Segment:
Executive Sedan/Sports Sedan
Usp:
Blend of luxury, performance, and driving dynamics
Key Competitors:
Mercedes-Benz E-Class (W124), Audi 100/200 (C3/C4), Lexus LS 400, Jaguar XJ
Design Philosophy:
Chris Bangle's design influence, aerodynamic efficiency, timeless BMW aesthetics
Engineering Focus:
Driver-centric handling, robust powertrain, refined ride comfort
Primary Coverage:
All E34 models and engine variants
Specific Models Covered:
520i, 525i, 530i, 535i, 540i, 524td, M5
Trim Levels Covered:
All standard and optional trim levels
Transmission Coverage:
All manual and automatic transmissions
Estimated Page Count:
Thousands (typical for comprehensive workshop manuals)
Type:
Workshop Repair Service Manual
Engine Mechanical:
Engine assembly, cylinder head, crankshaft, pistons, connecting rods, lubrication system, cooling system, timing system
Engine Management:
Fuel injection (Bosch Motronic variants), ignition system, sensors, actuators, emission control systems
Transmission Manual:
Clutch, gearbox overhaul, shifting mechanisms, driveline
Transmission Automatic:
Gearbox overhaul, hydraulic control, torque converter, electronic control unit (ECU) interfaces
Suspension:
Front suspension (MacPherson strut, multi-link), rear suspension (multi-link), dampers, springs, control arms, bushings
Steering:
Power steering system, steering rack, steering column, wheel alignment specifications
Brakes:
Hydraulic system, ABS (Anti-lock Braking System) operation and diagnostics, brake pads, rotors, calipers, parking brake
Electrical System:
Battery, charging system (alternator), starting system, wiring diagrams, fuses, relays, lighting, horn, wipers
Body And Chassis:
Body structure, panels, doors, hood, trunk, glass, exterior trim, interior trim, sound deadening
Climate Control:
HVAC system, blower motor, refrigerant system, heater core, AC compressor
Comfort And Convenience:
Power windows, power locks, central locking, mirrors, seats, sunroof (if equipped)
Maintenance Tasks:
Oil changes, filter replacements, spark plug changes, coolant flushes, brake fluid replacement, air filter replacement, belt replacement
Troubleshooting:
Diagnostic procedures for engine performance, electrical faults, drivability issues, starting problems, heating/cooling issues
Repair Procedures:
Detailed step-by-step instructions for component removal, installation, and repair of all major systems
Diagnostics:
OBD-I (On-Board Diagnostics) codes and interpretation, specific BMW diagnostic routines
Special Tools:
Identification and usage of specialized BMW tools required for certain procedures
Depth:
Comprehensive: from basic maintenance to complete engine and transmission overhauls
Engine Options 1989:
M20B20 (2.0L Inline-6), M30B25 (2.5L Inline-6), M30B35 (3.5L Inline-6)
Diesel Option:
M21D24 (2.4L Inline-6 Turbo Diesel)
2.0L (M20B20):
Approx. 129 hp @ 5800 rpm, 174 Nm @ 4300 rpm
2.5L (M30B25):
Approx. 170 hp @ 5800 rpm, 226 Nm @ 4300 rpm
3.0L (Later E34), M30B30:
Approx. 197 hp @ 5800 rpm, 270 Nm @ 4300 rpm (Not in 1989 model, but relevant for E34 range)
3.5L (M30B35):
Approx. 208 hp @ 5700 rpm, 305 Nm @ 4000 rpm
2.4L Td (M21D24):
Approx. 115 hp @ 4800 rpm, 210 Nm @ 2400 rpm
Injection Type:
Bosch Motronic Fuel Injection (various versions depending on engine)
Fuel Type:
Unleaded Gasoline (Octane rating as per manual recommendations)
Crash Test Era:
Pre-modern safety rating systems, emphasis on passive safety features of the era
ABS:
Standard on most models by 1989
Traction Control:
ASC (Automatic Stability Control) available on some later models, not standard on 1989
Airbags:
Driver's airbag optional on some models, not standard in 1989
Seatbelts:
3-point inertia-reel seatbelts front and rear
Body Construction:
Reinforced safety cell, crumple zones
Oil Change Interval:
Typically 10,000-15,000 km or 12 months, depending on oil type and driving conditions (refer to manual for specifics)
Spark Plug Replacement:
Varies by engine and plug type (e.g., 20,000-40,000 km)
Coolant Flush:
Every 2-3 years or as recommended by BMW
Engine Oil Type:
Refer to manual for specific viscosity (e.g., 5W-30, 10W-40) and API/ACEA specifications, often BMW Longlife-98 or similar
Coolant Type:
Ethylene Glycol based antifreeze, typically blue or green (check manual for specific BMW coolant)
Brake Fluid Type:
DOT 3 or DOT 4 (refer to manual)
Transmission Fluid Auto:
Dexron II or equivalent (specific BMW part number recommended)
Transmission Fluid Manual:
GL-4 or GL-5 gear oil (specific viscosity)
Common Problems:
Cooling system leaks (hose degradation, water pump), VANOS issues (on later 6-cyl models, not 1989 6-cyls), fuel pump failures, ABS sensor issues, window regulator failures, heater control valve leaks, rust (wheel arches, sills)
Diagnostic Tips:
Check engine mounts for wear, inspect vacuum lines for cracks, verify fuel pressure, listen for unusual noises from suspension and drivetrain
Bmw Legacy:
Renowned for performance, luxury, and engineering innovation since its inception.
E34 Development:
Successor to the E28, represented a significant step forward in design, technology, and refinement.
Design Era:
Launched in 1988, E34 was BMW's first 'modern' executive sedan, influencing future BMW designs.
Production Years:
1987-1996 (E34 generation)
Manufacturing Location:
Germany (Dingolfing plant primarily)
