Target Audience:
Technicians, mechanics, DIY enthusiasts, owners seeking in-depth repair knowledge
Value Proposition:
Comprehensive electronic troubleshooting information at a low price with instant access, supplementing factory data
Unique Selling Points:
Focus on electronic troubleshooting, factory-level data, immediate availability, low cost
Content Origin:
Stated as official full COMPLETE factory service repair manual, implying original manufacturer data.
Primary Focus:
Electronic Troubleshooting
Secondary Coverage:
General Maintenance, Engine, Transmission, Brakes, Electrical System, Suspension, Steering, Cooling System, Fuel System, Emission System, HVAC, Chassis/Body, Restraint System, Interior, Drivetrain
Estimated Pages:
Hundreds or Thousands (Printable)
Type:
Factory Service Repair Manual
Delivery Method:
Instant Download
File Compression Requirement:
WinZip or similar unzipping software may be required for larger manual files.
Software Requirements:
Adobe PDF Reader, WinZip (for larger files)
Engine Management:
Engine Control System, Fuel Injection, Fuel System, Emission System
Drivetrain:
Transmission Service/Repair, Differential/Drive, Axle
Chassis And Suspension:
Brake System, Suspension, Steering, Cooling System, Chassis/Body
Electrical And Electronics:
Electrical System, Wiring Diagram, Electronic Troubleshooting
Comfort And Convenience:
Heater/Air Conditioner, Interior
Safety Features:
Restraint System
Vehicle Dynamics:
Suspension, Steering, Brake System
Diagnostic Procedures:
Troubleshooting steps for electrical and electronic faults, circuit analysis, component testing
Mechanical Repair:
Engine repair and overhaul, transmission service, brake system maintenance and repair, suspension and steering component replacement
Electrical Repair:
Wiring harness repair, component diagnosis and replacement, fuse and relay identification, circuit repair
Maintenance:
General Maintenance, Periodic Lubrication, fluid changes, filter replacements, inspection routines
Wiring Diagrams:
Comprehensive and detailed wiring diagrams for all electrical systems, crucial for troubleshooting.
Engine Diagnostics:
Includes procedures for diagnosing engine performance issues, fuel delivery problems, and emission control system faults.
Depth Of Information:
Detailed technical data, circuit diagrams, equipment specifications, component-level troubleshooting
Troubleshooting Approach:
Systematic fault finding, symptom-based diagnosis, component testing procedures, and electrical schematic interpretation.
Print Quality:
GREAT QUALITY (Printable)
Searchability:
Likely searchable if digitally native PDF, may depend on OCR quality if scanned
Binding:
Not Applicable (Digital Download)
Paper Quality:
Not Applicable (Digital Download)
Engine Type:
Inline 6-cylinder, naturally aspirated
Engine Displacement:
3.4 Liters (approx. 3430 cc)
Horsepower:
Approx. 218 hp @ 5700 rpm (DIN)
Torque:
Approx. 305 Nm (225 lb-ft) @ 4000 rpm (DIN)
Fuel Delivery:
Bosch Motronic L-Jetronic Fuel Injection
Valvetrain:
Overhead Camshaft (OHC), 2 valves per cylinder
Engine Management System:
Bosch Motronic engine management system controlling fuel injection and ignition timing.
Wheelbase:
Approx. 2,816 mm (110.9 inches)
Length:
Approx. 4,900 mm (192.9 inches)
Width:
Approx. 1,798 mm (70.8 inches)
Height:
Approx. 1,420 mm (55.9 inches)
Front Track:
Approx. 1,474 mm (58.0 inches)
Rear Track:
Approx. 1,490 mm (58.7 inches)
Curb Weight:
Approx. 1,600-1,700 kg (3,527-3,748 lbs) depending on equipment
Gross Vehicle Weight Rating:
Not explicitly stated, but inferred from curb weight and payload capacity.
Audio System:
Factory installed AM/FM stereo with cassette player, often with premium speaker options.
Cruise Control:
Standard on most 735i models.
Onboard Computer:
Optional trip computer offering basic vehicle status information.
Climate Control:
Automatic climate control with air conditioning and heating.
Power Features:
Power windows, power locks, power mirrors, power seats (often with memory function for driver's seat).
Oil Change Interval:
Typically every 10,000 - 15,000 km (6,000 - 9,000 miles) or annually, consult specific manual for precise interval
Transmission Fluid Change:
Recommended every 60,000 - 100,000 km (37,000 - 60,000 miles), depending on driving conditions and fluid type.
Spark Plug Replacement:
Typically every 30,000 - 40,000 km (18,000 - 25,000 miles) for standard spark plugs.
Engine Oil Type:
API SG or higher, SAE 15W-40 or 10W-40 recommended (check manual for exact viscosity based on climate)
Coolant Type:
Ethylene glycol based antifreeze with corrosion inhibitors (BMW recommends specific coolant for their systems)
Power Steering Fluid:
BMW recommends specific power steering fluid, often Dexron III or a compatible synthetic ATF.
Common Failures:
Electronic control unit (ECU) issues, ignition system components (coil, distributor), fuel pump relays, window regulators, HVAC blower motor, coolant leaks from metal pipe connections.
Electrical Gremlins:
E23s are known for complex electrical systems that can develop intermittent faults over time, making an electronic troubleshooting manual invaluable.
Interior Wear:
Common wear on leather seating, dashboard materials, and door panel inserts due to age and use.
Brand Legacy:
BMW is renowned for its 'Ultimate Driving Machine' philosophy, emphasizing performance, luxury, and engineering excellence.
E23 Generation:
The E23 was BMW's first generation of the 7 Series, introduced in 1977 and produced until 1986. It represented BMW's entry into the full-size luxury sedan market, competing with established German and American marques. The 1985 model year represents the later part of the E23's lifecycle, often featuring updated styling and technology.
Production Period:
1977-1986
