Target Audience:
Technicians, mechanics, and car owners seeking detailed repair and learning information.
Key Benefit 1:
Comprehensive and accurate factory technical data.
Key Benefit 2:
Instant access and download, saving time compared to physical manuals.
Key Benefit 3:
Cost-effective solution for repair information.
Advantage Over Alternatives:
Provides a complete, authoritative factory resource accessible digitally, avoiding the need to source multiple physical manuals or incomplete online information.
Coverage Areas:
General Maintenance, Troubleshooting, Engine Service/Repair, Transmission Service/Repair, Brake System, Wiring Diagram, Electrical System, Suspension, Periodic Lubrication, Steering, Cooling System, Fuel Injection, Fuel System, Emission System, Heater/Air Conditioning, Engine Control System, Chassis/Body, Restraint System, Interior, Differential/Drive, Axle
Manual Type:
Factory Service Repair Manual
Delivery Method:
Instant Download
Software Requirements:
Adobe PDF Reader, WinZip (for larger files)
Operating Systems:
All Versions of Windows & Mac
Engine Service:
Detailed procedures for engine overhaul, component replacement, and diagnostics.
Transmission Service:
Information on automatic and manual transmission servicing, repair, and adjustments.
Brake System:
Comprehensive coverage of hydraulic and mechanical braking components, including ABS if applicable.
Electrical System:
Detailed wiring diagrams, component testing, and troubleshooting for all electrical circuits.
Suspension Steering:
Repair and maintenance procedures for suspension components, steering gear, and alignment.
Fuel System:
Diagnosis and repair of fuel injection systems, fuel pumps, lines, and tanks.
Cooling Heating Ac:
Service and repair information for the cooling system, radiator, water pump, and climate control.
Chassis Body:
Information related to chassis structural repairs, body panel replacement, and exterior trim.
Restraint System:
Details on seat belts and potentially early airbag systems if equipped.
General Maintenance:
Routine service tasks, fluid checks, filter replacements, and lubrication.
Troubleshooting:
Diagnostic procedures and flowcharts for common vehicle issues.
Engine Repair:
Component-level repair, rebuilding, and replacement of engine parts.
Transmission Repair:
Detailed steps for transmission overhaul and component replacement.
Brake Repair:
Brake pad/shoe replacement, caliper/wheel cylinder servicing, and brake fluid bleeding.
Electrical Diagnostics:
Testing of sensors, actuators, ECUs, and wiring harness integrity.
Suspension Repair:
Replacement of shocks, struts, control arms, bushings, and tie rod ends.
Steering Repair:
Service for steering racks, power steering pumps, and linkages.
Fuel Injection Service:
Injector testing, cleaning, and calibration procedures.
Cooling System Service:
Radiator flush, thermostat replacement, and leak detection.
Chassis Body Repair:
Panel alignment, rust repair, and exterior trim installation.
Depth:
Comprehensive factory-level repair and diagnostic information, suitable for professional technicians and advanced DIY enthusiasts.
Engine Options:
The E23 chassis was primarily equipped with the M30 inline-six engine. Specific displacements and variants include 3.2L (M30B32) and 3.4L (M30B34) for models like the 733i, 735i, and L7.
Performance Characteristics
Horsepower Range:
Approximately 180-210 hp, depending on specific engine variant and market emissions standards.
Torque Range:
Approximately 220-245 lb-ft, depending on specific engine variant.
Fuel Delivery:
Bosch L-Jetronic or Motronic fuel injection systems.
Ignition System:
Electronic ignition system with distributor.
Engine Control Unit:
Early electronic engine control units (ECU) managing fuel and ignition.
Type:
Likely a 4-speed automatic transmission (e.g., ZF 4HP22) was standard on many models.
Type:
A 5-speed manual transmission (e.g., Getrag 265) was often available as an option on select models and markets.
Transmission Fluid Type:
Specific Automatic Transmission Fluid (ATF) type recommended by BMW; consult manual for exact specification (e.g., Dexron II).
Manual Transmission Fluid Type:
Specific gear oil for manual transmissions; consult manual for exact specification.
Wheelbase:
Approximately 111.5 inches (2832 mm).
Overall Length:
Approximately 199.1 inches (5057 mm).
Overall Width:
Approximately 70.5 inches (1791 mm).
Overall Height:
Approximately 54.7 inches (1390 mm).
Curb Weight:
Approximately 3,700 - 4,000 lbs (1678 - 1814 kg), depending on model and equipment.
Seatbelts:
Three-point seatbelts for front occupants, likely lap belts for rear in early models.
Headrests:
Adjustable front and rear headrests.
Crumple Zones:
Designed with front and rear crumple zones for energy absorption.
Braking System:
Four-wheel disc brakes, often with ventilated front discs. ABS (Anti-lock Braking System) was an option in later years of this generation.
Steering System:
Power-assisted recirculating ball steering, later models may have adopted rack-and-pinion.
Audio System:
Factory AM/FM stereo with cassette player, optional premium sound systems.
HVAC System:
Manual or automatic climate control systems, with air conditioning and heating.
Cruise Control:
Standard cruise control on most models.
ABS:
Anti-lock Braking System (ABS) available as an option on later E23 models.
Oil Change Interval:
Typically every 5,000-7,500 miles (8,000-12,000 km) or annually, depending on driving conditions and oil used.
Transmission Fluid Change:
Automatic transmission fluid and filter often recommended around 30,000-60,000 miles (48,000-96,000 km).
Spark Plug Replacement:
Typically every 30,000-60,000 miles (48,000-96,000 km), depending on spark plug type (copper vs. platinum).
Engine Oil Type:
Multi-viscosity oil, typically 20W-50 or 10W-40, depending on climate and manufacturer recommendations. Consult manual for specific API service classification.
Coolant Type:
Ethylene glycol-based coolant with corrosion inhibitors. Typically a 50/50 mix of coolant and distilled water.
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid.
Common Issue 1:
Cooling system leaks (e.g., radiator, hoses, water pump).
Common Issue 2:
Fuel injection system issues (e.g., worn injectors, fuel pressure regulator).
Common Issue 3:
Electrical component failures (e.g., alternator, starter, SRS module if applicable).
Common Issue 4:
Suspension wear (bushings, ball joints).
Common Issue 5:
Corrosion on body panels and structural components.
Bmw Philosophy:
BMW's commitment to performance, luxury, and engineering excellence, embodied by the 'Ultimate Driving Machine' tagline.
E23 Introduction:
The E23 generation replaced the E12 5 Series as BMW's flagship sedan, debuting in 1977 and running until 1986.
E23 Facelift:
The E23 received a significant facelift in 1983 (model year 1984), including updated aerodynamics, interior refinements, and revised engine management systems.
Production Period:
1977-1986
Manufacturing Location:
Dingolfing, Germany.
