The service and repair manual for the 1991 Volvo 780 — the 2.3L I4 engine, 1 trim. Matched to this exact model year, so the specifications and sequences are the ones Volvo published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1991 |
|---|---|
| Engines | 2.3L I4 — 141 cu in, SOHC, turbocharged |
| Trims | Base Coupe 2-Door |
| Federal record | 1 recall · 3 complaints · 11 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1991 780 manual
03 / ContentsSections in the manual
- Quick Lookups 50
- Engine Mechanical 12
- Accessories & Equipment 72
- Engine Performance 72
- Body & Frame 66
- General Information 1,476
- Electrical 67
- Maintenance 91
- Coolant Replacement Interval 25,000
- Over Pressure 22
04 / Known issuesRecalls on federal record for the 1991 780
- Electrical System — wiring · 97V166000This chafing can lead to a low ohm short circuit.
Owners have filed 3 complaints and Volvo has issued 11 technical service bulletins for the 1991 780. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1991 780 manual
Is this manual specific to the 1991 780?
Yes. It is the OEM manual matched to the 1991 model year, covering the 2.3L I4 across the Base Coupe 2-Door trims. Specifications and procedure sequences are the ones Volvo published for this year.
What 1991 780 problems does it help with?
1 recall is on federal record for the 1991 780, covering electrical system. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Volvo dealers.
Does it include 1991 780 wiring diagrams?
Yes — the complete wiring diagrams for the 1991 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 780 years and 1991 Volvo models
1990 780 · 1989 780 · 1988 780 · 1987 780 · all 5 years
1991 Volvo 240 · 1991 Volvo 740 · 1991 Volvo 940 · every 1991 model