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Introduction
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Market Position
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Positioning:
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The Citroen BX was a family hatchback positioned to offer innovative technology and comfort, often at a competitive price point against rivals like the Volkswagen Golf, Ford Escort, and Peugeot 305.
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Competitive Analysis
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Competitors:
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Key competitors included vehicles from Ford, Volkswagen, Peugeot, Opel, and Renault. The BX's unique selling proposition was its hydropneumatic suspension and distinctive styling.
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Key Features
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Features:
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Distinctive wedge-shaped aerodynamic design by Marcello Gandini, advanced hydropneumatic suspension providing exceptional ride comfort, front-wheel drive, hatchback practicality.
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Manual Coverage
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Systems Covered
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Engine:
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Complete engine overhaul, tuning, diagnosis, fuel injection, carburetor systems, cooling system, lubrication system.
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Transmission:
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Manual and automatic transmission repair, clutch, gearbox, torque converter, driveline components.
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Suspension:
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Citroen's unique hydropneumatic suspension system diagnosis, repair, fluid servicing, spheres, accumulators, pumps, height correctors.
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Brakes:
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Hydraulic brake systems, discs, drums, ABS (if equipped), brake lines, master cylinder, power assistance.
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Electrical:
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Wiring diagrams, component testing, ignition system, lighting, instrumentation, starting and charging systems, fuse box layouts.
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Bodywork:
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Panel repair, door mechanisms, glass, seals, interior trim, body alignment.
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Procedures Included
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Maintenance:
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Scheduled maintenance, oil changes, filter replacements, fluid checks and changes, tune-ups.
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Troubleshooting:
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Diagnostic flowcharts, common problem identification and resolution.
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Repair:
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Step-by-step repair procedures for all major mechanical and electrical components.
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Diagnostics:
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Component testing, fault finding using specifications and procedures.
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Technical Depth
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Depth:
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Comprehensive, from basic maintenance to complete engine and transmission rebuilds, suitable for professional technicians and advanced DIY enthusiasts.
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Maintenance
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Service Intervals
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Oil Change Interval:
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Typically every 10,000 km (6,000 miles) or 12 months for petrol engines, subject to operating conditions. Diesel intervals might be longer.
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Timing Belt Interval:
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Refer to manual for specific engine. Typically around 60,000-80,000 km (36,000-50,000 miles) for petrol engines.
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Fluid Specifications
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Hydropneumatic Fluid:
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Citroen LHM (Fluide Hydraulique Minéral) is critical. Capacity approx. 4-5 liters. Incorrect fluid will cause system damage.
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Engine Oil:
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API SG or SF, SAE 10W-40 or 15W-50 depending on ambient temperature and engine type. Consult manual for exact specifications. Capacity approx. 4-4.5 liters.
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Coolant:
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Ethylene Glycol based antifreeze. Mixture of 50% antifreeze and 50% distilled water. Capacity approx. 7-8 liters.
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Brake Fluid:
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DOT 3 or DOT 4, depending on system design. Consult manual.
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Transmission Fluid Manual:
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API GL-4, SAE 75W-90 or 80W-90. Capacity approx. 2.5-3 liters.
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Transmission Fluid Auto:
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Dexron III or equivalent. Consult manual for exact type. Capacity approx. 3-4 liters.
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Known Issues
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Suspension Spheres:
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Spheres require periodic re-gassing or replacement as they age, affecting ride comfort and height control.
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Rust Corrosion:
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Prone to rust in common areas like wheel arches, sills, and suspension components, particularly in regions with road salt.
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Hydropneumatic Leaks:
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Hydraulic pipes and seals can degrade over time, leading to leaks and loss of hydraulic pressure.
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Electrical Gremlins:
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Older wiring looms and connections can be a source of intermittent electrical faults.
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Exhaust Manifold Cracks:
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Some petrol engines were known to develop cracks in the exhaust manifold.
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Vehicle History
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Brand Heritage
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Heritage:
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Citroen has a long history of automotive innovation, particularly with its advanced suspension systems (e.g., 2CV, DS, SM) and aerodynamic designs.
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Model Evolution
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Bx Evolution:
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The BX was launched in 1982 as a replacement for the ageing GS/GSA. The 1985 model represents an evolution with potential updates to engines, trim, and options. It was produced in various forms, including saloon and estate (Break) versions, and saw significant revisions in 1988 (Series II).
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Production
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Production Locations:
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Primarily produced in France (Rennes-La-Janais) and also in Vigo, Spain, and various other international locations through CKD assembly.
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