🏷️ Basic Information

Make:

Citroen

Model:

BX

Year:

1990

Chassis Code:

XB

👋 Introduction

Positioning:

A key model in Citroën's lineup during the late 1980s, known for its innovative hydropneumatic suspension and distinctive styling.

Competitors:

Competed with models like the Volkswagen Golf, Ford Escort, Peugeot 309, and Renault 19.

Unique Selling Points:

Hydropneumatic suspension providing exceptional ride comfort, avant-garde styling, practical hatchback design.

Purpose:

To provide comprehensive technical guidance for the repair, maintenance, and restoration of the Citroën BX 1990 model year.

📋 Manual Details

Primary Coverage:

Full Service Repair and Maintenance

Secondary Coverage:

Diagnostics, Troubleshooting, Rebuilding, Refurbishing, Restoration

Estimated Pages:

Extensive (typical full service manuals of this era are 500+ pages)

Type:

Full Service Repair Manual

Language:

English

Delivery Format:

PDF

Digital Requirements:

Adobe PDF Reader, WinRAR

Compatibility:

All Windows and Mac Operating Systems

📖 Manual Coverage

Powertrain:

Engine, Fuel System, Ignition System, Exhaust System, Cooling System, Lubrication System

Drivetrain:

Transmission (Manual and Automatic), Clutch, Driveshafts, Differential

Chassis:

Suspension (Hydropneumatic), Steering System, Brakes (Hydraulic and ABS if applicable), Wheels and Tires

Electrical:

Battery, Charging System, Starting System, Lighting System, Instrumentation, Wiring Diagrams, Electronic Control Units (ECUs)

Body And Interior:

Body Panels, Doors, Glass, Seats, Trim, HVAC System

Maintenance:

Scheduled Maintenance, Oil Changes, Fluid Checks and Replacements, Filter Replacements, Tune-ups

Repair:

Engine Overhaul, Transmission Repair, Brake System Service, Suspension Component Replacement, Electrical Component Diagnosis and Repair

Diagnostics:

Troubleshooting Guides, Symptom-Based Diagnostics, Diagnostic Trouble Codes (DTCs) if applicable

Technical Specifications:

Torque Specifications, Tolerances, Electrical Schematics, Component Data

Depth:

Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds, suitable for professional technicians and advanced DIYers.

📊 Manual Specifications

Format:

PDF

Searchability:

Likely text-searchable if properly OCR'd, enabling quick information retrieval.

Printability:

Full Printable - all pages can be printed.

Binding Type:

Digital (Not Applicable - Downloadable PDF)

Paper Type:

Digital (Not Applicable - Downloadable PDF)

Delivery Method:

Instant Download, No Shipping Costs

⚙️ Engine Specifications

Engine Variants 1990:

Likely included variations of the XU series naturally aspirated and potentially turbocharged diesel engines, and the TU series petrol engines. Common petrol engines were 1.4L (TU3) and 1.6L (XU5). Diesel engines included the 1.9L (XUD7 and XUD9).

Petrol Power Range:

Approximately 60-100 hp depending on specific engine (e.g., 1.4L TU3A: ~62 hp, 1.6L XU5M: ~80 hp, 1.9L GTI XU9J2: ~125 hp).

Diesel Power Range:

Approximately 60-70 hp (e.g., 1.9L XUD7: ~60 hp, 1.9L XUD9: ~67 hp).

Fuel Delivery Petrol:

Carburetor (e.g., Solex, Weber) or Electronic Fuel Injection (EFI) depending on the specific engine and trim level.

Fuel Delivery Diesel:

Indirect injection via mechanical rotary or inline injection pumps (e.g., Bosch VE).

Cooling Type:

Pressurized liquid cooling system with water pump and fan.

Oil Type Recommendation:

API SG/SH or ACEA A2/A3 specifications; viscosity grade typically 10W-40 or 15W-50 depending on climate.

🔧 Transmission

Transmission Options:

Manual transmission was standard on most models. Automatic transmission was optional on higher-spec petrol variants.

Automatic Transmission Type:

Likely a 3-speed or 4-speed automatic transmission, possibly from ZF or PSA's own development.

Clutch Type:

Dry single-plate clutch (for manual transmissions).

Manual Gearbox Fluid:

API GL-4 SAE 75W-80 or 75W-90 gear oil.

Automatic Gearbox Fluid:

Dexron II or equivalent ATF fluid.

📐 Dimensions

Body Styles:

5-door hatchback, Estate (Break).

Length:

Approx. 4180-4270 mm (hatchback)

Width:

Approx. 1660-1670 mm

Height:

Approx. 1350-1400 mm (hatchback)

Curb Weight Range:

Approx. 1050-1250 kg depending on engine and equipment.

🛡️ Safety Features

Crash Test Ratings:

Information on specific Euro NCAP ratings for 1990 models is scarce, but earlier BX models underwent tests. The BX was considered reasonably safe for its era.

Braking System:

Front: Ventilated discs. Rear: Drums or discs depending on model. Anti-lock Braking System (ABS) was available as an option on higher-spec models.

Steering Type:

Hydraulic power-assisted rack and pinion steering.

Seatbelts:

Standard front seatbelts, rear seatbelts were also common.

Body Structure:

Reinforced safety cage and crumple zones, typical for European design of the period.

💡 Technology Features

Audio System:

Basic AM/FM radio with cassette player, often with door-mounted speakers. Options for more advanced systems might have existed.

ABS Availability:

Optional on higher trims, providing enhanced braking control.

Early Electronics:

While not featuring modern connectivity, the BX did incorporate electronic fuel injection and ignition management on some variants, which were advanced for their time.

🔧 Maintenance

Oil Change Interval:

Typically every 10,000-15,000 km or 12 months, whichever comes first, depending on engine and driving conditions.

Spark Plug Replacement:

Varies by engine, but typically around 20,000-40,000 km for standard plugs.

Timing Belt Replacement:

Crucial for XU engines. Typically 60,000-80,000 km or 4-5 years. Failure can cause severe engine damage.

Hydropneumatic Fluid:

LHM (Liquide Hydraulique Minéral) - Citroën's proprietary green hydraulic fluid.

Coolant:

Ethylene glycol-based antifreeze/coolant, typically a 50/50 mix with distilled water. Check for phosphate-free or HOAT type if available for modern replacements.

Suspension Leaks:

Wear in hydraulic spheres, seals, and hoses can lead to sagging or leaks. Regular checks and topping up of LHM are essential.

Electrical Gremlins:

Common in older French cars, including corroded grounds, aging wiring harnesses, and faulty switchgear. The manual's wiring diagrams are invaluable here.

Rust Corrosion:

Areas prone to rust include wheel arches, sills, rear crossmember, and suspension pickup points, especially in regions with salt usage.

Carburetor Issues:

Carburetors can become gummed up over time, leading to rough idling or starting problems.

📚 Vehicle History

Citroen Legacy:

Citroën has a long history of innovation, particularly in suspension technology (e.g., 2CV, DS, SM) and avant-garde design.

Bx Introduction:

The Citroën BX was introduced in 1982 as a replacement for the ageing GS/GSA. It was designed by Marcello Gandini of Bertone.

Bx Facelift 1989:

A significant facelift occurred in 1989, introducing updated styling (smoother bumpers, revised grille, clear indicators), interior improvements, and new engines, making the 1990 model part of this updated series.

Production Period:

1982-1994

Production Locations:

Primarily France (Rennes-sur-Vitre), but also manufactured under license in other countries.

🏆 Awards & Recognition

Historical Acclaim:

The BX was generally well-received for its ride comfort and innovative features, though it faced stiff competition. It was not a recipient of major "Car of the Year" awards in its primary markets but was a strong seller for Citroën.