Market Segment:
Executive Sedan
Target Audience:
Enthusiasts and owners seeking in-depth knowledge for maintenance and repair
Key Competitors:
Mercedes-Benz W124 E-Class, Audi V8 Quattro (Type 44)
Design Philosophy:
German engineering, driver-focused ergonomics, high-quality materials
Manual Advantage:
Comprehensive coverage, step-by-step instructions, detailed illustrations surpassing generic guides
Engine Mechanical:
Complete overhaul procedures, component testing, timing belt/chain, lubrication system
Engine Management:
Fuel injection (Bosch Motronic), ignition system, emissions control, sensor diagnostics
Transmission Manual:
Clutch operation, gearbox overhaul, shift linkage adjustments
Transmission Automatic:
Fluid checks, filter replacement, general maintenance, troubleshooting common issues
Drivetrain Rear Axle:
Differential service, axle shaft replacement, driveshaft maintenance
Suspension Front:
Struts, control arms, ball joints, bushings, steering linkage
Brakes Front:
Disc brake pad and rotor replacement, caliper service, fluid flushing
Steering:
Power steering system, steering rack, tie rods, alignment procedures
Electrical System:
Battery, alternator, starter, lighting circuits, wiring diagrams, fuses and relays
Climate Control:
HVAC system diagnostics, blower motor, refrigerant service, control panel
Body Interior:
Door panel removal, seat adjustment, trim piece replacement, headliner repair
Body Exterior:
Panel alignment, bumper repair, glass replacement, trim removal
Suspension Rear:
Multi-link independent suspension, shock absorbers, bushings
Brakes Rear:
Disc brake pad and rotor replacement, caliper service, parking brake mechanism
Routine Maintenance:
Oil changes, filter replacements, fluid checks, spark plug replacement
Troubleshooting Diagnostics:
Symptom-based troubleshooting guides, diagnostic trouble codes (DTCs), component testing
Repair Rebuild:
Step-by-step instructions for component replacement and rebuilding
Alignment Adjustments:
Wheel alignment specifications and procedures, clutch and throttle cable adjustments
Wiring Diagrams:
Detailed electrical system schematics for all major circuits
Depth Level:
Comprehensive; suitable for DIY enthusiasts and professional technicians
Exploratory Detail:
Exploded views and detailed illustrations for component identification and assembly
Engine Code:
M30B25 (various sub-variants)
Engine Type:
Inline 6-cylinder, DOHC
Displacement:
2.5 Liters (2494 cc)
Horsepower:
Approximately 170 hp @ 5800 rpm (DIN)
Torque:
Approximately 226 Nm (167 lb-ft) @ 4000 rpm (DIN)
Fuel Delivery:
Bosch Motronic Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline (Premium Recommended)
Engine Layout:
Front-engine, Rear-wheel drive
Standard Transmission:
5-speed Manual (Getrag 260/5)
Optional Transmission:
4-speed Automatic (ZF 4HP22)
Clutch Type:
Hydraulically actuated single dry plate clutch
Manual Transmission Fluid:
BMW MTF LT-2 or equivalent (e.g., Pentosin MTF 2)
Automatic Transmission Fluid:
Dexron III/Mercon (or specified BMW equivalent, check manual)
Oil Change Interval:
Typically 10,000-15,000 miles or 12-24 months, depending on driving conditions (refer to manual for precise interval).
Spark Plug Replacement:
Consult manual; typically around 30,000-60,000 miles for standard plugs.
Engine Oil Specification:
BMW Longlife-98 or Longlife-01 (e.g., 5W-30, 5W-40) - consult manual for exact grade and capacity.
Coolant Specification:
BMW Blue Antifreeze (G48) or equivalent ethylene glycol-based coolant with corrosion inhibitors.
Brake Fluid Specification:
DOT 4, low viscosity (LV) recommended.
Common Wear Items:
Vibrations from driveshaft guibo and center support bearing, cooling system hoses, suspension bushings (e.g., front control arm bushings), idle control valve issues, valve cover gasket leaks.
Electrical Gremlins:
Corrosion on electrical connectors, failing Motronic relays, headlamp switch issues are not uncommon.
Preventive Maintenance:
Regular inspection and replacement of rubber components (hoses, belts, bushings) are crucial for longevity.
Bmw Legacy:
Renowned for sporty luxury sedans and advanced engineering.
E34 Introduction:
Introduced in 1987 as the successor to the E28. Designed by Claus Luthe, known for its aerodynamic efficiency and refined styling.
E34 Platform:
Shared platform with the E32 7-Series, featuring significant advancements in chassis design and suspension.
Production Period:
1987-1996 (E34 generation)
Manufacturing Hubs:
Dingolfing, Germany; Regensburg, Germany; Rosslyn, South Africa
