🏷️ Basic Information

Make:

Citroën

Model:

CX

Years Covered:

1988-1991

Chassis Code:

CX (Post-1985 facelift models)

👋 Introduction

Market Position:

The Citroën CX was a large, front-wheel-drive executive car produced from 1974 to 1991. It was renowned for its aerodynamic design, advanced hydropneumatic suspension, and unique styling, establishing Citroën's reputation for innovation. This manual serves owners and mechanics maintaining these iconic vehicles in their final production years.

Competitive Analysis:

In its market segment, the CX competed with luxury sedans from German and British manufacturers. Its technological sophistication, particularly the hydropneumatic suspension providing unparalleled ride comfort, set it apart. Maintaining such a technologically advanced vehicle requires detailed, manufacturer-approved information, which this manual provides.

Key Features:

Comprehensive coverage for 1988-1991 models, detailed repair procedures, troubleshooting, wiring diagrams, and maintenance schedules. Instant PDF download for immediate access, ideal for both professional workshops and dedicated enthusiasts.

📋 Manual Details

Coverage Areas:

All mechanical and electrical systems, bodywork, and maintenance for Citroën CX 1988-1991 models.

Page Count:

Hundreds of pages (typical for a full workshop manual, exact count not specified in product info)

Manual Type:

Workshop Service Manual / Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Systems Covered:

Engine (Gasoline, Diesel), Hydropneumatic Suspension System, Brakes (Hydraulic, Front Discs, Rear Drums/Discs), Steering (Hydraulic Power Steering), Transmission (Manual, Automatic), Electrical System (Wiring Diagrams, Ignition, Lighting, Accessories), Fuel System, Cooling System, Exhaust System, Body and Chassis, Interior, HVAC (Heating, Ventilation, Air Conditioning - if applicable).

Procedures Included:

Routine Maintenance, Periodic Service Schedules, Troubleshooting Guides, Step-by-Step Repair Instructions, Overhaul Procedures, Component Replacements, Diagnostic Information, Electrical Circuit Diagrams, Adjustments, Specifications.

Technical Depth:

Comprehensive, suitable for professional technicians and advanced DIY mechanics. Covers everything from basic fluid checks to complete engine and transmission rebuilds.

Diagnostics:

The manual will contain specific diagnostic flowcharts for common problems, including engine performance issues, electrical faults, suspension behavior, and transmission faults. It details how to interpret symptoms and pinpoint the root cause.

Wiring Diagrams:

Comprehensive electrical wiring diagrams are a key component, illustrating circuits for lighting, ignition, fuel injection/carburetion, instruments, accessories, and the hydropneumatic system control.

Bodywork Repair:

Includes procedures for body panel alignment, door and window regulator repair, trim replacement, and basic rust repair techniques where applicable. Corrosion protection measures are also discussed.

📊 Manual Specifications

File Format:

PDF

Print Quality:

Full Printable

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Searchability:

Likely searchable text (typical for well-produced PDF manuals)

Zoom Functionality:

YES

Requirements:

Adobe PDF Reader, WinRAR

Compatibility:

All Versions of Windows & Mac

⚙️ Engine Specifications

Primary Engine:

Likely includes variations of the Douvrin (PSA) range of inline-four engines. Common variants during this period would include 2.0L (XM7 and ZDJ) and 2.2L (ZDJ) gasoline engines. Diesel variants like the 2.5L (XD2S, XD3T) were also available.

Performance:

Horsepower and torque figures varied significantly by engine. For example, a 2.0L gasoline engine might produce around 106 hp, while a turbo-diesel could offer more torque for cruising. Specific figures would be detailed within the manual.

Fuel System:

Carbureted (Weber, Solex) or Bosch L-Jetronic fuel injection systems for gasoline engines. Diesel engines utilize injection pumps (e.g., Bosch). The manual will detail fuel pump operation, injector testing, and carburetor/injection system adjustments.

Engine Code Examples:

Examples include XM7 (2.0L gasoline), ZDJ (2.0L/2.2L gasoline), XD2S (2.5L Diesel), XD3T (2.5L Turbo Diesel).

Cooling System:

Pressurized coolant system with a radiator, fan (engine-driven or electric), thermostat, water pump, and expansion tank. The manual details system flushing, leak testing, and component replacement.

Ignition System:

Electronic ignition system (e.g., Bosch, Marelli) with distributor, ignition coil, and spark plugs. The manual covers spark plug gap settings, timing adjustments, and component testing.

Exhaust System:

Steel exhaust system with catalytic converter (on later gasoline models) for emissions control. Manual includes diagnosis of leaks, muffler replacement, and catalytic converter inspection.

🔧 Transmission

Standard:

Likely the Citroën C-3 manual gearbox, a 5-speed transaxle.

Optional:

Citroën's own hydraulic automatic transmission (often referred to as a 3-speed automatic).

Features:

Both transmissions are integrated with the engine into a transaxle layout. The manual details clutch operation, gear shift linkage adjustments, and automatic transmission fluid changes and diagnostics. Specific gear ratios and fluid capacities are included.

Gear Ratios:

Specific gear ratios for both manual and automatic transmissions are provided, crucial for understanding performance characteristics and for any gearbox repairs or replacements.

📐 Dimensions

Exterior:

Length: Approx. 4,610-4,830 mm (depending on variant), Width: Approx. 1,770 mm, Height: Approx. 1,360-1,370 mm. Wheelbase: Approx. 2,900 mm.

Interior:

Spacious cabin benefiting from the long wheelbase and front-wheel-drive layout. Ergonomic design with signature directional indicator stalks and a 'satellite' control pod for most functions. Detailed interior trim and component removal instructions are covered.

Cargo:

Generous boot space, typical for a large sedan of the era. Specific dimensions and load capacities are likely within the manual.

Weights:

Curb weight typically ranged from 1,300 kg to 1,500 kg, depending on engine and equipment. Gross Vehicle Weight (GVW) information is crucial for safe operation and will be detailed.

Wheel Base:

2900 mm (114.2 inches)

Track Width:

Front: Approx. 1,500 mm, Rear: Approx. 1,370 mm (values may vary slightly by model variant).

🛡️ Safety Features

Ratings:

While formal crash test ratings as we know them today were less standardized in the 1980s, the CX's design prioritized occupant safety with a rigid chassis and controlled crumple zones. The manual covers the functioning of safety systems like seat belts and the braking system.

Active Features:

Four-wheel disc brakes (on many models), power steering, and the advanced hydropneumatic suspension system that automatically maintains ride height and adjusts damping for stable handling.

Passive Features:

Reinforced safety cage construction, energy-absorbing steering column, and padded interior surfaces. Seat belt anchorage points and adjustment procedures are critical maintenance aspects covered.

Brake System:

Hydraulic, servo-assisted. Front brakes are typically internally ventilated discs. Rear brakes are either discs or drums depending on the specific model and year. The hydropneumatic system integrates brake pressure regulation.

💡 Technology Features

Infotainment:

Basic radio and cassette player systems were common. Features like electric windows, central locking, and air conditioning (optional) were available. The manual details the operation and repair of these electronic accessories.

Driver Assistance:

Primary driver assistance was the sophisticated hydropneumatic suspension, which actively managed ride height and damping. Power steering was standard on later models. No advanced electronic driver aids like ABS or traction control were widely available on this generation CX.

Connectivity:

Limited to the vehicle's internal electrical systems. No external connectivity features were present.

Lighting System:

Halogen headlights, including the characteristic Cibie or Marchal units. Manual details bulb replacement, headlight aiming, and wiring for exterior and interior lighting.

🔧 Maintenance

Service Intervals:

Typical intervals include oil changes every 5,000-10,000 km, filter replacements at similar intervals, coolant changes every 2-3 years, and brake fluid changes every 2 years. The manual will provide detailed charts specific to engine and driving conditions.

Fluid Specifications:

Key fluids include Citroën LHS 2 (or compatible hydraulic fluid for the suspension and brakes), engine oil (e.g., 10W-40, 15W-50 depending on climate and engine), brake fluid (DOT 3/4), coolant (Ethylene Glycol based), transmission fluid (e.g., Dexron II for automatics), and power steering fluid (LHS 2 or compatible).

Known Issues:

Common issues can include the hydropneumatic suspension (leaks, pressure loss, worn spheres), electrical gremlins (especially older wiring harnesses), rust (particularly in wheel arches and sills), and timing belt wear (on gasoline engines). The manual provides diagnostics and repair procedures for these.

Filter Part Numbers:

While specific part numbers are not provided, the manual will reference the correct oil filter, fuel filter, and air filter for each engine variant used in the 1988-1991 models. These would typically be Mann, Purflux, or Fram equivalents.

Suspension Maintenance:

Detailed procedures for checking and refilling hydraulic fluid, replacing suspension spheres, adjusting ride height, and servicing the hydraulic pump and accumulators. This is a critical area for CX ownership and the manual provides in-depth guidance.

Tire Specifications:

Typical tire sizes for the CX were around 185 R15 or 195/70 VR 15. The manual will specify recommended tire pressures and types for optimal performance and safety.

📚 Vehicle History

Brand Heritage:

Citroën has a long history of innovation and avant-garde automotive engineering, dating back to André Citroën's pioneering mass production techniques and innovative designs like the Traction Avant and 2CV. The CX continued this legacy.

Model Evolution:

The CX, launched in 1974, replaced the legendary DS. It inherited the hydropneumatic suspension and front-wheel-drive layout, but featured a significantly more modern, aerodynamic design penned by Robert Opron. The 1985 facelift introduced significant updates, including power steering as standard on most models, revised interiors, and updated engines, which are the focus of this manual.

Production:

Produced in France, Portugal, and Slovenia. Production for the CX ceased in 1991, marking the end of an era for Citroën's hydropneumatic saloons.

Interior Design Evolution:

Post-1985 facelift models featured a significantly updated dashboard and interior ergonomics, including the introduction of the single-spoke steering wheel with integrated controls. The manual details these revised components.

🏆 Awards & Recognition

Recognitions:

While specific awards for the 1988-1991 models are not widely documented, the CX as a model was lauded for its innovation, particularly its groundbreaking suspension system, which influenced automotive design for decades. It was often recognized for its comfort and unique driving experience.

Ratings:

Owner satisfaction and critical reviews often highlighted the CX's exceptional ride quality and distinctive styling. However, maintenance complexity and potential reliability concerns for those unfamiliar with the hydropneumatic system were also noted.