Segment:
Executive Mid-size Sedan
Brand Perception:
Known for performance, luxury, and build quality.
Key Competitors:
Mercedes-Benz W124 E-Class, Audi V8 Quattro, Jaguar XJ6.
Driving Dynamics:
Renowned for balanced handling and driver engagement.
Powertrain:
Smooth and powerful inline-six engine.
Build Quality:
Solid construction and durable materials.
Design:
Timeless and elegant styling.
Engine Management:
Detailed diagnostics, component testing, sensor readings, ECU functions.
Emission Control:
Catalytic converter operation, O2 sensor function, EVAP system diagnostics.
Drivetrain:
Manual and automatic transmission overhaul, differential service, driveshaft balancing.
Braking System:
ABS diagnostics, brake caliper overhaul, fluid flush procedures, rotor and pad replacement.
Power Steering:
Pump and rack overhaul, hydraulic system bleeding, fluid type specifications.
Climate Control:
AC system recharge, compressor replacement, heater core service, blower motor diagnostics.
Lighting And Accessories:
Headlight aiming, interior lighting repair, power window and lock diagnostics.
Body And Chassis:
Panel replacement, rust repair techniques, door and trim removal/installation.
Maintenance Procedures:
Oil changes, filter replacements, spark plug service, coolant flushes, belt adjustments.
Troubleshooting Guides:
Systematic diagnosis for common and uncommon drivability issues, electrical faults, and mechanical failures.
Rebuilding Procedures:
Complete engine rebuilds, transmission overhauls, differential rebuilds.
Component Replacement:
Step-by-step instructions for replacing starters, alternators, water pumps, fuel injectors, etc.
Wiring Diagrams:
Comprehensive electrical schematics for all major systems.
Torque Specifications:
Precise torque values for all critical fasteners.
Diagnostic Trouble Codes:
Listing and interpretation of diagnostic trouble codes (DTCs).
Depth:
Comprehensive (from basic maintenance to complete engine/transmission rebuilds).
Quality:
High-resolution, searchable PDF for easy navigation and printing.
Suitability:
Printable pages for workshop use.
Digital Format Feature:
Hyperlinked for quick access to sections.
Digital Format Feature:
Allows zooming for detailed inspection of diagrams and schematics.
Type:
Naturally Aspirated Inline-6 Cylinder
Displacement:
3.4 Liters (3430 cc)
Bore X Stroke:
92.0 mm x 86.0 mm
Valvetrain:
SOHC, 2 Valves per Cylinder
Horsepower Est:
208 hp @ 5700 rpm
Torque Est:
220 lb-ft @ 4000 rpm
Injection Type:
Bosch Motronic Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline (Premium)
Coolant Type:
BMW Blue Antifreeze/Coolant or equivalent G48.
Crash Test Data:
NHTSA data for this era is limited; focus on inherent structural integrity.
ABS:
Standard Anti-lock Braking System (ABS)
Traction Control:
Optional ASC (Automatic Stability Control) available on some models.
Airbags:
Driver-side airbag typically standard, passenger airbag optional or unavailable in early production.
Seatbelts:
3-point inertia-reel seatbelts front and rear.
Body Structure:
Reinforced safety cage, crumple zones.
Radio Options:
Factory cassette player with AM/FM stereo, optional CD changer.
Climate Control:
Manual or optional automatic climate control (ECC - Electronic Climate Control).
Cruise Control:
Standard cruise control system.
Trip Computer:
Optional trip computer providing basic driving data.
Original Features:
Limited by era; focus on core vehicle functionality.
Oil Change:
Recommended every 7,500-10,000 miles (or as indicated by oil service indicator).
Spark Plugs:
Every 30,000 miles (typically copper core NGK plugs).
Coolant Flush:
Every 2 years or 30,000 miles.
Transmission Fluid Change Auto:
BMW typically stated 'lifetime' but recommended 50,000-80,000 miles for longevity.
Engine Oil Capacity:
6.5 Liters (approx. 6.9 US Quarts)
Engine Oil Viscosity:
SAE 15W-40 or 10W-40 (depending on climate).
Power Steering Fluid:
ATF Dexron II/III or Pentosin CHF 11S for some models.
Engine Mounts:
Degradation and failure leading to vibration.
Cooling System:
Plastic expansion tank and hose failures, water pump leaks.
Fuel Injectors:
Clogging or failure, leading to rough idle and poor performance.
Rear Wheel Bearings:
Can wear out, leading to noise and play.
Electrical Connectors:
Corrosion and degradation of connectors, especially in the engine bay.
Bavarian Engine Diagnostics:
The M30 engine's complexity requires specialized diagnostic tools and knowledge, covered in detail by this manual.
Legacy:
BMW's long history of producing driver-focused luxury vehicles.
Introduction E34:
The E34 generation replaced the E28 5 Series in late 1987 (for the 1988 model year in North America).
Design Philosophy:
Marked a significant evolution in BMW design, featuring more aerodynamic and integrated styling.
Manufacturing Locations:
Primarily Dingolfing, Germany.
