This page contains the factory workshop manuals for the 1978-1994 Porsche 928 series.
Workshop Manuals
- Volume 1. Engine. 40MB, PDF. 8 Valve Engine
- Volume 1A. Fuel and Ignition. 40 MB, PDF. Fuel and Ignition
- Volume 2. Transmission. 59 MB, PDF. Manual
- Volume 3. Transmission. 39 MB, PDF. Automatic
- Volume 4. Suspension and Brakes. 64 MB, PDF. Suspension
- Volume 5. Chassis. 43 MB, PDF. Chassis
- Volume 6. Electrical. 1 MB. PDF. Electrical
- Volume 7. Wiring Diagram Index. 75 KB. PDF. Index
928 Current Flow Diagrams & Wiring Diagrams
- Symbols and Explanation. 133 KB. PDF. Symbols
- 1978 Current Flow Diagram. 2 MB. PDF. 1978
- 1979 Current Flow Diagram. 2 MB. PDF. 1979
- 1980 Current Flow Diagram. 2 MB. PDF. 1980
- 1981 Current Flow Diagram. 2 MB. PDF. 1981
- 1982 Current Flow Diagram. 2 MB. PDF. 1982
- 1983 Current Flow Diagram. 2 MB. PDF. 1983
- 1984 Wiring Diagram. 2 MB. PDF. 1984
- 1985 Wiring Diagram. 1 MB. PDF. 1985
- 1986 Wiring Diagram. 2 MB. PDF. 1986
- 1987 Wiring Diagram. 3 MB. PDF. 1987
- 1988 Wiring Diagram. 4 MB. PDF. 1988
- 1989 Wiring Diagram. 4 MB. PDF. 1989
- 1990 Wiring Diagram. 4 MB. PDF. 1990
- 1991 Wiring Diagram. 4 MB. PDF. 1991
- 1993-1 Wiring Diagram. 4 MB. PDF. 1993-1
- 1993-2 Wiring Diagram. 4 MB. PDF. 1993-2
- 1994 Wiring Diagram. 4 MB. PDF. 1994
Project 928 Book.
Very interesting book about the development of the 928.
- 21 MB, PDF. Project 928
Last Update February 2021