🏷️ Basic Information Identification Make: Mazda Model: Miata Year: 1990 Generation Generation Name: First Generation (NA) Generation Years: 1989-1997 👋 Introduction Market Position Vehicle Segment: Lightweight, affordable sports car (Roadster/Convertible) Target Audience: Enthusiasts seeking a pure driving experience, affordable sports car ownership. Competitive Analysis Key Competitors: Lotus Elan, Triumph TR7 (historically), later models competed with Chevrolet Camaro/Pontiac Firebird Convertibles, Ford Mustang Convertible. Key Features Design Philosophy: Jinba Ittai (horse and rider as one) - driver-centric, balanced handling, lightweight construction. Powertrain Layout: Front-engine, rear-wheel-drive (RWD) Body Style: Two-door convertible Manual Benefit Diy: Empowers owners to perform their own maintenance and repairs, fostering a deeper connection with their vehicle and saving costs. 📋 Manual Details Coverage Areas Manual Type: Workshop & Service Repair Manual Language: English Format: PDF Download Compatibility: All Versions of Windows & Mac Requirements: Adobe PDF Reader 📖 Manual Coverage Systems Covered Engine Service: Detailed troubleshooting, repair, and overhaul procedures for the 1.6L DOHC engine. Transmission Service: Procedures for both the 5-speed manual and optional 4-speed automatic transmissions. Brake System: Inspection, maintenance, and repair of front disc and rear drum brakes, including ABS if equipped. Electrical System: Comprehensive coverage of wiring diagrams, component testing, and diagnostic procedures for all electrical systems. Suspension And Steering: Maintenance and repair of the double wishbone suspension, steering rack, and related components. Cooling System: Service procedures for the radiator, water pump, thermostat, and cooling fan. Fuel Injection System: Detailed information on the electronic fuel injection (EFI) system, including fuel pump, injectors, and sensors. Emission Control System: Diagnosis and repair of emission control devices and related systems. Chassis And Body: Body panel alignment, repair procedures, and chassis maintenance. Restraint System: Information on seatbelts and airbags (if applicable to the specific 1990 model, though airbags were less common). Interior Components: Service and repair procedures for interior trim, seats, and dashboard components. Differential And Drive Axle: Maintenance and repair of the rear differential and drive axles. Heater And Air Conditioning: Service procedures for the HVAC system. Engine Control System: Diagnosis and troubleshooting of the Engine Control Unit (ECU) and related sensors. Procedures Included General Maintenance: Oil changes, fluid checks, filter replacements, tire rotation, and general inspection procedures. Troubleshooting: Systematic diagnostic steps for identifying and resolving common and uncommon vehicle issues. Engine Repair: Detailed instructions for engine assembly/disassembly, cylinder head service, piston and connecting rod replacement, and crankshaft service. Transmission Repair: Transmission overhaul, clutch replacement, and gear selection mechanism repair. Brake System Repair: Brake pad/shoe replacement, caliper/wheel cylinder overhaul, brake line repair, and bleeding procedures. Electrical Troubleshooting: Testing of electrical components, circuits, and use of diagnostic tools. Suspension And Steering Repair: Replacement of ball joints, tie rod ends, shock absorbers, springs, and wheel bearings. Fuel System Service: Fuel injector cleaning, fuel filter replacement, fuel pressure testing, and fuel pump service. Wiring Diagram Interpretation: Guidance on understanding and utilizing the detailed wiring schematics for electrical diagnostics. Technical Depth Depth Level: Comprehensive (DIY to Professional Shop Level) Diagnostic Capability: Advanced diagnostic procedures and troubleshooting trees for all major systems. Repair Complexity: Covers routine maintenance to major component overhauls and rebuilds. Special Tools: Identification of necessary specialized tools and equipment for specific repairs. 📊 Manual Specifications File Format File Type: PDF Searchability: Likely searchable text within the PDF for quick information retrieval. Printability: Printable pages for hands-on use in a workshop environment. Print Quality Image Resolution: High-resolution diagrams and images for clarity. Binding Type Binding: N/A (Digital Download) Paper Type Paper Type: N/A (Digital Download) ⚙️ Engine Specifications Primary Engine Engine Code: B6ZE Engine Type: Inline 4-cylinder, DOHC (Dual Overhead Camshafts) Displacement: 1.6 Liters (1597 cc) Bore X Stroke: 78.0 mm x 83.6 mm Compression Ratio: 9.4:1 Performance Horsepower: 115 hp @ 6500 RPM (U.S. Spec) Torque: 100 lb-ft @ 5000 RPM (U.S. Spec) Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Fuel Type: Unleaded Gasoline (87 Octane Minimum Recommended) Fuel Pump Type: In-tank Electric 🔧 Transmission Standard Type: 5-Speed Manual Transmission Clutch Type: Hydraulic, Single Dry Plate Optional Type: 4-Speed Automatic Transmission Features Transmission Fluid Spec: API GL-5, SAE 75W-90 (Manual); Dexron III (Automatic) 📐 Dimensions Exterior Length: 3915 mm (154.1 inches) Width: 1675 mm (65.9 inches) Height: 1235 mm (48.6 inches) (Soft Top Up) Wheelbase: 2265 mm (89.2 inches) Front Track: 1420 mm (55.9 inches) Rear Track: 1430 mm (56.3 inches) Weights Curb Weight: 950-980 kg (2094-2160 lbs) approx. Gross Vehicle Weight Rating: Approximately 1200 kg (2645 lbs) Cargo Trunk Volume: 150 Liters (5.3 cubic feet) approx. 🛡️ Safety Features Ratings NHTSA Driver Front Impact: Not rated in modern terms, but known for its robust chassis design for its class. Passive Features Seat Belts: 3-point retractable seatbelts. Rollover Protection: Reinforced A-pillar and pop-up roll bar behind the seats (distinctive feature of the NA generation). 💡 Technology Features Infotainment Audio System: Factory AM/FM stereo with cassette player, typically 4-speaker setup....