Service and repair manuals for 2 model years of the Mitsubishi Sigma, 1989 to 1990. Each manual is matched to one exact year — the specifications and procedure sequences are the ones Mitsubishi published for that year's engine and trim, not values carried across the whole production run.
Engines across the range: 3.0L V6 — 181 cu in, SOHC.
Federal safety record, all years: 2 recalls, 4 owner complaints and 6 technical service bulletins are logged for the Sigma. Refreshed 2026-08-21.
01 / Model yearsChoose your Sigma year
| Year | Price | Recalls | Engines | Trims | |
|---|---|---|---|---|---|
| 1990 | $29.99 | 1 | 3.0L V6 | Base Sedan 4-Door | details → |
| 1989 | $29.99 | 1 | 3.0L V6 | Base Sedan 4-Door | details → |
02 / InsideSample pages
From the 1990 Sigma manual.
03 / ContentsWhat the manual covers
- Quick Lookups 67
- General Information 1,418
- Accessories & Equipment 147
- Heating, Ventilation & A/C (HVAC) 143
- Body & Frame 54
- Maintenance 67
- Brakes 125
- Restraints 51
- Drivelines & Axles 19
- Steering 67
- Electrical 112
- Suspension 210
- Engine Mechanical 143
- Transmission 131
- Engine Performance 607
- Tighten bearing to 14
04 / OwnershipOwn it — don't rent it
| Option | What you pay | After a year |
|---|---|---|
| eManualStore Sigma manual | $29.99 once | Still yours |
| Per-vehicle online subscription | from $29 / year, renewing | Pay again or lose access |
| Library membership services | $33 / month, capped | $396 spent, nothing kept |
| Professional shop databases | $499–$2,388 / year | Renew or lose access |
Competitor figures as published on their sites, August 2026.
FAQQuestions about the Sigma manual
Which Sigma years does this manual cover?
Every year from 1989 to 1990 — 2 separate manuals, one per model year. Pick your year in the selector; the manual you receive is matched to that exact year, engine and trim.
Is this the OEM Mitsubishi Sigma manual or an aftermarket guide?
The OEM version. It carries the procedures, specifications, torque values and wiring diagrams Mitsubishi published for the Sigma, organized by system — not a condensed aftermarket summary.
Does it include Sigma wiring diagrams?
Yes. Full wiring diagrams are part of every Sigma manual, alongside repair procedures, specifications and diagnostic information.
Does the manual cover Sigma recalls?
2 recalls are on federal record across the 1989–1990 Sigma, listed by year below. The manual carries the manufacturer's diagnostic and repair procedures behind the systems involved; the recall repairs themselves are performed free by Mitsubishi dealers.
Why do some Sigma years cost more?
Every Sigma year is $29.99.
Is this a subscription?
No. One payment, and the manual is yours to keep — unlike per-vehicle subscriptions that renew every year.
How do I get the manual after purchase?
It is a digital manual — nothing ships. Access details arrive by email right after checkout, and you can use it on any device.
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