Target Audience:
BMW E31 owners, independent repair shops, and enthusiasts seeking to perform their own maintenance and repairs.
Positioning Statement:
The BMW 8 Series (E31) was positioned as a high-performance luxury grand tourer, competing with vehicles like the Mercedes-Benz SL and Porsche 928.
Value Proposition:
Provides comprehensive, manufacturer-level information essential for maintaining and repairing the complex E31 8 Series, offering significant cost savings compared to dealership service.
Ease Of Use:
Designed for all skill levels with easy-to-follow step-by-step instructions.
Breadth Of Coverage:
Extensive, covering all major mechanical, electrical, and body systems of the E31 chassis.
Engine Control Details:
Detailed diagnostics and repair for engine management systems (Motronic), including sensors, actuators, and ECUs.
Electrical Diagrams:
Comprehensive electrical wiring diagrams for all circuits, crucial for troubleshooting electrical issues.
Body And Chassis:
Covers bodywork repairs, door mechanisms, window systems, interior trim, and exterior components.
Repair And Maintenance:
Detailed step-by-step instructions for routine maintenance, troubleshooting, diagnostics, and complete repair procedures for all covered systems.
Troubleshooting Guides:
Inclusion of specific troubleshooting flowcharts and diagnostic procedures for common and complex problems.
Parts List:
Includes a complete list of parts for the 1990-1999 BMW 8 Series E31.
Diagnostic Capability:
Advanced diagnostic procedures, including wiring diagrams, component testing, and common fault diagnosis.
Rebuild Procedures:
Likely includes detailed rebuild procedures for major components such as engines and transmissions, with specifications.
Component Specifications:
Includes torque specifications, clearances, tolerances, and other critical technical data for parts replacement and assembly.
Available Engines:
Primarily covers the M60 V8 and M70 V12 engines, with potential coverage of later M62 V8 variants.
Engine Displacement M60:
4.0L (M60B40) and 3.0L (M60B30)
Engine Displacement M70:
5.0L (M70B50)
Power Output M60B40:
Approx. 295-310 hp (216-228 kW)
Torque Output M60B40:
Approx. 400-410 Nm (295-303 lb-ft)
Power Output M70:
Approx. 295 hp (217 kW)
Torque Output M70:
Approx. 470 Nm (347 lb-ft)
Injection System:
Bosch Motronic fuel injection system.
Fuel Pressure Specs:
Specifications for fuel pressure and flow rates are detailed within the manual.
Automatic Transmission:
4-speed or 5-speed automatic transmissions (e.g., ZF 4HP24, ZF 5HP30)
Manual Transmission:
6-speed manual transmission (Getrag 420G) available on some V8 models.
Transmission Control:
Electronic transmission control for adaptive shifting and performance modes.
Audio System:
Premium audio systems, often with cassette and CD players. Manual covers system diagnostics and repair.
Traction Control:
ASC+T (Automatic Stability Control and Traction) available on some models.
Electronic Dampening Control:
EDC (Electronic Damper Control) was an optional feature, allowing adjustment of suspension damping.
Multiplex Communication:
Features early forms of multiplex wiring and CAN communication, detailed in the electrical section.
Oil Change Interval:
Typically 10,000-15,000 miles (16,000-24,000 km) or 12-24 months, depending on driving conditions. Manual will provide specific BMW recommendations.
Brake Fluid Flush:
Recommended every 2 years.
Engine Oil Type M60:
Synthetic engine oil, e.g., BMW High Performance SAE 5W-30 or 0W-40. Specific BMW LL-01 or LL-04 may apply depending on exact production date and region. (Manual to confirm exact BMW approval).
Coolant Type:
BMW Blue/Green Antifreeze/Coolant (G48) or equivalent.
Brake Fluid Type:
DOT 4 Low Viscosity (LV) or DOT 4+.
Transmission Fluid Auto:
Specific ATF fluid (e.g., Dexron III for early models, LT-2 or LT-3 for later ZF transmissions). Manual will specify exact fluid type and capacity.
Transmission Fluid Manual:
GL-4 or GL-5 gear oil with appropriate viscosity. Manual will specify exact type.
Power Steering Fluid:
BMW approved power steering fluid. Manual will specify type and capacity.
Differential Fluid:
Hypoid gear oil meeting specific API GL-5 classifications. Manual will specify viscosity and capacity.
Common M60 Issues:
Nikasill cylinder bore wear (especially on early M60B30/B40), oil separator system issues, VANOS system problems, coolant expansion tank cracks, and EML (Engine Management Light) issues.
Common M70 Issues:
Dual DME complexity, throttle body actuator issues, oil leaks, and ignition system complexity.
General E31 Issues:
Power window regulators, door seal degradation, headliner sag, electronic component failures (ABS, EDC), and potential cooling system component failures.
Bmw Philosophy:
Represents BMW's foray into the luxury grand tourer segment, emphasizing performance, comfort, and advanced technology.
Design Era:
Defined by its sleek, aerodynamic 'shark nose' styling and pillarless coupe silhouette.
Production Period:
1989-1999
Manufacturing Location:
Germany
