Description
Factory Mitsubishi Eclipse Workshop Manual (1990–1994)
This is the factory-level service manual for the first-generation Mitsubishi Eclipse, covering every trim from the base model through the turbocharged GSX — the same reference used by Mitsubishi-certified technicians throughout the 1990–1994 model run.
Powertrain & Drive Coverage
| Component | Variants Covered |
|---|---|
| Petrol | 1.8L 4G37 SOHC (92 hp); 2.0L 4G63 DOHC N/A (135 hp); 2.0L 4G63T DOHC Turbo (190 hp) |
| Diesel | N/A |
| Transmissions | 5-speed manual; 4-speed automatic |
| Drive | FWD (chassis D21A); AWD (chassis D22A) |
| Model Years | 1990, 1991, 1992, 1993, 1994 |
| Badge Twins | Eagle Talon (1G), Plymouth Laser (1G) — DSM platform |
Common Eclipse Repairs Covered
| System | Procedures |
|---|---|
| 4G63T Timing Belt | Belt, tensioner, and balance shaft belt replacement with torque specs — a known high-interval service on 1G turbo models |
| Turbocharger System | Boost controller diagnostics, wastegate inspection, oil feed/return line service |
| AWD Transfer Case & Rear Differential | Viscous coupling inspection, fluid change, axle shaft seal replacement on D22A models |
| Engine Management & Fuel Injection | Injector service, fuel pressure testing, ECU fault code retrieval and sensor replacement |
Format & Delivery
PDF. Instant download; lifetime re-downloads.
Frequently Asked Questions
Does this manual cover the turbocharged GSX with all-wheel drive?
Yes. All first-generation Eclipse trims are included — base, GS, GS Turbo, and GSX. The GSX uses chassis code D22A and pairs the 2.0L 4G63T turbo engine with AWD. The manual contains dedicated procedures for the viscous-coupled AWD drivetrain, transfer case, and rear differential unique to that variant.
Is the Eagle Talon or Plymouth Laser covered by this manual?
The 1990–1994 Eclipse shares its Diamond-Star Motors (DSM) platform with the Eagle Talon and Plymouth Laser. While the manual is written specifically for the Mitsubishi Eclipse, the powertrain and chassis procedures are largely identical across all three DSM siblings, making it a valuable reference for Talon and Laser owners as well.
Are complete wiring diagrams included for the turbo models?
Yes. Full electrical schematics are included for every Eclipse variant, with additional diagrams covering boost control, fuel injection, and intercooler-related circuits specific to the 4G63T turbo. Connector pinouts, ground locations, and color-coded wire identification are all present to support accurate electrical diagnosis.
What format is the manual?
This manual is a PDF file delivered via instant download. It is fully searchable and compatible with Windows, Mac, Linux, Android, iOS, and any device running a PDF reader. Individual pages or sections can be printed for use in the shop.
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