1990 Mitsubishi Eclipse Service & Repair Manual

All Eclipse years1991 →

The service and repair manual for the 1990 Mitsubishi Eclipse — 1.8L I4 and 2.0L I4 and 2.0L I4 engines, 4 trims. Matched to this exact model year, so the specifications and sequences are the ones Mitsubishi published for your car, not figures carried over from a neighbouring year.

01 / FitmentWhat this manual covers

Model year1990
Engines
1.8L I4 — 107 cu in, SOHC
2.0L I4 — 122 cu in, DOHC
2.0L I4 — 122 cu in, DOHC, turbocharged
TrimsGS Hatchback 2-Door · GST Hatchback 2-Door · GSX Hatchback 2-Door · Base Hatchback 2-Door
Federal record1 recall · 59 complaints · 6 technical service bulletins (refreshed 2026-08-21)

02 / InsideSample pages from the 1990 Eclipse manual

1990 Mitsubishi Eclipse service manual page 11990 Mitsubishi Eclipse service manual page 21990 Mitsubishi Eclipse service manual page 31990 Mitsubishi Eclipse service manual page 41990 Mitsubishi Eclipse service manual page 51990 Mitsubishi Eclipse service manual page 6

03 / ContentsSections in the manual

  • Quick Lookups 67
  • Engine Performance 717
  • Accessories & Equipment 132
  • General Information 1,403
  • Body & Frame 56
  • Heating, Ventilation & A/C (HVAC) 165
  • Brakes 65
  • Maintenance 72
  • Drivelines & Axles 63
  • Steering 67
  • Electrical 110
  • Suspension 98
  • Engine Mechanical 204
  • Transmission 165

04 / Known issuesRecalls on federal record for the 1990 Eclipse

  1. Exterior Lighting · 09E012000
    Decreased lighting visibility may result in a vehicle crash.

Owners have filed 59 complaints and Mitsubishi has issued 6 technical service bulletins for the 1990 Eclipse. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.

FAQQuestions about the 1990 Eclipse manual

Is this manual specific to the 1990 Eclipse?

Yes. It is the OEM manual matched to the 1990 model year, covering the 1.8L I4 and 2.0L I4 and 2.0L I4 across the GS Hatchback 2-Door, GST Hatchback 2-Door, GSX Hatchback 2-Door, Base Hatchback 2-Door trims. Specifications and procedure sequences are the ones Mitsubishi published for this year.

What 1990 Eclipse problems does it help with?

1 recall is on federal record for the 1990 Eclipse, covering exterior lighting. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Mitsubishi dealers.

Does it include 1990 Eclipse wiring diagrams?

Yes — the complete wiring diagrams for the 1990 build, alongside repair procedures, specifications and diagnostics.

Is it a subscription?

No. $29.99 once and the manual is yours. It is a digital manual — nothing ships; access details arrive by email after checkout and it works on any device.

RelatedOther Eclipse years and 1990 Mitsubishi models

1996 Eclipse · 1995 Eclipse · 1994 Eclipse · 1993 Eclipse · 1992 Eclipse · 1991 Eclipse · all 23 years

1990 Mitsubishi Galant · 1990 Mitsubishi Mighty Max · 1990 Mitsubishi Mirage · 1990 Mitsubishi Montero · 1990 Mitsubishi Precis · 1990 Mitsubishi Sigma · 1990 Mitsubishi Van · every 1990 model