Positioning:
The Citroën CX was a flagship model known for its advanced technology, distinctive styling, and superior ride comfort, targeting the premium executive car segment.
Competitors:
Competed against vehicles like the BMW 5 Series, Mercedes-Benz E-Class, and Peugeot 604.
Aerodynamics:
Exceptional aerodynamic design for its era, contributing to fuel efficiency and quietness.
Hydropneumatic Suspension:
Renowned for its self-leveling and highly compliant hydropneumatic suspension, providing an unparalleled 'magic carpet' ride.
Diravi Steering:
DIRAVI (Direction by Cable) speed-sensitive power steering, offering light steering at low speeds and increased resistance at higher speeds for stability.
Interior Design:
Distinctive and ergonomic 'satellite' controls and a futuristic dashboard layout.
Engine Service:
Comprehensive engine repair, overhaul, and tuning procedures
Transmission Service:
Detailed procedures for manual and automatic transmission maintenance and repair
Suspension Hydropneumatic:
In-depth coverage of Citroën's unique hydropneumatic suspension system (front and rear), including sphere replacement, fluid servicing, and pressure regulation
Steering System:
Hydraulic power steering system diagnosis and repair
Braking System:
Disc brake servicing, hydraulic circuits, and the DIRAVI (Direction by Cable) system for self-centering steering
Electrical System:
Complete wiring diagrams, component testing, ignition system, lighting, and auxiliary circuits
Fuel System:
Carburetor (Weber, Solex) or Bosch L-Jetronic injection system servicing and adjustment
Cooling System:
Radiator, fan, thermostat, and coolant circulation troubleshooting
Exhaust System:
Component replacement and inspection
Body And Chassis:
Panel replacement, door mechanisms, interior trim, and structural components
HVAC System:
Heating, ventilation, and air conditioning system service
Maintenance:
Scheduled maintenance, oil changes, filter replacements, lubrication
Troubleshooting:
Diagnostic charts and systematic troubleshooting guides for common problems
Repair:
Step-by-step repair instructions for all major vehicle components
Disassembly And Assembly:
Detailed instructions for removing and reinstalling parts and sub-assemblies
Cleaning And Reinstallation:
Guidance on cleaning components before reassembly
Diagnostic Capability:
Advanced diagnostic procedures, including electrical testing and hydraulic system pressure checks
Rebuild Procedures:
Comprehensive overhaul instructions for engines and transmissions
Specifications And Tolerances:
Critical torque values, clearances, and measurement specifications for precise repairs
Diagrams And Illustrations:
Includes diagrams, schematics, and potentially photographs for clarity
Engine Options 1985:
Likely the 2.0L (M20/M20-60) and 2.5L (2.5i, potentially fuel injected) gasoline engines. Diesel options (e.g., 2.5L Diesel) were also available.
Engine Displacement 2.0L:
Approximately 1985 cc
Engine Displacement 2.5L:
Approximately 2498 cc
Typical Horsepower 2.0L:
Around 90-105 hp
Typical Horsepower 2.5L:
Around 110-130 hp (carbureted), potentially more for injected versions
Fuel Delivery Methods:
Carburetor (Weber 34DLA or similar) or Bosch L-Jetronic fuel injection for higher-spec models.
Engine Code Example:
e.g., Douvrin ZDJ/ZK
Transmission Options 1985:
4-speed or 5-speed manual transmissions were common. A 3-speed ZF automatic transmission was also an option.
Automatic Transmission Type:
ZF 3HP22 (3-speed automatic)
Hydropneumatic Transmission Link:
Some aspects of transmission operation can be influenced by the hydropneumatic system's hydraulic pressure.
Length:
Approx. 4,640 mm (182.7 in)
Width:
Approx. 1,750 mm (68.9 in)
Height:
Approx. 1,350 mm (53.1 in)
Wheelbase:
Approx. 2,900 mm (114.2 in)
Curb Weight:
Varies by engine and equipment, typically around 1,300 - 1,500 kg (2,866 - 3,307 lb)
Crash Test Era:
Era-specific safety standards; no modern standardized ratings available.
Diravi Steering Safety:
DIRAVI steering enhances stability at speed, reducing the risk of over-correction.
Hydropneumatic Self Leveling:
Maintains consistent ride height regardless of load, improving handling predictability and headlight aim.
Seatbelts:
Standard front seatbelts, often with inertia reels.
Body Structure:
Designed with a robust unibody structure for its time.
Radio System:
Period-appropriate AM/FM radio, often with cassette player.
Dashboard Controls:
Unique 'satellite' controls for wipers, lights, horn, and indicators located on a stalk on either side of the steering column.
Speed Sensitive Steering:
DIRAVI system provides speed-sensitive assistance.
Connectivity Features:
Basic connectivity for the era; no modern digital connectivity features.
Oil Change Interval:
Typically every 5,000-7,500 km (3,000-5,000 miles) or annually, depending on driving conditions.
Hydropneumatic Fluid Service:
LHM (Liquide Hydraulique Minéral) fluid change recommended every 40,000-60,000 km (25,000-37,000 miles) or as per manual, with filter replacement.
Engine Oil Specification:
Typically SAE 10W-40 or 15W-40 API SG/SH rated oil for gasoline engines, check manual for specific viscosity and API rating.
Hydropneumatic Fluid:
Citroën LHM Plus (Green fluid). Never use mineral oil or other hydraulic fluids.
Coolant Specification:
Ethylene glycol-based antifreeze, typically a 50/50 mix with distilled water.
Brake Fluid Type:
DOT 4 for the main braking system, distinct from LHM.
Hydropneumatic Leaks:
Common issues include leaks from hoses, seals, and the hydraulic spheres losing pressure over time.
Electrical Gremlins:
As with many older French cars, the electrical system can be complex and prone to minor issues if not properly maintained.
Exhaust Hangers Corrosion:
Corrosion can affect exhaust system mountings.
Rust Ingress:
Bodywork, particularly sills, wheel arches, and boot floor, can be susceptible to rust.
Cooling Fan Failures:
The electric cooling fan can sometimes fail, leading to overheating in traffic.
Citroen Innovation:
Citroën has a long history of automotive innovation, from the Traction Avant to the 2CV and DS.
Cx Introduction:
The CX was introduced in 1974 as the successor to the iconic DS, sharing its avant-garde design and hydropneumatic suspension.
Facelifts:
The CX received facelifts, with the 1985 model year belonging to the Series 2 (post-1982) which featured updated styling, improved aerodynamics, and interior refinements.
Production Years:
1974-1997
Manufacturing Plants:
Primarily manufactured in France (Rennes-la-Janais) and also in various international locations.
European Car Of The Year Nominee:
While not a winner, the CX was a strong contender in the automotive press and was highly regarded for its innovation.
Design Awards:
Frequently cited for its futuristic and influential design, winning several design accolades.
Ride Comfort Ratings:
Consistently rated as having one of the best ride qualities of any production car, even by modern standards.
Technical Manual Quality:
This service manual is prepared to the standards of factory technicians, ensuring accuracy and comprehensiveness for repairs.
