This comprehensive service and repair manual is your ultimate guide to maintaining and repairing your 1975-1995 Porsche 928. It covers all models, including the GT, GTS, and S4, providing detailed instructions for a wide range of repair and service procedures. This manual is a treasure trove of information for Porsche 928 owners and mechanics alike. Whether you're a seasoned professional or a DIY enthusiast, the step-by-step instructions, diagrams, and illustrations make even the most complex tasks manageable. You'll find complete coverage on all major systems, including: * **Engine Overhaul & Rebuilding:** Dive deep into engine repair with detailed instructions on disassembly, rebuilding, and reassembly. * **Brakes:** Ensure safe and reliable braking with comprehensive coverage on brake system components, inspection, maintenance, and repair. * **Sunroofs:** Learn how to troubleshoot and repair sunroof issues, including operation, leaks, and component replacement. * **Timing Belt Replacement:** This critical maintenance procedure is explained in detail, with clear instructions and illustrations for a successful replacement. * **Trouble Codes:** Understand and interpret diagnostic trouble codes to quickly pinpoint and resolve issues. * **Wiring Diagrams:** Decode the electrical system with comprehensive wiring diagrams for easy troubleshooting and repair. * **Troubleshooting & Diagnostics:** Develop a systematic approach to diagnosing and solving problems. * **Computer Diagnostic Trouble Tree Charts:** Use these charts to efficiently identify and address electronic system faults. * **Engine Performance:** Optimize your engine's performance with detailed guidance on tuning, adjustments, and troubleshooting issues. * **Front End & Alignment Procedures & Specifications:** Ensure precise alignment and handling with detailed instructions and specifications for adjustments. * **Suspension:** Maintain a smooth and comfortable ride with instructions on suspension components, inspections, repairs, and adjustments. * **Transmission Removal & Installation:** Learn the proper procedures for removing and reinstalling the transmission. * **Air Conditioning & Capacities:** Keep your cabin cool and comfortable with guidance on air conditioning system maintenance, repair, and refrigerant capacities. * **Transmission In Car Servicing:** Perform essential maintenance on your transmission without removing it from the vehicle. * **Computer Diagnostic Codes:** Decode electronic system fault codes to identify and address issues. * **Firing Orders:** Understand the proper firing order for your engine for efficient and reliable operation. * **Detailed Specifications On Every Model Covered:** Find specific technical data for each year and model, ensuring you use the correct parts and procedures. * **Factory Maintenance Schedules & Charts:** Follow recommended maintenance intervals to keep your Porsche 928 in top condition. * **Serpentine Belt Routings With Diagrams:** Correctly route the serpentine belt for optimal performance. * **Timing Belt Service Procedures:** Properly replace the timing belt to prevent catastrophic engine damage. * **Brake Servicing Procedures:** Ensure safe and effective braking with detailed procedures for maintaining and repairing your brakes. * **Driving Concerns:** Troubleshoot common driving issues and address potential problems. * **Complete Torques Specifications:** Find the correct tightening torque for every bolt and nut on your Porsche 928. * **U-Joint AND CV-Joint Service Procedures:** Maintain smooth and reliable drivetrain operation with comprehensive instructions for joint inspection, lubrication, and repair. * **Repair Procedures:** Find detailed instructions for a wide array of repair procedures, covering everything from minor adjustments to major overhauls. * **Complete Wiring Diagrams:** Decipher the electrical system with comprehensive wiring diagrams for easy troubleshooting and repairs. * **Hundreds of Illustrations:** Visualize each step with clear and detailed illustrations for easy comprehension. * **Vacuum Diagrams:** Understand the complex vacuum system for diagnosing and resolving engine performance issues. This manual empowers you to confidently tackle any repair or maintenance task, saving you time, money, and frustration. With its wealth of information and clear instructions, you'll be equipped to keep your Porsche 928 running smoothly for years to come.

The 1975-1995 Porsche 928 is a grand touring car that revolutionized the Porsche lineup and marked a significant departure from the traditional rear-engined sports car configuration. Designed to be a comfortable and luxurious grand tourer while retaining the performance and handling expected of a Porsche, the 928 featured a front-mounted, water-cooled V8 engine and a transaxle rear axle, which improved weight distribution and handling. The 928 was initially conceived as a potential successor to the iconic 911, albeit with a more practical and luxurious approach. Its sleek and aerodynamic design, penned by designer Wolfgang Porsche, set it apart from the 911's more traditional styling, and earned it accolades for its elegant and futuristic lines. The 928 was available in various iterations throughout its production run, offering a range of power outputs and features. Early models were powered by a 4.5-liter V8 engine, while later versions received larger 4.7-liter and 5.0-liter units. The 928's innovative transaxle design, which placed the transmission and differential at the rear axle, provided exceptional handling and balance. The 928 was also praised for its luxurious interior, featuring high-quality materials and a comfortable driving experience. With its powerful engine, refined handling, and luxurious interior, the Porsche 928 offered a unique combination of performance and comfort, making it a highly sought-after and coveted classic today.