The service and repair manual for the 1991 Audi 90 Quattro — the 2.3L I5 engine, 1 trim. Matched to this exact model year, so the specifications and sequences are the ones Audi published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1991 |
|---|---|
| Engines | 2.3L I5 — 141 cu in, DOHC |
| Trims | 20v Sedan 4-Door |
| Other 1991 90 Quattro variants | 90 → |
| Federal record | 2 recalls · 3 complaints · 6 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1991 90 Quattro manual
03 / ContentsSections in the manual
- Quick Lookups 69
- General Information 1,494
- Accessories & Equipment 94
- Heating, Ventilation & A/C (HVAC) 185
- Brakes 128
- Maintenance 92
- Restraints 34
- Electrical 154
- Steering 66
- Engine Mechanical 87
- Suspension 33
- Engine Performance 414
- Transmission 52
- Steering Wheel Nut 30
- Air Bag Module 53
04 / Known issuesRecalls on federal record for the 1991 90 Quattro
- Power Train — axle assembly · 93V006000In the event of failure, the vehicle's drive wheels couldlose power. in extreme circumstances, the f.
- Air Bags — frontal › sensor/control module-inactive · 97V172000In the event the sensor should malfunction, the air bag restraint system can inadvertently deploy.
Owners have filed 3 complaints and Audi has issued 6 technical service bulletins for the 1991 90 Quattro. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1991 90 Quattro manual
Is this manual specific to the 1991 90 Quattro?
Yes. It is the OEM manual matched to the 1991 model year, covering the 2.3L I5 across the 20v Sedan 4-Door trims. Specifications and procedure sequences are the ones Audi published for this year.
What 1991 90 Quattro problems does it help with?
2 recalls are on federal record for the 1991 90 Quattro, covering power train, air bags. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Audi dealers.
Does it include 1991 90 Quattro wiring diagrams?
Yes — the complete wiring diagrams for the 1991 build, alongside repair procedures, specifications and diagnostics.
Is it a subscription?
No. $40.99 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 90 Quattro years and 1991 Audi models
1995 90 Quattro · 1994 90 Quattro · 1993 90 Quattro · 1992 90 Quattro · 1990 90 Quattro · 1989 90 Quattro · 1988 90 Quattro · all 8 years
1991 Audi 100 · 1991 Audi 100 Quattro · 1991 Audi 200 · 1991 Audi 200 Quattro · 1991 Audi 80 · 1991 Audi 80 Quattro · 1991 Audi 90 · 1991 Audi Coupe Quattro · 1991 Audi V8 Quattro · every 1991 model