The service and repair manual for the 1990 Porsche 928 — the 5.0L V8 engine, 2 trims. Matched to this exact model year, so the specifications and sequences are the ones Porsche published for your car, not figures carried over from a neighbouring year.
01 / FitmentWhat this manual covers
| Model year | 1990 |
|---|---|
| Engines | 5.0L V8 — 302 cu in, DOHC |
| Trims | GT Coupe 2-Door · Base Coupe 2-Door |
| Federal record | 1 recall · 0 complaints · 76 technical service bulletins (refreshed 2026-08-21) |
02 / InsideSample pages from the 1990 928 manual
03 / ContentsSections in the manual
- Quick Lookups 66
- General Information 1,409
- Brakes 164
- Electrical 70
- Maintenance 67
- Restraints 69
- Engine Performance 68
- Camshaft Housing Mounting Bolt 14
- Camshaft Pulley Mounting Bolt 33
04 / Known issuesRecalls on federal record for the 1990 928
- Fuel System, Gasoline — storage › tank assembly · 90V117000If fuel comes into contact with a hot exhaust system orother ignition source, it could result in a f.
Owners have filed 0 complaints and Porsche has issued 76 technical service bulletins for the 1990 928. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.
FAQQuestions about the 1990 928 manual
Is this manual specific to the 1990 928?
Yes. It is the OEM manual matched to the 1990 model year, covering the 5.0L V8 across the GT Coupe 2-Door, Base Coupe 2-Door trims. Specifications and procedure sequences are the ones Porsche published for this year.
What 1990 928 problems does it help with?
1 recall is on federal record for the 1990 928, covering fuel system, gasoline. The manual carries the manufacturer's diagnostic and repair procedures for those systems; the recall repairs themselves are done free by Porsche dealers.
Does it include 1990 928 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 928 years and 1990 Porsche models
1995 928 · 1994 928 · 1993 928 · 1991 928 · 1989 928 · 1988 928 · 1987 928 · 1986 928 · 1985 928 · 1984 928 · all 13 years