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1991 Porsche 928 Service and Repair Manual
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$29.99 USD
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Covers all 1991 928 trims — GT Coupe 2-Door, Base Coupe 2-Door ·
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Complete repair procedures
Wiring diagrams & schematics
Torque specifications
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1991 Porsche 928 Service and Repair Manual
Regular price
$29.99 USD
Unit price
1991 Porsche 928 service and repair manual — a detailed, factory-style reference for maintenance, diagnostics, and repair. Use it to confirm correct procedures, specifications, and system coverage before you start work.
Built for technicians and DIY owners, this manual helps you troubleshoot accurately, follow step-by-step repair procedures, and use wiring diagrams and system sections to diagnose problems faster.
What’s included
- Step-by-step repair procedures and service information
- Specifications and reference data (where provided)
- Electrical coverage with wiring diagrams
- Coverage across key systems: engine, transmission, brakes, steering, suspension, HVAC, and more
Trims covered
- GT Coupe 2-Door
- Base Coupe 2-Door
Engines covered
- 5.0L 4950CC V8 GAS DOHC Naturally Aspirated
Index / Table of contents
- Body
- Brakes
- Chassis Electrical
- Driveline
- Engine Cooling
- Engine Electrical
- Engine Mechanical
- Engine Performance & Emission Controls
- Fuel System
- General Information & Identification
- Heating, Ventilation, & Air Conditioning
- Hybrid & Electric Vehicle Systems
- Steering
- Suspension
- Transmission, Clutch, & Transfer Case
- Wiring Diagrams
A PLASTIC FILLER PIECE LOCATED IN THE AUTOMATIC TRANSMISSION WAS INSTALLED WITHOUT SUFFICIENT SUPPORT. THIS FILLER PIECE CAN MOVE BECAUSE OF THE HYDRAULIC PRESSURE IN THE SYSTEM, AND NOT ALLOW THE AUT
Consequence
IF THE ACCELERATOR PEDAL IS PUSHED INTO THE KICK-DOWNPOSITION, THE EXPECTED ACCELERATION OF THE VEHI
Remedy
DEALERS WILL INSTALL A NEW FILLER PIECE WHICH HAS A SECURING BRACE TO PREVENT MOVEMENT.
Information for PIWIS tester update 42.300.050 & .052
Instructions on manufactures certificate for approved Porsche A40 engine oils
Instructions on manufacturers certificate for approved C20 engine oils
Instructions on manufactures certificate for approved Porsche C30 engine oils
Information for PIWIS tester update 42.300.035
Information for PIWIS tester update 42.300.040 & .041
Information for PIWIS tester update 42.300.030 - .032
Parts information for parts withdrawal involving the glass roof - 9J0877069EY and 9J0877069DY
Showing the 8 most recent of 76 technical service bulletins on file with NHTSA.
No complaints filed
No consumer complaints on file with NHTSA for the 1991 Porsche 928.
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