🏷️ Basic Information Identification Make: Porsche Model: 964 Year: 1990 👋 Introduction Market Position Positioning: A crucial reference for owners and mechanics of the iconic Porsche 964, bridging the gap between owner's manuals and factory service directives. Competitive Analysis Comparison: This PDF manual offers similar coverage to traditional factory service manuals, often with superior accessibility and searchability, providing step-by-step guidance that factory-trained technicians rely on. Key Features Features: Step-by-step repair procedures, critical specifications, illustrations/pictures, maintenance schedules, disassembly/assembly instructions, cleaning and reinstallation procedures. 📋 Manual Details Coverage Areas Manual Type: Repair Service Manual Language: English Format: PDF Download Print Quality: Full Printable Zoom Capability: Yes Delivery Method: Instant Download Software Requirements: Adobe PDF Reader, WinZip Operating System Compatibility: All Versions of Windows & Mac 📖 Manual Coverage Systems Covered Engine: Complete overhaul, diagnostics, fuel system, ignition system, lubrication, cooling system, emissions control Transmission: Manual transmission (G50) service, torque converter (Tiptronic optional, not detailed here), clutch system Drivetrain: All-wheel drive system (Carrera 4), rear-wheel drive system (Carrera 2), driveshafts, differentials Suspension: Front and rear suspension, struts, shock absorbers, bushings, anti-roll bars, wheel bearings Brakes: Hydraulic system, ABS, brake calipers, rotors, brake pads, parking brake Steering: Power steering system, steering rack, steering column Electrical: Wiring diagrams, lighting, starter, alternator, battery, fuse box, relays, diagnostics, ECU (Engine Control Unit) functions Bodywork: Body panels, doors, windows, mirrors, bumpers, interior trim, convertible top mechanism (if applicable) HVAC: Heating, ventilation, and air conditioning system components and service Procedures Included Maintenance: Scheduled maintenance, oil changes, filter replacements, spark plug replacement, fluid checks and changes Disassembly Assembly: Detailed step-by-step procedures for component removal and installation Repair: Component repair and replacement for all major systems Cleaning: Component cleaning procedures as part of repair and reassembly Troubleshooting: Diagnostic procedures, common fault identification, and solutions Reinstalling: Correct reinstallation procedures to ensure proper function and safety Technical Depth Depth: Comprehensive, suitable for professional technicians and knowledgeable DIY enthusiasts 📊 Manual Specifications File Format File Type: PDF Print Quality Resolution: High resolution for clear viewing and printing Binding Type Binding: Digital (No physical binding) Paper Type Paper: Digital (No physical paper) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Flat-Six (Boxer) Engine Code: M64/01 (Carrera 2), M64/02 (Carrera 4) Performance Displacement: 3.6 Liters (3600 cc) Horsepower: 250 PS (247 hp) @ 6100 rpm Torque: 312 Nm (230 lb-ft) @ 4700 rpm Fuel System Fuel Delivery: Bosch Motronic M2.7 engine management system with multi-point fuel injection Fuel Type: Unleaded gasoline, minimum 91 octane (RON + MON)/2 🔧 Transmission Standard Transmission Type: G50 5-speed manual transaxle Optional Optional Transmission: Tiptronic automatic transmission (availability for 1990 may vary, primarily introduced later in the 964 generation) Features Gear Ratios: Specific gear ratios are detailed within the manual for both Carrera 2 and Carrera 4 models. Clutch Type: Hydraulically operated dry single-plate clutch 📐 Dimensions Exterior Length: Approx. 4250 mm (167.3 in) Width: Approx. 1775 mm (69.9 in) Height: Approx. 1310 mm (51.6 in) Weights Curb Weight: Approx. 1450 kg (3197 lbs) for Carrera 2, slightly more for Carrera 4 🛡️ Safety Features Ratings Crash Testing: While specific ratings for 1990 models are less standardized than today, the 964 features a robust chassis and passive safety elements. Active Features Active Safety: Anti-lock Braking System (ABS) as standard on most models. Passive Features Passive Safety: Reinforced safety cage, energy-absorbing crumple zones, three-point seatbelts, optional airbags (availability varies). 💡 Technology Features Infotainment Infotainment System: Factory-installed audio systems with cassette players and optional CD changers. Limited by 1990 standards, often replaced by aftermarket units. Driver Assistance Assistance Features: ABS, power steering. Connectivity Connectivity Options: None in the modern sense; limited to basic audio inputs. 🔧 Maintenance Service Intervals Oil Change: Typically every 10,000 km or 1 year, whichever comes first. Manual specifies detailed inspection points. Major Service: Refer to manual for comprehensive service schedules, often involving valve adjustments and spark plug replacement around 30,000-50,000 km. Fluid Specifications Engine Oil: Mobil 1 0W-40 or equivalent synthetic oil meeting Porsche A40 specification (check manual for precise OEM recommendation). Brake Fluid: DOT 4 or DOT 5.1 brake fluid (refer to manual for specific Porsche approval). Transmission Fluid: Gear oil for G50 transmission, specific viscosity and GL rating detailed in manual (e.g., Mobilube PTX 75W-90 or equivalent). Coolant: Glysantin G48 (blue) or equivalent, mixed with distilled water (50/50 ratio). Known Issues Common Issues: Valve adjustment requirements, potential for oil leaks (e.g., rear main seal, oil cooler seals), ABS sensor issues, worn suspension components, catalytic converter failure, DME relay failure. 📚 Vehicle History Brand Heritage Heritage: Porsche's long-standing reputation for engineering excellence and performance, building upon the legacy of the 911. Model Evolution Evolution: The 964 generation marked a significant update to the 911 platform, introducing aerodynamic bumpers, modern suspension, and improved powertrain management. Production Production Years: 1989-1994 Manufacturing Location: Stuttgart, Germany 🏆 Awards & Recognition...