🏷️ Basic Information Identification Make: Porsche Model: 911 (964 Generation) Year: 1989-1993 Codes Internal Model Code: 964 Generation Generation Name: 964 Generation Years: 1989-1994 (with 1989 being the initial launch year, and this manual covering up to 1993 models) 👋 Introduction Market Position Vehicle Segment: Luxury Sports Car / Grand Tourer Target Audience: Enthusiasts, owners, and independent repair shops specializing in air-cooled Porsche models. Competitive Analysis Competitors: Ferrari 328/348, Lamborghini Countach/Diablo (early), Chevrolet Corvette C4 ZR-1. Key Features Manual Advantage: Digital format allows for easy zooming, searching, and portability. Directly corresponds part numbers to specific pages for efficient use. Vehicle Innovation: The 964 generation marked a significant modernization of the 911, introducing Tiptronic automatic transmission, coil springs replacing torsion bars, power steering, and ABS. 📋 Manual Details Coverage Areas Models Covered: 1989, 1990, 1991, 1992, 1993 Porsche 911-964 (all variants including Carrera 2, Carrera 4, Targa, Cabriolet, Turbo variants if applicable to the 964 platform within these years) Page Count Page Count Estimate: Not explicitly stated, but typical factory service manuals of this era are extensive, likely exceeding 1000 pages across various volumes or sections. Manual Type Type: Factory Service Repair Manual (Electronic Version) Language Language: English Format Format: PDF 📖 Manual Coverage Systems Covered Electrical System: Comprehensive coverage including wiring diagrams, component locations, diagnostic procedures for all electrical systems (lighting, ignition, fuel injection, HVAC, power accessories, ABS, etc.) Engine Mechanical: Detailed procedures for engine disassembly, inspection, assembly, and overhaul for the M64 engine family. Includes valve train, lubrication, cooling, intake, and exhaust systems. Fuel System: In-depth coverage of the fuel injection system (Bosch Motronic), fuel pump, injectors, fuel lines, fuel tank, and evaporative emissions control. Power Unit: Encompasses the entire powertrain, including engine (M64 flat-six), engine management, ignition, and exhaust systems. Transmission Drivetrain: Coverage for both the G50 manual gearbox and the Tiptronic automatic transmission (if applicable to the covered years/models), including clutch, drive axles, differentials, and AWD system for Carrera 4 models. Suspension Steering: Detailed information on front and rear suspension components, shock absorbers, springs, anti-roll bars, bushings, steering rack, power steering system, and wheel alignment specifications. Brakes: Comprehensive brake system coverage including hydraulic systems, master cylinder, brake lines, calipers, rotors, pads, ABS, and parking brake. Body Chassis: Information on body panels, structural components, doors, windows, bumpers, and corrosion protection. HVAC: Details on the climate control system, including operation, troubleshooting, and component replacement for the air conditioning and heating systems. Procedures Included Maintenance: Scheduled maintenance procedures, fluid checks and changes, filter replacements, spark plug service, belt inspections, and general upkeep. Troubleshooting: Systematic diagnostic flowcharts and procedures for identifying and resolving common and complex issues across all vehicle systems. Repair Overhaul: Step-by-step instructions for component removal, installation, repair, and rebuilding for major systems (engine, transmission, brakes, suspension, etc.). Diagnostic Testing: Procedures for using specialized tools and equipment for diagnosing electrical and mechanical faults, including DME (Digital Motor Electronics) system diagnostics. Rigging Information: Specific instructions and precautions for lifting, towing, and handling the vehicle, including jacking points and recommended lifting equipment. Technical Depth Depth: Comprehensive, from basic fluid checks and adjustments to complete engine and transmission rebuilds, including detailed torque specifications and tolerances. 📊 Manual Specifications File Format Compatibility: Compatible with all versions of Windows and Mac operating systems. Reader Requirement: Requires Adobe PDF Reader. Print Quality Clarity: High clarity, allowing for zoom functionality to view intricate details and diagrams. Binding Type Type: Electronic (PDF) - No physical binding. Paper Type Type: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Code: M64 (variants M64/01, M64/02, M64/03, etc.) Engine Configuration: Naturally aspirated, air-cooled, horizontally opposed (flat) six-cylinder Displacement: 3.6 liters (3600 cc) Performance Horsepower Range: Approximately 247 hp (Carrera 2/4) to 320 hp (911 Turbo 3.6, though Turbo variants might be outside the scope of a general 964 manual unless specified) Torque Range: Approximately 228 lb-ft (Carrera 2/4) to 289 lb-ft (911 Turbo 3.6) Fuel System Fuel Delivery: Bosch Motronic M2.1, M2.3, M2.7 fuel injection and ignition management Fuel Type: Premium Unleaded Gasoline (91-92 Octane) 🔧 Transmission Standard Type: G50 5-speed manual transaxle Optional Type: Tiptronic (4-speed automatic with manual shifting mode) - introduced in later 964 models Features Carrera 4 Drivetrain: Viscous coupling center differential for all-wheel drive system on Carrera 4 models. 📐 Dimensions Exterior Length: Approx. 4250 mm (167.3 in) Width: Approx. 1650 mm (65.0 in) Height: Approx. 1310 mm (51.6 in) Weights Curb Weight: Approx. 1450-1550 kg (3197-3417 lbs) depending on configuration (Carrera 2 vs Carrera 4, Coupe vs Cabriolet) 🛡️ Safety Features Ratings Crash Safety Era: Modern safety standards for the late 80s/early 90s, including crumple zones and safety cage, but without modern airbag prevalence or side-impact structures of later vehicles. Active Features ABS: Anti-lock Braking System (ABS) - standard on most 964 models AWD: All-wheel drive (Carrera 4 models) providing enhanced traction and stability....