🏷️ Basic Information Identification Make: Mazda Model: Miata Product Name: Mazda MIATA Service Repair Manual 1990-2005 Generation Na Miata Generation I: 1989–1997 (NA) Nb Miata Generation Ii: 1998–2005 (NB) Codes Na Chassis Code: NA Nb Chassis Code: NB 👋 Introduction Market Position Segment: Lightweight two-seater convertible sports car. Target Audience: Enthusiasts, DIY mechanics, owners seeking to maintain and repair their vehicles. Competitive Analysis Competitors: Lotus Elise (later years), Triumph Spitfire (historical), various affordable European sports cars. Advantage: Reliability, affordability, widespread parts availability, simple mechanicals. Key Features Manual Selling Point: Covers ALL repairs from brakes to wiring to engine to transmission, empowering DIY owners. Vehicle Philosophy: Jinba Ittai (Horse and Rider as One) - driver-focused, lightweight, balanced. 📋 Manual Details Coverage Areas Engine Mechanics: Yes Fuel System: Yes Ignition System: Yes Cooling System: Yes Exhaust System: Yes Transmission Manual: Yes Transmission Automatic: Yes Clutch System: Yes Drivetrain Axles: Yes Suspension Front: Yes Suspension Rear: Yes Steering System: Yes Brake System Front: Yes Brake System Rear: Yes Wheel Drive System: Yes Electrical System Overview: Yes Wiring Diagrams: Yes Lighting System: Yes Instrument Panel: Yes Body And Chassis: Yes Interior Trim: Yes Exterior Trim: Yes Climate Control HVAC: Yes Safety Systems Airbags: Yes Troubleshooting: Yes Maintenance Schedules: Yes Page Count Estimated Page Count: Extensive (Specific count not provided, but comprehensive coverage implies thousands of pages) Manual Type Type: Service and Repair Manual Language Language: English Format Format: Digital (likely PDF, often sold as downloadable or on CD/DVD) 📖 Manual Coverage Systems Covered Engine Management: ECU diagnostics, sensors, actuators, emissions control. Chassis And Body: Frame, body panels, doors, hinges, locks, glass, bumpers, corrosion prevention. Procedures Included Routine Maintenance: Oil changes, filter replacements, spark plug replacement, fluid checks and top-offs. Engine Overhaul: Engine disassembly, inspection, reassembly, piston rings, bearings, cylinder head, valve train. Transmission Rebuild: Manual and automatic transmission disassembly, clutch replacement, gear synchronization, fluid service. Brake Service: Brake pad/shoe replacement, rotor/drum resurfacing or replacement, caliper overhaul, brake fluid flush. Electrical Diagnostics: Circuit tracing, component testing, troubleshooting electrical faults using wiring diagrams. Suspension And Steering Repair: Component replacement (shocks, struts, ball joints, tie rods), alignment procedures. Technical Depth Depth: Comprehensive, covering everything from basic adjustments to complete component overhauls and diagnostics. 📊 Manual Specifications File Format Digital Format: PDF (typically, allowing for searchability and easy printing) Print Quality Print Recommendation: High quality for clarity of diagrams and technical illustrations. Binding Type Physical Binding: N/A (for digital format) - If printed, typically comb-bound or perfect bound for durability. Paper Type Physical Paper: N/A (for digital format) - If printed, durable, matte finish paper suitable for workshop environments. ⚙️ Engine Specifications Primary Engine Na Engine Type: Inline 4-cylinder, DOHC, 16-valve Displacement Na: 1.6 Liters (1598 cc) Engine Codes Na: B6ZE (NA1), B6ZE-M (NA6) Horsepower Na: 115-130 hp (depending on year and emissions standards) Torque Na: 100-105 lb-ft (depending on year) Primary Engine Nb Engine Type: Inline 4-cylinder, DOHC, 16-valve Displacement Nb: 1.8 Liters (1839 cc) Engine Codes Nb: BP-Z3 (NB1), BP-ZE (NB2) Horsepower Nb: 140-145 hp (NB1), 142-155 hp (NB2, including Mazdaspeed Turbo with 178 hp) Torque Nb: 110-117 lb-ft (NB1), 117-133 lb-ft (NB2) Performance 0-60 Mph Na: Approx. 7.5 - 8.5 seconds 0-60 Mph Nb: Approx. 6.5 - 7.5 seconds Fuel System Fuel Delivery: Electronic Fuel Injection (EFI) Recommended Fuel: 87 Octane (minimum), 91 Octane recommended for optimal performance 🔧 Transmission Standard Na Standard Transmission: 5-speed manual (Mazda Type B) Nb Standard Transmission: 5-speed manual (Mazda Type B), 6-speed manual (NB2) Optional Na Optional Transmission: 4-speed automatic (Jatco 4E35) Nb Optional Transmission: 4-speed automatic (Jatco 4E35) Features Clutch Type: Hydraulically actuated dry single-plate Differential: Open differential (standard on most models), Viscous Limited Slip Differential (VLSD) available on some trims/options. 📐 Dimensions Exterior Length: NA: ~155.4 in. (3947 mm), NB: ~157.3 in. (4000 mm) Width: NA: ~66.1 in. (1680 mm), NB: ~66.1 in. (1680 mm) Height: NA: ~48.0 in. (1219 mm), NB: ~48.6 in. (1234 mm) Wheelbase: NA: ~89.2 in. (2265 mm), NB: ~89.2 in. (2265 mm) Cargo Trunk Volume: Approx. 4.4 cu ft (125 L) Weights Curb Weight: NA: ~2160-2300 lbs (980-1045 kg), NB: ~2300-2450 lbs (1045-1110 kg) 🛡️ Safety Features Ratings NHTSA Driver Side Frontal Impact Na: 4/5 Stars (Early models) IIHS Side Impact Na: Acceptable (early models) Active Features ABS: Optional on NA models (standard on later NA and most NB models) Passive Features Airbags Driver: Standard (dual stage on later NB models) Airbags Passenger: Standard (on most NB models, optional/unavailable on early NA) Roll Hoop Structure: Integrated into windshield frame and behind seats for occupant protection. 💡 Technology Features Infotainment Na Audio System: Basic AM/FM/Cassette or CD player. Upgradeable for modern head units. Nb Audio System: Upgraded AM/FM/CD player, optional Bose premium audio system. Driver Assistance ABS Availability: Optional on earlier NA, standard on later NA and NB models. Traction Control: Available on...
Optional on earlier NA, standard on later NA and NB models.
Traction Control:
Available on some higher-spec NB models.
Connectivity
Connectivity Features:
Minimal by modern standards; focused on core driving experience. Auxiliary input and modern infotainment system upgrades are common owner modifications.
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 5,000 miles (8,000 km) or 6 months, whichever comes first (using synthetic oil).
Timing Belt Replacement Na:
Recommended every 60,000 miles (96,000 km) or 5 years, due to interference engine design.
Timing Chain Replacement Nb:
NB engines use a timing chain, generally considered maintenance-free for the life of the engine, but inspection is recommended.
Coolant Flush:
Every 30,000 miles (48,000 km) or 2 years.
Spark Plug Replacement:
Every 60,000 miles (96,000 km) for platinum or iridium plugs.
Fluid Specifications
Engine Oil Type Na:
API SG or SH, SAE 5W-30 or 10W-30 (check owner's manual for specific climate recommendations)
Engine Oil Type Nb:
API SJ or SL, SAE 5W-30 or 10W-30 (check owner's manual)
Coolant Type:
Ethylene glycol-based antifreeze, Mazda Super Long Life Coolant (FL22) or equivalent.
Transmission Fluid Manual:
GL-4 SAE 75W-90 gear oil.
Transmission Fluid Automatic:
Dexron III or Mercon automatic transmission fluid.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Known Issues
Na Common Issue 1:
Oil seal leaks (crankshaft, camshaft).
Na Common Issue 2:
Radiator and hose degradation.
Na Common Issue 3:
Window regulator failure.
Na Common Issue 4:
Sludge buildup in engine due to infrequent oil changes.
Nb Common Issue 1:
Camshaft sensor failure (NB1).
Nb Common Issue 2:
Variable Valve Timing (VVT) issues (NB2).
Nb Common Issue 3:
Seat fabric wear and tear.
Nb Common Issue 4:
Headlight pop-up mechanism issues.
📚 Vehicle History
Brand Heritage
Brand Focus:
Mazda historically produced practical and reliable vehicles, but the Miata marked a return to affordable, pure sports cars.
Model Evolution
Concept:
Inspired by classic British roadsters like the Lotus Elan and MG MGB, aiming for lightweight, balanced handling and driver engagement.
Na Generation Launch:
February 1989 at the Chicago Auto Show.
Nb Generation Launch:
1998, retaining the core philosophy but with updated styling and engineering.
Production
Manufacturing Location:
Hiroshima, Japan.
Sales Figures Global:
Over 500,000 units produced across both generations.
🏆 Awards & Recognition
Recognitions
Car And Driver 10 Best:
Car and Driver's 10Best list multiple times (NA and NB generations).
Road And Track Recognition:
Consistently praised by automotive journalists for its handling and driving purity.
Ratings
Value Retention:
Excellent, especially for well-maintained examples, due to its enduring appeal and cult status.
Certifications
Automotive Hall Of Fame:
Inducted into the Automotive Hall of Fame as a milestone vehicle.
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