🏷️ Basic Information Identification Make: Citroën Model: ZX Year Range: 1990-1998 Codes Platform Code: PSA ZX Internal Project Name: Project 'S-90' 👋 Introduction Market Position Segment: Compact family hatchback, positioned as a practical and affordable European offering. Key Selling Points: Comfortable ride, innovative design, good packaging, fuel efficiency. Competitive Analysis Key Rivals: Ford Escort, Volkswagen Golf, Opel Astra, Renault Mégane, Peugeot 306. Key Features Design Innovations: Innovative rear beam suspension (torsion bars), distinctive dashboard layout, emphasis on occupant comfort and ergonomics. Chassis Technology: PSA's renowned chassis engineering, often featuring an agile and comfortable ride with good road holding. 📋 Manual Details Coverage Areas Primary Coverage: Mechanical, Electrical, Bodywork, Diagnostics, Maintenance Specific Systems Covered: Engine, Transmission, Suspension, Brakes, Steering, Fuel System, Cooling System, Exhaust System, HVAC, Body Control Modules, Lighting, Instrument Panel, SRS (Airbag) System Page Count Estimated Pages: 1500+ Manual Type Type: Workshop Service Repair Manual Language Language: English Format Format: Digital (PDF) 📖 Manual Coverage Systems Covered Powertrain: Comprehensive coverage of all engine variants, including petrol and diesel, manual and automatic transmissions, clutch, drivetrain components. Chassis And Suspension: Detailed information on front and rear suspension (including hydropneumatic elements if applicable to certain export models), steering system, braking system (including ABS if equipped), wheels and tires. Electrical System Overview: Extensive electrical schematics, component locations, wiring diagrams for all major systems, including lighting, ignition, charging, starting, infotainment, and driver controls. Procedures Included Maintenance: Scheduled maintenance procedures, fluid changes, filter replacements, lubrication points, inspections. Repair And Overhaul: Step-by-step instructions for major component removal, disassembly, inspection, repair, and reassembly of engine, transmission, suspension, brakes, steering, and body components. Diagnostics And Troubleshooting: Fault finding guides, diagnostic trouble codes (DTCs) for relevant ECUs, common problems and their solutions, component testing procedures. Technical Depth Level: Professional workshop level, suitable for experienced mechanics and advanced DIY enthusiasts. Specific Procedures: Torque specifications for all fasteners, machining limits for engine components, calibration procedures for steering and suspension components, diagnostic flowcharts. 📊 Manual Specifications File Format Searchability: Fully searchable PDF text for quick information retrieval. Print Quality Resolution: High-resolution scans of original factory documents ensuring clarity of diagrams and text. Binding Type Physical Equivalent: Comparable to a factory-bound manual, but delivered digitally. Paper Type Digital Equivalent: Digital pages with clear, legible text and graphics. ⚙️ Engine Specifications Primary Engine Petrol Variants: 1.1L (TU1), 1.4L (TU3), 1.6L (XU5/TU5), 1.8L (XU7), 2.0L (XU10J2/J4). Diesel Variants: 1.9L (XUD7), 1.9L Turbo-D (XUD7TE/T). Performance Horsepower Range: 55 hp to 130 hp (depending on engine and trim). Torque Range: 90 Nm to 180 Nm (depending on engine). Fuel System Injection Type: Carburetted (early models) or multi-point fuel injection (MPI). Fuel Type: Unleaded Petrol (Octane 95/98 recommended for MPI), Diesel. Engine Management ECU Types: Bosch Motronic, SAGEM, Lucas (varies by engine and year). 🔧 Transmission Standard Type: 5-speed Manual Transaxle. Optional Type: 4-speed Automatic Transaxle (e.g., ZF 4HP18/20). Features Clutch Type: Dry, single-plate diaphragm spring clutch. Transmission Fluid Manual: API GL-4, SAE 75W-90 or 80W-90 gear oil. Transmission Fluid Automatic: Dexron III / Mercon ATF. 📐 Dimensions Exterior Length Hatchback: Approx. 4031 mm Width: Approx. 1670 mm Height: Approx. 1380 mm Wheelbase: Approx. 2550 mm Weights Curb Weight Range: Approx. 1050 kg - 1250 kg (depending on engine and equipment). Gross Vehicle Weight: Varies by model, typically around 1600 kg. Cargo Luggage Capacity: Approx. 350-400 litres (rear seats up). 🛡️ Safety Features Ratings Euro Ncap: Not formally rated under modern Euro NCAP protocols, but crashworthiness considered competitive for its era. Active Features Braking System: Front: Ventilated Discs; Rear: Drums (or solid discs on performance variants). ABS available on higher trims/later models. Steering Assistance: Power steering available on most variants. Passive Features Airbags: Driver airbag standard on later models, passenger airbag optional. Seatbelts: Pre-tensioned front seatbelts. Body Structure: Designed with crumple zones and a reinforced passenger cell. 💡 Technology Features Infotainment Audio System: Factory fitted radio-cassette players, often with RDS and speaker balance controls. CD players became available on later models. Dashboard Display: Digital or analogue instrument clusters, including tachometer, speedometer, fuel gauge, engine temperature, and warning lights. Driver Assistance Cruise Control: Optional on higher trim levels and larger engine variants. Connectivity Connectivity Features: Limited by era; typically only factory-fitted alarm systems or basic immobilizers. 🔧 Maintenance Service Intervals Oil Change: Every 10,000 km or 12 months, whichever comes first (depending on driving conditions). Air Filter Replacement: Every 20,000 km or 24 months. Spark Plug Replacement: Every 40,000 km (standard) or 60,000 km (platinum). Fluid Specifications Engine Oil: SAE 10W-40, API SJ or ACEA A2/B2 (check owner's manual for specific engine variant requirements). Coolant: Ethylene glycol-based antifreeze, mixture of 50% coolant and 50% distilled water. Brake Fluid: DOT 4. Power Steering Fluid: Citroën LHM Plus (if equipped with hydropneumatic suspension) or a generic ATF (for hydraulic power steering). Known Issues Suspension Wear: Rear torsion bar bearings can wear,...