Porsche 928 1978-1995 Service Repair Manual

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🏷️ Basic Information Identification Make: Porsche Model: 928 Model Years Covered: 1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995 Vehicle Generation: First Generation (1978-1986) and Second Generation (1987-1995) Codes Chassis Codes: 928, 928 S, 928 S2, 928 S3, 928 S4, 928 GT, 928 GTS 👋 Introduction Market Position Vehicle Class: Grand Tourer (GT), Sports Car Unique Selling Proposition: Front-engine, rear-wheel-drive V8 grand tourer with transaxle, offering a blend of luxury, performance, and Porsche engineering. Competitive Analysis Key Competitors: Ferrari 400/412, Aston Martin V8 Vantage, Jaguar XJ-S, Mercedes-Benz SEC models, BMW 8 Series (later). Key Features Design Philosophy: Designed as a more practical and comfortable alternative to contemporary mid-engined sports cars, emphasizing long-distance touring. Technical Innovation: Transaxle design (engine front, gearbox rear) for optimal weight distribution, advanced (for its time) independent suspension, V8 engine. Manual Utility Benefit To Owner: Enables cost-effective maintenance and repair, enhances understanding of vehicle systems, aids in preventative maintenance. Target Audience: Porsche 928 owners, independent mechanics, automotive enthusiasts interested in the 928. 📋 Manual Details Coverage Areas Manual Type: Service and Repair Manual Coverage Scope: Comprehensive for all major mechanical, electrical, and body systems across the specified model years. Information Provided: Maintenance schedules, repair procedures, troubleshooting guides, diagnostic information, specifications, diagrams. Page Count Estimated Page Count: Thousands of pages (typical for comprehensive Porsche service manuals covering multiple years and variants) Language Language: English Format File Format: PDF Print Quality: Fully Printable (high resolution for clarity) Digital Features: Zoom IN/OUT capability, searchable text (optimised for digital use) Delivery Delivery Method: Instant Download Requirements Software Requirements: Adobe PDF Reader, WinZip (or equivalent decompression software) Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine Systems: Engine mechanicals (cylinder head, block, pistons, crankshaft, camshafts), lubrication system, fuel system (injection, carburetion on early models), ignition system, exhaust system, cooling system, air intake system. Transmission Systems: Manual transmission (G28/G36), Automatic transmission (Tiptronic on later models), clutch, drive axles, differentials. Chassis Systems: Suspension (front and rear, including transaxle design), steering system (power steering), braking system (including ABS), wheels and tires. Electrical Systems: Battery, charging system (alternator), starting system, lighting system (headlights, taillights, interior), wiring harnesses, fuses and relays, control modules (ECU), instrumentation, climate control electricals, power windows, locks, seats. Body And Interior: Body structure, body panels, doors, hood, trunk, bumpers, glass, trim, seats, dashboard, carpeting, sound insulation, climate control system (HVAC). Emission Control: Emission control systems, catalytic converters, oxygen sensors, evaporative emission control (EVAP). Procedures Included Maintenance Procedures: Oil changes, filter replacements, spark plug service, fluid checks and changes (coolant, brake fluid, transmission fluid, power steering fluid), belt inspection and replacement, air filter replacement. Repair Procedures: Engine overhaul, transmission repair, brake caliper/rotor replacement, suspension component replacement, electrical component troubleshooting and replacement, fuel injector service, cooling system repairs. Troubleshooting: Diagnostic trees, symptom-based troubleshooting, fault code interpretation (where applicable). Technical Specifications: Torque specifications, clearances, fluid capacities, electrical system diagrams, engine specifications (bore, stroke, compression ratio), performance data. Technical Depth Depth Of Coverage: Detailed, from routine maintenance to major component overhauls and complex diagnostic procedures. Diagrams And Illustrations: Includes detailed wiring diagrams, exploded views, and step-by-step procedural illustrations. 📊 Manual Specifications File Format Digital Format: PDF Print Quality Printability: High-resolution for clear printing of all pages, including diagrams and schematics. Binding Type Binding Type Digital: N/A (Digital Download) Paper Type Paper Type Digital: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Layout: V8 Displacement Early Models: 4.5 Liters (4474 cc) Displacement Later Models: 4.7L, 5.0L, 5.4L Performance Horsepower Early Models: Approx. 240-250 hp (DIN) Horsepower Later Models: Up to 326 hp (928 GTS) Torque Early Models: Approx. 360 Nm (265 lb-ft) Torque Later Models: Up to 490 Nm (361 lb-ft) (928 GTS) Fuel System Fuel Delivery Early Models: Bosch K-Jetronic mechanical fuel injection Fuel Delivery Later Models: Bosch L-Jetronic electronic fuel injection, DME (Digital Motor Electronics) Fuel Type: Premium Unleaded Gasoline Engine Construction Engine Block Material: Aluminum Alloy Cylinder Heads: Aluminum Alloy, DOHC (Dual Overhead Camshafts) 🔧 Transmission Standard Standard Transmission Type: 5-speed manual transaxle (G28/G36) Optional Optional Transmission Type: 3-speed automatic (early models), 4-speed automatic (later models, including Tiptronic on some 928 S4/GT/GTS) Features Transaxle Design Benefit: Excellent weight distribution (near 50/50) for improved handling and performance. 📐 Dimensions Exterior Body Style: 2-door Coupe Length: Varies by year and model, approx. 4520-4650 mm (178-183 in) Width: Varies by year and model, approx. 1780-1800 mm (70-71 in) Height: Varies by year and model, approx. 1280-1310 mm (50-52 in) Weights Curb Weight: Varies by year and model, approx. 1500-1700 kg (3300-3750 lbs) Wheelbase: Approx. 2500 mm (98.4 in) 🛡️ Safety Features Ratings Crash Test Data: Limited formal crash test data available for early models, but designed with significant structural integrity. Active Features Braking System: Four-wheel disc brakes, often with ventilated front...

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Typ: Autos

Anbieter:

Art.-Nr: 359158

Sammlungen: ALL Porsche

Verfügbarkeit: Auf Lager

Stichworte: 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 928 Car Cars Porsche

Produktvarianten

Beschreibung

🏷️ Basic Information

Identification

Make:

Porsche

Model:

Model Years Covered:

1978, 1979, 1980, 1981, 1982, 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995

Vehicle Generation:

First Generation (1978-1986) and Second Generation (1987-1995)

Codes

Chassis Codes:

928, 928 S, 928 S2, 928 S3, 928 S4, 928 GT, 928 GTS

👋 Introduction

Market Position

Vehicle Class:

Grand Tourer (GT), Sports Car

Unique Selling Proposition:

Front-engine, rear-wheel-drive V8 grand tourer with transaxle, offering a blend of luxury, performance, and Porsche engineering.

Competitive Analysis

Key Competitors:

Ferrari 400/412, Aston Martin V8 Vantage, Jaguar XJ-S, Mercedes-Benz SEC models, BMW 8 Series (later).

Key Features

Design Philosophy:

Designed as a more practical and comfortable alternative to contemporary mid-engined sports cars, emphasizing long-distance touring.

Technical Innovation:

Transaxle design (engine front, gearbox rear) for optimal weight distribution, advanced (for its time) independent suspension, V8 engine.

Manual Utility

Benefit To Owner:

Enables cost-effective maintenance and repair, enhances understanding of vehicle systems, aids in preventative maintenance.

Target Audience:

Porsche 928 owners, independent mechanics, automotive enthusiasts interested in the 928.

📋 Manual Details

Coverage Areas

Manual Type:

Service and Repair Manual

Coverage Scope:

Comprehensive for all major mechanical, electrical, and body systems across the specified model years.

Information Provided:

Maintenance schedules, repair procedures, troubleshooting guides, diagnostic information, specifications, diagrams.

Page Count

Estimated Page Count:

Thousands of pages (typical for comprehensive Porsche service manuals covering multiple years and variants)

Language

Language:

English

Format

File Format:

Print Quality:

Fully Printable (high resolution for clarity)

Digital Features:

Zoom IN/OUT capability, searchable text (optimised for digital use)

Delivery

Delivery Method:

Instant Download

Requirements

Software Requirements:

Adobe PDF Reader, WinZip (or equivalent decompression software)

Operating System Compatibility:

All Versions of Windows & Mac

📖 Manual Coverage

Systems Covered

Engine Systems:

Engine mechanicals (cylinder head, block, pistons, crankshaft, camshafts), lubrication system, fuel system (injection, carburetion on early models), ignition system, exhaust system, cooling system, air intake system.

Transmission Systems:

Manual transmission (G28/G36), Automatic transmission (Tiptronic on later models), clutch, drive axles, differentials.

Chassis Systems:

Suspension (front and rear, including transaxle design), steering system (power steering), braking system (including ABS), wheels and tires.

Electrical Systems:

Battery, charging system (alternator), starting system, lighting system (headlights, taillights, interior), wiring harnesses, fuses and relays, control modules (ECU), instrumentation, climate control electricals, power windows, locks, seats.

Body And Interior:

Body structure, body panels, doors, hood, trunk, bumpers, glass, trim, seats, dashboard, carpeting, sound insulation, climate control system (HVAC).

Emission Control:

Emission control systems, catalytic converters, oxygen sensors, evaporative emission control (EVAP).

Procedures Included

Maintenance Procedures:

Oil changes, filter replacements, spark plug service, fluid checks and changes (coolant, brake fluid, transmission fluid, power steering fluid), belt inspection and replacement, air filter replacement.

Repair Procedures:

Engine overhaul, transmission repair, brake caliper/rotor replacement, suspension component replacement, electrical component troubleshooting and replacement, fuel injector service, cooling system repairs.

Troubleshooting:

Diagnostic trees, symptom-based troubleshooting, fault code interpretation (where applicable).

Technical Specifications:

Torque specifications, clearances, fluid capacities, electrical system diagrams, engine specifications (bore, stroke, compression ratio), performance data.

Technical Depth

Depth Of Coverage:

Detailed, from routine maintenance to major component overhauls and complex diagnostic procedures.

Diagrams And Illustrations:

Includes detailed wiring diagrams, exploded views, and step-by-step procedural illustrations.

📊 Manual Specifications

File Format

Digital Format:

Print Quality

Printability:

High-resolution for clear printing of all pages, including diagrams and schematics.

Binding Type

Binding Type Digital:

N/A (Digital Download)

Paper Type

Paper Type Digital:

N/A (Digital Download)

⚙️ Engine Specifications

Primary Engine

Engine Layout:

Displacement Early Models:

4.5 Liters (4474 cc)

Displacement Later Models:

4.7L, 5.0L, 5.4L

Performance

Horsepower Early Models:

Approx. 240-250 hp (DIN)

Horsepower Later Models:

Up to 326 hp (928 GTS)

Torque Early Models:

Approx. 360 Nm (265 lb-ft)

Torque Later Models:

Up to 490 Nm (361 lb-ft) (928 GTS)

Fuel System

Fuel Delivery Early Models:

Bosch K-Jetronic mechanical fuel injection

Fuel Delivery Later Models:

Bosch L-Jetronic electronic fuel injection, DME (Digital Motor Electronics)

Fuel Type:

Premium Unleaded Gasoline

Engine Construction

Engine Block Material:

Aluminum Alloy

Cylinder Heads:

Aluminum Alloy, DOHC (Dual Overhead Camshafts)

🔧 Transmission

Standard

Standard Transmission Type:

5-speed manual transaxle (G28/G36)

Optional

Optional Transmission Type:

3-speed automatic (early models), 4-speed automatic (later models, including Tiptronic on some 928 S4/GT/GTS)

Features

Transaxle Design Benefit:

Excellent weight distribution (near 50/50) for improved handling and performance.

📐 Dimensions

Exterior

Body Style:

2-door Coupe

Length:

Varies by year and model, approx. 4520-4650 mm (178-183 in)

Width:

Varies by year and model, approx. 1780-1800 mm (70-71 in)

Height:

Varies by year and model, approx. 1280-1310 mm (50-52 in)

Weights

Curb Weight:

Varies by year and model, approx. 1500-1700 kg (3300-3750 lbs)

Wheelbase:

Approx. 2500 mm (98.4 in)

🛡️ Safety Features

Ratings

Crash Test Data:

Limited formal crash test data available for early models, but designed with significant structural integrity.

Active Features

Braking System:

Four-wheel disc brakes, often with ventilated front rotors. ABS (Anti-lock Braking System) introduced on later models (e.g., 928 S4).

Steering System:

Power-assisted rack and pinion, some models featured passive rear-wheel steering (HSC - High Compliance Steering).

Passive Features

Occupant Protection:

Three-point seatbelts, padded dashboard, energy-absorbing steering column, reinforced body structure.

Lighting:

Aerodynamic pop-up headlights for reduced drag, halogen or H4 headlights for improved illumination.

💡 Technology Features

Infotainment

Audio System:

Factory-installed cassette decks, AM/FM radios, optional CD players on later models. Sound system quality improved over the years.

Driver Assistance

Available on later models (e.g., 928 S4 and beyond).

Cruise Control:

Standard on most models, electronic control.

Connectivity

Internal Systems:

Onboard diagnostics (OBD) implementation evolved over the years, becoming more sophisticated with later models.

Comfort Features

Climate Control:

Automatic climate control became standard on many later models, offering precise temperature management.

Seating:

Power-adjustable front seats, often with memory functions on higher trims. Sport seats available.

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically 7,500-10,000 miles or annually, depending on driving conditions (refer to manual for specifics).

Timing Belt Interval:

Crucial component; typically recommended replacement every 30,000-60,000 miles or 4-5 years due to risk of catastrophic engine damage if it fails. Manual will specify exact interval and procedures.

Coolant Flush:

Recommended every 2-3 years or as per manual specification.

Fluid Specifications

Engine Oil:

High-quality synthetic oil, viscosity typically 5W-40 or 10W-40 (confirm with manual for specific model year and climate).

Transmission Fluid Manual:

GL-4 or GL-5 gear oil, specific viscosity depends on model and year.

Transmission Fluid Automatic:

Dexron III (or equivalent) for early automatics, later models may use different specs. Crucial to verify.

Brake Fluid:

DOT 4 or DOT 5.1 (refer to manual, as DOT 5 may be incompatible with some seals).

Power Steering Fluid:

Typically Pentosin CHF 11S or similar hydraulic fluid (verify with manual).

Known Issues

Common Wear Items:

Timing belt, water pump, fuel lines (especially older rubber components), cooling system hoses, fuel accumulators, door seals, suspension bushings, CV joints.

Electrical Gremlins:

Can be susceptible to aging electrical connectors, dashboard illumination issues, and issues with the comfort control unit.

Fuel System Issues:

Clogged fuel injectors (K-Jetronic), aging fuel pumps, and degradation of fuel lines.

📚 Vehicle History

Brand Heritage

Porsche Legacy:

Porsche is renowned for its engineering excellence, racing pedigree, and iconic sports car designs.

Model Evolution

Initial Concept:

Conceived as a successor to the 911, offering a more refined and comfortable GT experience.

Key Upgrades Through Years:

Engine displacement increases, introduction of 4-valve heads (928 S), aerodynamic enhancements (S4), increased power and torque, introduction of ABS and improved interior features.

Production

Production Start:

Production End:

Manufacturing Location:

Stuttgart, Germany

Total Production Numbers:

Approximately 61,000 units worldwide.

🏆 Awards & Recognition

Recognitions

Industry Acclaim:

While specific awards are less documented for this model than contemporary ones, the 928 was recognized for its engineering and design innovations.

Motor Trend Car Of The Year:

While not winning the US Motor Trend Car of the Year, it received significant praise and was often featured in automotive publications for its performance and innovation.

Ratings

Performance Reviews:

Consistently praised for its high-speed stability, powerful V8 engine, and comfortable ride.