🏷️ Basic Information Identification Make: Porsche Model: 944 Model Years Covered: 1989, 1990, 1991 Codes Chassis Codes: 944S2, 944Turbo (951) 👋 Introduction Market Position Vehicle Segment: Front-engine, rear-wheel-drive sports car / grand tourer Competitors: Chevrolet Camaro, Pontiac Firebird, Ford Mustang, Nissan 300ZX, Toyota Supra, BMW 3 Series Coupe Key Features Chassis Design: Transaxle layout for balanced weight distribution Engine Layout: Inline-four cylinder, front-mounted Aerodynamics: Sleek, aerodynamic styling typical of Porsche design Handling: Renowned for excellent handling characteristics and driver engagement 📋 Manual Details Coverage Areas Manual Type: Workshop Service Repair Manual Language: English Format: Digital Download (PDF) Page Count Estimated Page Count: 1500+ 📖 Manual Coverage Systems Covered Engine Mechanical: Complete engine overhaul, cylinder head, block assembly, piston and connecting rod assemblies, crankshaft, camshafts, timing belt, oil pump, lubrication system Engine Management Electronics: Engine control unit (ECU) diagnosis, sensors (MAP, TPS, O2, Coolant Temp), actuators (injectors, idle control valve), ignition system, fuel injection system (Bosch Motronic) Fuel System: Fuel pump, fuel filter, fuel lines, fuel injectors, fuel pressure regulator, fuel tank Cooling System: Radiator, coolant hoses, water pump, thermostat, expansion tank, cooling fan operation Exhaust System: Exhaust manifolds, catalytic converter (if applicable), mufflers, oxygen sensors Transmission Manual: Clutch system, gearbox overhaul, gear shift linkage, transmission fluid specifications Transmission Automatic: Automatic transmission (optional) diagnosis, fluid, seals, torque converter, electronic control unit Drivetrain: Driveshafts, CV joints, differential, rear transaxle assembly Suspension Front: MacPherson struts, control arms, bushings, anti-roll bar, wheel bearings Suspension Rear: Trailing arms, shock absorbers, springs, bushings, suspension geometry Steering System: Power steering pump, steering rack, tie rods, steering column, alignment specifications Brake System: Front and rear brake calipers, rotors, pads, brake lines, master cylinder, ABS system (Anti-lock Braking System) diagnosis and components Electrical System: Wiring diagrams, battery, alternator, starter motor, fuses, relays, lighting system, gauges, interior electronics Body And Chassis: Body panel removal and installation, doors, hood, trunk, bumpers, glass, interior trim, sound deadening Climate Control: HVAC system, A/C compressor, blower motor, heater core, refrigerant system, climate control panel Wheels And Tires: Tire sizes, wheel specifications, torque specifications, tire pressure recommendations Procedures Included Preventive Maintenance: Oil changes, filter replacements, fluid checks and changes, belt inspections and replacements, spark plug replacement, brake fluid flush Troubleshooting: Diagnostic charts, symptom-based troubleshooting, common fault identification and repair Repair Procedures: Step-by-step repair instructions for all major mechanical and electrical components Disassembly And Assembly: Detailed instructions for removing and reinstalling major components and sub-assemblies Special Tools: Identification and usage of specific Porsche tools required for certain repairs Torque Specifications: Precise torque values for all fasteners and critical components Alignment Specifications: Front and rear wheel alignment angles Technical Depth Diagnostic Information: In-depth diagnostic procedures, fault codes (OBD-I related for era), electrical schematics Rebuild Instructions: Comprehensive instructions for engine and transmission rebuilds Electrical Schematics Detail: Detailed, component-level wiring diagrams for all vehicle systems 📊 Manual Specifications File Format File Type: PDF Searchability: Searchable text content Printability: Printable pages Print Quality Image Resolution: High-resolution scans for clarity of diagrams and text Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Type: Naturally Aspirated Inline-4 (944S2), Turbocharged Inline-4 (944 Turbo/S2 Turbo) Displacement 944S2: 3.0 Liters (2990 cc) Horsepower 944S2: 208 hp @ 5800 rpm Torque 944S2: 207 lb-ft @ 4000 rpm Displacement 944Turbo: 2.5 Liters (2479 cc) Horsepower 944Turbo: 220 hp @ 6000 rpm (standard Turbo), 250 hp @ 6000 rpm (944 Turbo S) Torque 944Turbo: 245 lb-ft @ 3500 rpm (standard Turbo), 258 lb-ft @ 3500 rpm (944 Turbo S) Fuel System Fuel Injection: Bosch Motronic (DME or M) engine management with sequential fuel injection Fuel Type: Premium Unleaded Gasoline 🔧 Transmission Standard Transmission Type: 5-speed Manual Transaxle Optional Transmission Type Optional: 3-speed Automatic Transaxle (less common on later models) Features Transaxle Design: Rear-mounted transaxle for optimal weight distribution Clutch Type: Hydraulically actuated single dry plate clutch 📐 Dimensions Exterior Wheelbase: 2499 mm (98.4 inches) Length: 4250 mm (167.3 inches) Width: 1700 mm (66.9 inches) Height: 1275 mm (50.2 inches) Weights Curb Weight 944S2: Approx. 1360 kg (2998 lbs) Curb Weight 944Turbo: Approx. 1370 kg (3020 lbs) 🛡️ Safety Features Passive Features Airbags: Driver-side airbag (standard on later models/years), Passenger airbag (optional or standard on late 944S2) Seatbelts: 3-point inertia-reel seatbelts Body Construction: Integral safety cage, crumple zones Active Features ABS: Anti-lock Braking System (ABS) standard on 944S2 and Turbo models Braking System: Four-wheel disc brakes (often larger on Turbo/S2 models), ventilated front discs 💡 Technology Features Infotainment Audio System: Factory fitted or aftermarket radio/cassette player, often with amplifier integration (e.g., Blaupunkt, Porsche Sound System) Gauges: Comprehensive analog gauge cluster including tachometer, speedometer, oil pressure, oil temperature, voltmeter, fuel level Driver Assistance ABS: Anti-lock Braking System Cruise Control: Optional on some models Connectivity Connectivity Features: None (pre-digital era) 🔧 Maintenance Service Intervals Oil Change Interval: Every 5,000-7,500 miles...