Positioning:
The E34 generation BMW 5 Series represented a significant step in executive sedan design and engineering, blending performance, luxury, and advanced technology for its era. It competed against vehicles like the Mercedes-Benz W124 E-Class and Audi V8/A8.
Comparison:
The E34 offered a superior driving dynamic and sportier feel compared to many of its German luxury sedan competitors, with a focus on driver engagement and sophisticated independent suspension systems.
Design:
Iconic 'Hofmeister kink' rear window design, aerodynamic styling, well-appointed interior, and advanced chassis dynamics.
Performance Options:
A wide range of smooth inline-six and V8 engines, providing excellent power delivery and refinement.
Dealer Equivalency:
This manual is equivalent to the factory-issued workshop manuals used by authorized BMW dealerships, providing the same level of detail and accuracy.
Years Covered:
1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996
Body Styles Covered:
Sedan (4-door), Touring (5-door Wagon)
Engine Variants Covered:
All E34 gasoline and diesel engines within the specified years
Estimated Page Count:
Thousands (typical for professional workshop manuals)
Type:
Workshop Service & Repair Manual
Format:
Downloadable Digital Format (likely PDF)
Engine:
Detailed diagnostics, repair, overhaul procedures for all E34 engines (M20, M30, M50, M52, M60, M62, M51 Diesel, etc.), including fuel injection, ignition, cooling, lubrication, exhaust systems.
Transmission:
Manual and automatic transmission repair, overhaul, fluid changes, diagnostics, driveshafts, differential.
Brakes:
Hydraulic system, ABS, brake caliper service, rotor replacement, brake fluid bleeding, parking brake.
Suspension Steering:
Front and rear suspension components (struts, shocks, control arms, bushings, springs), power steering system, steering rack/box.
Electrical System:
Wiring diagrams, component testing, diagnosis of lighting, power windows, seats, mirrors, central locking, starter, alternator, battery, fuses, relays, ECU diagnostics.
Climate Control:
HVAC system diagnosis, refrigerant handling, component replacement (compressor, evaporator, heater core), climate control unit.
Body Interior:
Body panel removal/installation, door mechanisms, interior trim, seat removal, glass replacement, chassis specifications.
Diagnostics:
Troubleshooting guides, fault code interpretation (where applicable), diagnostic procedures for various systems.
Maintenance:
Oil change intervals, filter replacements, spark plug service, belt tensioning, fluid checks and top-ups, brake inspection.
Repair:
Step-by-step instructions for component replacement, engine rebuilds, transmission overhauls, suspension and brake work, electrical component repair.
Troubleshooting:
Systematic diagnostic trees for common and uncommon faults.
Adjustments:
Valve adjustments (where applicable), clutch adjustments, parking brake adjustments.
Depth:
Comprehensive, covering everything from basic maintenance to complete engine and transmission rebuilds, electrical system diagnostics, and chassis work. Suitable for professional technicians and advanced DIYers.
Engine List:
M20B25 (2.5L I6), M30B35 (3.5L I6), M50B25/TU (2.5L I6), M52B28 (2.8L I6), M60B30 (3.0L V8), M60B40 (4.0L V8), M62B35 (3.5L V8), M62B44 (4.4L V8), M51D25 (2.5L Turbo Diesel I6).
Typical Horsepower Range:
170 hp (520i) to 310 hp (540i) depending on engine variant.
Typical Torque Range:
220 Nm (520i) to 450 Nm (540i) depending on engine variant.
Injection Type:
Bosch Motronic electronic fuel injection (EFI) across most gasoline variants.
Type:
Distributorless ignition system (DIS) on later models (M50 onwards), with coil-on-plug or coil-near-plug configurations.
ECU Systems:
Various Bosch Motronic ECUs depending on engine and year, crucial for understanding diagnostics.
Crash Testing Era:
Tested under older safety standards. Comprehensive official crash test ratings from this era are less standardized than modern NCAP results.
ABS:
Anti-lock Braking System (ABS) was standard or optional on most models, crucial for maintaining steering control during hard braking.
Traction Control:
Automatic Stability Control (ASC) or Automatic Stability Control + Traction (ASC+T) became available on higher-end models later in the E34's life.
Airbags:
Driver's airbag became standard on most models from 1994 onwards. Passenger airbags were optional or standard on later models.
Seatbelts:
Pre-tensioned front seatbelts.
Radio Systems:
BMW Bavaria C, Bavaria C Business, Bavaria C Professional RDS radios. Optional CD changers available.
On Board Computer:
Early On-Board Computer (OBC) provided diagnostics, trip computer functions, and service reminders.
Cruise Control:
Standard or optional on most models, a key luxury feature for its time.
Phone Integration:
Optional integrated car phone systems were available on some higher-spec models.
Oil Change:
Typically every 10,000-15,000 km or 12 months (depending on oil quality and driving conditions). Check On-Board Computer (OBC) for specific service indicators (e.g., 'Oil Service', 'Inspection I', 'Inspection II').
Spark Plugs:
Intervals vary by engine; typically 30,000-60,000 km. Platinum or long-life plugs may extend this.
Coolant Flush:
Every 2-4 years or as recommended by BMW, using appropriate G48 coolant concentrate.
Engine Oil:
API SG or higher; ACEA A2/A3. Viscosity: SAE 5W-30, 5W-40, 10W-40, 10W-50 depending on temperature and engine (refer to manual for specifics).
Transmission Fluid Manual:
API GL-4 or GL-5 gear oil. Specific types like ATF Dexron II or III for some manual transmissions.
Transmission Fluid Automatic:
BMW ATF LT-2 or Dexron II/III. Crucial to use the correct type for ZF transmissions.
Coolant:
BMW Coolant Antifreeze (G48) or equivalent ethylene glycol-based coolant with corrosion inhibitors.
Vanos System:
Variable Valve Timing (VANOS) on M50TU/M52 engines can develop issues leading to rough idle, loss of low-end torque. Seals need replacement.
Cooling System:
Plastic expansion tanks, water pumps, and hoses are prone to cracking and failure, especially after many years. Regular inspection and replacement are vital.
Headliner:
Fabric often sags due to adhesive failure over time.
Electrical Connectors:
Corrosion and degradation of grounds and connectors can cause intermittent electrical faults.
Subframe Bushings:
Rear subframe bushings can wear out, leading to clunking noises and poor handling. Replacement is a common repair.
Window Regulators:
Motorized window regulators are a common failure point, often resulting in windows not working.
Bmw History:
BMW's legacy is built on sporty luxury sedans and performance-oriented engineering, with the 5 Series being a cornerstone of its lineup.
E34 Introduction:
The E34 succeeded the E28 and was produced from 1988 (as a 1989 model) to 1996. It introduced significant advancements in aerodynamics, suspension, and technology.
E34 Facelift:
A mid-cycle facelift occurred in 1994, introducing updated bumpers, door mirrors, revised engine management (M50TU/M52), and clearer headlight lenses.
Production Period:
1988-1996
Key Variants:
520i, 525i, 530i, 535i, 540i, 524td, 525td, 525tds, M5 (E34 - S38 engine).
