And Repair:
Instructions for replacing brake pads and rotors/discs, caliper overhaul, wheel cylinder replacement, brake line bleeding, ABS modulator service, and parking brake adjustment.
Body Panel And Trim Replacement:
Guidance on removing and installing exterior body panels (fenders, doors, bumpers), interior trim pieces, headliner, carpets, and glass.
Air Conditioning Service:
Information on AC system components, refrigerant handling (with appropriate safety warnings), leak detection, component replacement (compressor, condenser, evaporator), and system evacuation and recharge.
Emission Control System Diagnostics:
Details on emission control components such as EGR valves, O2 sensors, catalytic converters, and diagnostic procedures to address check engine lights and emissions-related faults.
Technical Depth
Depth:
Comprehensive factory-level detail, suitable for professional technicians and advanced DIY enthusiasts. Covers routine maintenance through complete engine and transmission rebuilds.
📊 Manual Specifications
File Format
Digital Format:
PDF (Portable Document Format)
Print Quality
Print Readability:
Designed for clear printing with high-resolution diagrams and text.
Binding Type
Binding For Print:
Typically spiral-bound or comb-bound for ease of use in a workshop environment when printed.
Paper Type
Recommended Paper:
Standard copy paper for printing; thicker cardstock for cover if binding.
⚙️ Engine Specifications
Primary Engine
Engine Code Common:
6G72 (3.0L V6 SOHC)
Engine Type:
V6 SOHC (Single Overhead Camshaft)
Displacement:
2,972 cc (3.0 Liters)
Bore X Stroke:
86.2 mm x 84.8 mm
Compression Ratio:
Approx. 8.5:1 (varies slightly by model/year)
Performance
Horsepower Approx:
141 kW (approx. 189 hp) @ 6000 rpm (V6)
Torque Approx:
254 Nm (approx. 187 lb-ft) @ 4500 rpm (V6)
Fuel System
Induction:
Electronic Fuel Injection (EFI) with Multi-Point Injection (MPI)
Fuel Type:
Unleaded Petrol (91 RON minimum recommended)
Ignition System
Ignition Type:
Electronic ignition with distributor (some later models might feature distributorless ignition).
Cooling System
Cooling Type:
Pressurized liquid cooling system.
Lubrication System
Oil Type Recommendation:
API SF/SG or higher, SAE 10W-30 or 10W-40 (refer to specific manual for exact grade and capacity).
🔧 Transmission
Standard
Transmission Options:
Depending on trim level and engine: 4-speed Automatic (F4A51 or similar), 5-speed Manual (F5M33-1 or similar).
Optional
Optional Transmission:
All-wheel drive (AWD) was a notable option on some higher-specification Magna models (e.g., Verada AWD).
Features
Automatic Features:
Lock-up torque converter for improved fuel efficiency.
Fluid Specifications
Automatic Transmission Fluid:
Dexron-II or equivalent (confirm specific requirement in manual).
Manual Transmission Fluid:
API GL-4, SAE 75W-90 or 80W-90 gear oil (confirm specific requirement in manual).
📐 Dimensions
Exterior
Length Approx:
4700 mm (approx.)
Width Approx:
1750 mm (approx.)
Height Approx:
1400 mm (approx.)
Wheelbase Approx:
2700 mm (approx.)
Weights
Curb Weight Approx:
1450 kg - 1600 kg (depending on body style, engine, and features)
Gross Vehicle Weight Rating Approx:
1950 kg - 2100 kg (depending on variant)
Cargo
Cargo Volume Sedan Approx:
Large for its class, details vary by year and configuration.
Cargo Volume Wagon Approx:
Significantly larger, details vary by year and configuration.
🛡️ Safety Features
Ratings
Safety Ratings Era:
Safety standards were less stringent in the early 1990s compared to today. Specific ANCAP or equivalent ratings for this precise model generation are unlikely or would be low by modern standards.
Active Features
Active Safety Features:
Anti-lock Braking System (ABS) often optional or standard on higher trims. Power-assisted steering.
Passive Features
Passive Safety Features:
Front airbags (driver and passenger, often optional on base models), seatbelts with pre-tensioners, impact-absorbing body structure.
Chassis Safety Design
Chassis Strengthening:
Reinforced door beams, collapsible steering column.
💡 Technology Features
Infotainment
Audio System:
Factory fitted radio/cassette player, often with an optional CD player on higher trims. Speaker configurations vary by model.
Climate Control:
Manual air conditioning and heating systems. Some higher trims may have semi-automatic climate control.
Driver Assistance
Cruise Control:
Optional on many models, standard on some higher trims.
Trip Computer:
Basic trip computer functionality might be available on some higher-spec models, displaying average fuel consumption or range.
Connectivity
Connectivity Features:
No integrated Bluetooth or modern smartphone connectivity; upgrades would be aftermarket.
🔧 Maintenance
Service Intervals
Oil And Filter Change:
Every 10,000 km or 12 months, whichever comes first (refer to manual for exact interval).
Air Filter Replacement:
Every 20,000 km or 24 months (or as needed based on operating conditions).
Spark Plug Replacement:
Approximately every 60,000 - 80,000 km (depending on plug type, e.g., iridium plugs may last longer).
Timing Belt Replacement:
Crucial for V6 engines. Typically every 90,000 km or 5-7 years due to the non-interference nature if it breaks, but belt failure can still cause significant damage. Verify exact interval in manual. (The 6G72 is a timing belt engine).
Fluid Specifications
Coolant Type:
Ethylene Glycol based coolant (e.g., 50/50 mix with distilled water). Refer to manual for specific OEM recommendation or equivalent.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid (confirm specific requirement in manual).
Known Issues
Common Problem 1:
Timing belt failure if not replaced at recommended intervals, leading to potential engine damage.
Common Problem 2:
Wear and tear on suspension components (bushings, ball joints, shock absorbers) due to age and mileage.
Common Problem 3:
Automatic transmission issues, particularly related to fluid condition and wear over time. Torque converter lock-up issues.
Common Problem 4:
Electrical gremlins can occur with age, affecting sensors, power windows, or central locking. Check wiring harnesses for corrosion.
Common Problem 5:
Exhaust system corrosion and potential leaks.
📚 Vehicle History
Brand Heritage
Mitsubishi Heritage:
Mitsubishi has a long history in automotive manufacturing, known for its robust engineering and often innovative designs, particularly in its four-wheel-drive vehicles and smaller, economical cars.
Model Evolution
Magna Generation Evolution:
This generation (often referred to as the TH Magna) represented a significant update from its predecessor (TC/TD/TE). It was part of Mitsubishi Australia's strategy to produce competitive local models. The subsequent generation (TJ) introduced significant styling and engineering changes.
Production
Production Location:
Locally manufactured in Adelaide, South Australia, by Mitsubishi Motors Australia Limited (MMAL).
Production Years For Generation:
Approximately 1991-1996 for the TH Magna.
🏆 Awards & Recognition
Recognitions
Auto Magazine Awards:
While specific 'Car of the Year' awards for this exact Magna generation might be hard to pinpoint, Mitsubishi Australia often received commendations for its local manufacturing quality and the value proposition of the Magna range.
Ratings
Reliability Perception:
Generally considered a reliable vehicle, especially the V6 engine, provided it receives regular maintenance. Reliability compared to competitors varied depending on specific model years and engine/transmission combinations.
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