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Introduction
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Market Position
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Segment:
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Executive/Luxury Car segment (European market)
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Competitive Analysis
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Key Competitors:
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Renault 25, Peugeot 505, Ford Scorpio, Mercedes-Benz W123/W124, BMW E28/E34.
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Key Features
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Design Philosophy:
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Aerodynamic 'jet-age' design, advanced hydropneumatic suspension offering exceptional ride comfort and self-leveling capabilities, front-wheel drive, and innovative directional lighting.
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Target Audience
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Intended Users:
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Professional automotive technicians, experienced DIY mechanics, and Citroën CX owners seeking to understand and maintain their vehicle.
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Manual Utility
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Value Proposition:
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Provides the in-depth knowledge necessary to correctly maintain and repair the complex systems of the Citroën CX, enabling owners to preserve its unique driving characteristics and longevity.
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Manual Coverage
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Systems Covered
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Powertrain:
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Engine (incl. petrol and diesel variants), cooling system, fuel system, exhaust system, clutch, manual and automatic transmissions.
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Chassis And Suspension:
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Hydropneumatic suspension system (unique to CX), steering system, brakes (hydraulic, front discs, rear discs/drums), wheel bearings, suspension components (springs, dampers, linkages).
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Electrical And Body:
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Engine management electronics, lighting systems, dashboard instrumentation, power accessories, bodywork repair (including panel replacement, door mechanisms, glass), interior trim, HVAC (Heating, Ventilation, and Air Conditioning).
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Fuel System:
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Detailed schematics and repair procedures for carbureted and fuel-injected systems, including fuel pumps, injectors, fuel lines, and pressure regulators.
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Braking System:
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Thorough explanations of the hydraulic braking system, including master cylinder, brake lines, calipers, pads, and rear drum/disc assemblies. Specific emphasis on the hydraulic booster operation.
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Procedures Included
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Maintenance:
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Scheduled maintenance tasks (oil changes, filter replacements, fluid checks), tune-up procedures, lubrication points.
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Repair And Overhaul:
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Detailed step-by-step instructions for component disassembly, repair, reassembly, and adjustment for all major vehicle systems.
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Diagnostics And Troubleshooting:
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Identification of common problems, diagnostic procedures, fault finding charts, electrical wiring diagrams.
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Wiring Diagrams:
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Comprehensive electrical wiring diagrams for all vehicle systems, crucial for diagnosing electrical faults.
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Torque Specifications:
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Essential torque values for critical fasteners across all mechanical systems (engine, transmission, suspension, brakes, body).
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Diagnostic Charts:
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Troubleshooting flowcharts and symptom-based diagnostic guides to aid in identifying and resolving problems efficiently.
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Technical Depth
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Depth:
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Comprehensive, suitable for professional technicians and advanced DIY enthusiasts with a good understanding of automotive mechanics and electrics. Covers everything from basic maintenance to complete engine and transmission rebuilds.
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Engine Rebuild:
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Detailed procedures for engine disassembly, component inspection, machining specifications (e.g., cylinder bore, piston clearance), and reassembly for various engine variants.
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Suspension Overhaul:
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In-depth coverage of the hydropneumatic system, including sphere replacement, fluid flushing and refilling, pressure testing, regulator adjustment, and ride height calibration.
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Engine Specifications
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Primary Engine
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Engine Range:
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Primarily 4-cylinder petrol engines: 2.0L (1985cc), 2.2L (2175cc), 2.5L (2500cc, including fuel-injected variants like CX 25 GTI), and 2.5L Turbo-Diesel.
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Performance
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Power Output Range:
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Approximately 90-140 hp for naturally aspirated petrol, up to 165-170 hp for injected and turbocharged versions. Diesel variants around 70-80 hp.
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Torque Range:
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Varies by engine, e.g., ~150-200 Nm for 2.0L, ~170-220 Nm for 2.5L and turbo variants.
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Fuel System
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Carburetion Injection:
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Carbureted (Solex, Weber) and Bosch L-Jetronic fuel injection systems depending on model and year. Diesel variants feature Bosch mechanical injection.
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Technical Details
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Engine Layout:
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Inline 4-cylinder, transverse front-wheel drive configuration.
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Maintenance
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Engine Oil Capacity:
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Approximately 4.0 - 4.5 liters (check specific model variant in manual for precise capacity).
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Transmission
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Standard
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Transmission Types:
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4-speed and 5-speed manual transmissions, 3-speed and 4-speed automatic transmissions (e.g., BorgWarner, ZF).
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Optional
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Transmission Options:
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Availability of automatic transmission varied by market and trim level.
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Features
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Transmission Characteristics:
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Designed for comfort and smooth engagement, with manual gearboxes often featuring a column-mounted shifter on earlier models. Automatic transmissions provided a relaxed driving experience.
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Fluid Specifications
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Manual Transmission Fluid:
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Likely API GL-4, SAE 75W-80 or 80W-90 (specific viscosity and specification should be confirmed in the manual).
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Automatic Transmission Fluid:
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Likely Dexron II or equivalent (specific type is critical for proper operation).
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Maintenance
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Service Intervals
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Oil Change Interval:
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Typically every 5,000-10,000 km or 6-12 months, depending on driving conditions and oil type (refer to manual for specifics).
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Major Service:
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Key checks and replacements at higher mileage intervals (e.g., 40,000-80,000 km), including spark plugs, belts, timing chain/belt (if applicable), and comprehensive system checks.
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Fluid Specifications
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Coolant Type:
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Ethylene glycol-based antifreeze (50% mix with distilled water), often requiring specific additives for older systems. Consult manual for exact specification.
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Brake Fluid:
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DOT 3 or DOT 4 hydraulic fluid (critical for safe operation of the highly pressurized braking system).
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Hydropneumatic Fluid:
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Citroën LHM (Liquide Hydraulique Minéral) is the proprietary fluid for the hydropneumatic suspension and steering system. Incorrect fluid will cause severe damage.
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Known Issues
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Hydropneumatic System:
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Leaking spheres, worn height correctors, pressure regulator issues, hydraulic fluid degradation leading to pump or seal failures. Requires specialized knowledge.
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Electrical System:
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Corrosion in wiring looms, failing relays, issues with the DIRASS system, and dashboard electrical faults were not uncommon.
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Rust And Bodywork:
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Susceptible to corrosion, particularly in wheel arches, sills, and door bottoms. Requires regular inspection and treatment.
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