The Mitsubishi Sigma, produced for the 1996-1997 model years, represents the Second Generation (ES/EC) of this large sedan, often marketed as a premium or luxury vehicle. Designed with an emphasis on comfort, a quiet ride, and smooth performance, the Sigma typically featured V6 engines, such as the 3.0L 6G72, with options for front-wheel drive or all-wheel drive. Its design philosophy aimed to provide a refined driving experience, competing with established models from manufacturers like Toyota, Buick, Ford, Chevrolet, and Nissan. This generation shared its platform with the Mitsubishi Diamante, underscoring its focus on advanced technology and a sophisticated presence for its era.
This comprehensive workshop service repair manual, written in English, covers all styles of the Mitsubishi Sigma from 1996-1997, including sedan models. It provides in-depth coverage of powertrain systems such as the engine, transmission, fuel injection, and cooling systems, as well as chassis components including brakes, suspension, and steering. The manual also details the electrical system, interior, and comfort features. With hundreds of pages, detailed step-by-step repair procedures, troubleshooting guides, and numerous photos and illustrations, this manual is an essential resource for owners and technicians to maintain, diagnose, and repair the vehicle effectively.
Generation Designation:
Second Generation (ES/EC)
Segment:
Large Sedan (often marketed as a premium or luxury sedan)
Competitors 1996 1997:
Toyota Avalon, Buick LeSabre, Ford Taurus, Chevrolet Lumina, Nissan Maxima
Powertrain Options:
V6 engines (e.g., 3.0L 6G72 SOHC/DOHC), likely front-wheel drive, optional all-wheel drive (AWD) on some trims/markets.
Design Philosophy:
Emphasis on comfort, quiet ride, and smooth performance, often featuring advanced technology for its era.
Primary Markets:
North America, Australia, Japan (as Mitsubishi Diamante)
Body Styles:
All Styles Covered (Sedan, potentially Wagon if applicable to these years in specific markets)
Estimated Pages:
Hundreds of pages
Type:
Workshop Service Repair Manual
Powertrain:
Engine Service/Repair, Transmission Service/Repair, Fuel Injection, Fuel System, Engine Control System, Cooling System, Emission System, Differential/Drive, Axle
Chassis:
Brake System, Suspension, Steering, Chassis/Body
Electrical And Comfort:
Wiring Diagram, Electrical System, Heater/Air Conditional, Restraint System, Interior
Maintenance And Routine:
General Maintenance, Periodic Lubrication
Diagnostics And Repair:
Troubleshooting, Step-by-step repair procedures, Electrical system diagnosis and repair
Depth:
Complete disassembly and reassembly guidance, detailed substeps, notes, cautions, and warnings
Illustrations:
Hundreds of photos and illustrations, enlarged inset views for detailed part examination
Compatibility:
Windows PC, Mac
Printability:
Printable without restriction (entire manual or selected pages)
Binding:
Digital Download (printable for physical binding)
Paper Recommendation:
Standard printing paper (user dependent)
Engine Code And Type:
6G72 (3.0L V6, SOHC or DOHC)
Horsepower Range:
Approximately 150-200 hp (depending on SOHC/DOHC and market)
Torque Range:
Approximately 180-200 lb-ft (depending on SOHC/DOHC and market)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline
Transmission Type Standard:
4-speed Automatic Transmission
Transmission Type Optional:
Potentially a 5-speed manual in some markets or specific trims (less common for Sigma).
AWD Option:
Availability of an All-Wheel Drive (AWD) system (often designated as 'Viscous Coupling AWD' or similar).
Wheelbase:
Approximately 107.1 inches (2720 mm)
Length:
Approximately 192.7 inches (4895 mm)
Curb Weight Range:
Approximately 3400-3700 lbs (1542-1678 kg)
NHTSA Front Impact:
Likely 4-star rating (based on typical performance of vehicles from this era, specific data may vary)
Braking System:
Front Ventilated Discs, Rear Solid Discs (ABS typically standard or optional)
Traction Control:
Optional Traction Control System (TCS) available on some models.
Airbags:
Driver and passenger airbags standard.
Seatbelts:
Front pretensioner seatbelts.
Audio System:
Factory AM/FM stereo with cassette player and CD player (optional on some trims).
Climate Control:
Automatic climate control with digital display available on higher trims.
Cruise Control:
Standard cruise control.
Keyless Entry:
Optional keyless entry system.
Auxiliary Input:
Not typically equipped with factory auxiliary inputs; aftermarket solutions available.
Oil Change Interval:
Every 3,750 - 5,000 miles (6,000 - 8,000 km) or 6 months, whichever comes first.
Timing Belt Replacement:
Every 60,000 - 90,000 miles (96,000 - 145,000 km) or 5-7 years, critically important due to interference engine design.
Engine Oil Type:
API SG/SH or higher, SAE 5W-30 or 10W-30 (refer to manual for exact viscosity based on temperature).
Coolant Type:
Mitsubishi Super Long Life Coolant (MS-97641) or equivalent ethylene glycol-based coolant with corrosion inhibitors.
Transmission Fluid Type:
Dexron III/Mercon Automatic Transmission Fluid (ATF) or equivalent.
Engine Mounts:
Premature wear and failure of engine mounts, leading to vibrations.
Suspension Components:
Wear in ball joints, tie rod ends, and control arm bushings, particularly with higher mileage.
Oxygen Sensors:
Failure of oxygen sensors, leading to poor fuel economy and check engine light illumination.
Exhaust System:
Corrosion and leaks in the exhaust system, particularly in rust-prone climates.
Parent Company:
Mitsubishi Motors Corporation
Previous Generation:
First Generation Sigma (1990-1996), often based on the Mitsubishi Debonair or Diamante.
Platform Sharing:
Shared platform with Mitsubishi Diamante (Japan) and potentially other Mitsubishi models depending on market.
Manufacturing Location:
Primarily Japan (for Mitsubishi Diamante, which Sigma was based on)
Production Years Global:
1990-2005 (as Diamante/Sigma lineage)
Safety Awards Typical:
May have received good crash test ratings for its era, but specific industry awards for this model are not widely documented.
Consumer Reports Typical:
Generally considered a reliable vehicle for its time, though some noted areas for improvement in certain components. Specific year ratings would require access to historical consumer reports.
