🏷️ Basic Information Identification Make: Mercury Model: Topaz Year: 1990 Codes Platform Code: Ford 2nd Generation Tempo/Topaz (DE2) 👋 Introduction Market Position Positioning: Compact/Mid-size Sedan and Wagon, positioned as an affordable and practical vehicle within the Ford family. Competitive Analysis Competitors: Chevrolet Cavalier, Dodge Neon, Honda Civic, Toyota Corolla Key Features Unique Selling Points: Offered with FWD and optional AWD (in later models), comfortable ride, spacious interior for its class, efficient engines. 📋 Manual Details Coverage Areas Primary Coverage: Service and Repair Secondary Coverage: Maintenance, Diagnostics, Troubleshooting, Specifications, Wiring Diagrams Page Count Estimated Page Count: 1500+ Manual Type Type: Digital Service Manual Software Language Language: English Format Format: Web-based Access (Requires Internet Connection and Web Browser) 📖 Manual Coverage Systems Covered Engine: 2.3L HEFI (OHC), 3.0L Vulcan EFI (OHV) Fuel System: EFI, Fuel Pump, Injectors, Pressure Regulator Ignition System: Electronic Ignition (TFI Module), Spark Plugs, Coil Pack Cooling System: Radiator, Water Pump, Thermostat, Hoses, Fan Clutch Exhaust System: Catalytic Converter, Muffler, Pipes, Manifolds Transmission Manual: MT5 AXODE (Automatic Overdrive with Manual Control) Transmission Automatic: ATX (Automatic Transaxle) Drivetrain: Front-Wheel Drive, CV Axles, Differential Suspension Front: MacPherson Struts, Control Arms, Ball Joints, Sway Bar Suspension Rear: Trailing Arms, Coil Springs, Shock Absorbers, Panhard Rod Steering: Power Rack and Pinion, Steering Column, Linkage Brakes Front: Vented Disc Brakes Brakes Rear: Drum Brakes Brakes System: Master Cylinder, Power Booster, Lines, Parking Brake Electrical System: 12V Battery, Alternator, Starter, Fuses, Relays Lighting System: Headlights, Taillights, Interior Lights, Bulbs Body Exterior: Body Panels, Doors, Hood, Trunk, Bumpers, Glass Body Interior: Seats, Dashboard, Trim Panels, Carpeting, Seatbelts HVAC: Heating, Ventilation, Air Conditioning (Compressor, Evaporator, Condenser, Blower) Wiring Diagrams: Comprehensive Electrical Schematics for All Systems Procedures Included Maintenance: Oil Change, Filter Replacement, Fluid Checks, Tune-ups, Belt Inspection/Replacement Troubleshooting: Diagnostic Charts, Symptom-Based Troubleshooting Guides Repair: Component Removal and Installation, Adjustments, Rebuild Procedures Diagnostics: Engine Performance Diagnostics, Electrical System Diagnostics, HVAC System Diagnostics Alignment: Front and Rear Wheel Alignment Specifications and Procedures Technical Depth Depth: Factory-Level Detail, Suitable for Professional Technicians and Advanced DIYers 📊 Manual Specifications File Format Format: Digital, Web-Accessible Print Quality Quality: High-Resolution, Clear Text and Diagrams Binding Type Type: N/A (Digital) Paper Type Type: N/A (Digital) ⚙️ Engine Specifications Primary Engine 2.3L Hefi: 2.3 Liter Inline-4, Overhead Cam (OHC), 100 hp @ 4600 rpm, 135 lb-ft @ 2800 rpm Secondary Engine 3.0L Vulcan: 3.0 Liter V6, Overhead Valve (OHV), 140 hp @ 4800 rpm, 165 lb-ft @ 3000 rpm Performance Horsepower Range: 100-140 hp Torque Range: 135-165 lb-ft Fuel System Injection Type: Electronic Fuel Injection (EFI) - Multi-point for 3.0L, Throttle Body Injection (TBI) for 2.3L Fuel Type Required Octane: 87 Octane (Regular Unleaded) Oil Capacity 2.3L: 4.5 US quarts (4.3 L) with filter 3.0L: 5.0 US quarts (4.7 L) with filter Oil Specification Recommendation: API SG or SH, SAE 5W-30 (consult manual for temperature variations) 🔧 Transmission Standard Type: 5-Speed Manual (MT5 AXODE) Optional Type: 4-Speed Automatic Transaxle (ATX) Features Axode Control: Allows manual selection of gears within automatic mode. Fluid Type Atx: Mercon V Automatic Transmission Fluid (or equivalent) Fluid Capacity Atx: Approx. 7.2 US quarts (6.8 L) for initial fill 📐 Dimensions Exterior Wheelbase: 104.2 inches (2647 mm) Length: 177.4 inches (4506 mm) Width: 68.3 inches (1735 mm) Height: 53.5 inches (1359 mm) (Sedan) Weights Curb Weight Range: 2600-2800 lbs (1179-1270 kg) 🛡️ Safety Features Ratings NHTSA Rollover Resistance: 3-star (for sedan variants) Active Features ABS: Optional Anti-lock Braking System (ABS) on front wheels Passive Features Seatbelts: Front 3-point seatbelts, Rear lap belts Airbags: Driver's side airbag standard for 1990 model year. 💡 Technology Features Infotainment Audio System: AM/FM Stereo Radio, optional Cassette Player, optional Premium Sound System. Driver Assistance Cruise Control: Available as an option on most trims. Connectivity Telematics: Not applicable for this model year. 🔧 Maintenance Service Intervals Oil Change: Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, whichever comes first (recommend using synthetic for longer intervals). Air Filter: Inspect every 15,000 miles (24,000 km), replace as needed. Spark Plugs: Replace every 30,000-50,000 miles (48,000-80,000 km) depending on plug type. Transmission Fluid: Change ATX fluid and filter every 30,000-50,000 miles (48,000-80,000 km). Fluid Specifications Coolant: Ethylene Glycol based coolant (Ford Premium Engine Coolant or equivalent), 50/50 mix with distilled water. Brake Fluid: DOT 3 Brake Fluid. Power Steering Fluid: Mercon ATF or equivalent power steering fluid. Known Issues Engine Mounts: Can degrade over time, leading to vibration and clunking noises. Radiator Leaks: Common for original radiators to develop leaks or become clogged. Automatic Transmission: ATX can be prone to hesitation or slipping if not maintained properly. Electrical Connectors: Corrosion or loose connections in various electrical harnesses can cause intermittent issues. Exhaust Leaks: Gaskets and pipe sections can rust and develop leaks. Suspension Wear: Bushings and ball joints can wear out, affecting ride and handling. 📚 Vehicle History Brand Heritage...