1991 Porsche 928 Service & Repair Manual

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The service and repair manual for the 1991 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 year1991
Engines
5.0L V8 — 302 cu in, DOHC
TrimsGT Coupe 2-Door · Base Coupe 2-Door
Federal record1 recall · 0 complaints · 76 technical service bulletins (refreshed 2026-08-21)

02 / InsideSample pages from the 1991 928 manual

1991 Porsche 928 service manual page 11991 Porsche 928 service manual page 21991 Porsche 928 service manual page 31991 Porsche 928 service manual page 41991 Porsche 928 service manual page 51991 Porsche 928 service manual page 6

03 / ContentsSections in the manual

  • Quick Lookups 65
  • General Information 1,477
  • Brakes 164
  • Maintenance 67
  • Electrical 68
  • Restraints 69
  • Engine Performance 68
  • Camshaft Housing Mounting Bolt 14
  • Camshaft Pulley Mounting Bolt 33

04 / Known issuesRecalls on federal record for the 1991 928

  1. Power Train — automatic transmission · 92V092000
    If the accelerator pedal is pushed into the kick-downposition, the expected acceleration of the vehi.

Owners have filed 0 complaints and Porsche has issued 76 technical service bulletins for the 1991 928. The manual carries the manufacturer's diagnostic and repair procedures behind these systems.

FAQQuestions about the 1991 928 manual

Is this manual specific to the 1991 928?

Yes. It is the OEM manual matched to the 1991 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 1991 928 problems does it help with?

1 recall is on federal record for the 1991 928, covering power train. 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 1991 928 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.

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