Target Audience:
BMW enthusiasts, independent repair shops, DIY mechanics working on E34 5 Series models.
Market Standing:
The E34 was a highly regarded executive sedan known for its driving dynamics, build quality, and technological advancements for its era. This manual provides access to that same level of detail for maintenance and repair.
Manual Value Proposition:
Provides in-depth technical guidance crucial for maintaining and repairing the sophisticated E34 platform, empowering owners and technicians with factory-level knowledge.
Manual Type:
Workshop Service Repair Manual (FSM for DIY)
Applicable Years:
1989, 1990, 1991, 1992, 1993, 1994, 1995
Covered Models:
525i, 530i, 535i, 540i
Engine Systems:
Engine overhaul, cylinder head removal, cylinder head and valvetrain, lubrication system, camshaft timing chain, ignition system, fuel injection, radiator and cooling system, exhaust system.
Drivetrain Systems:
Automatic transmission, manual transmission.
Comfort Systems:
Heating, air conditioning.
Safety Systems:
Airbag system (though description links ABS, it is likely covering the airbag control module and deployment system).
Body And Electrical:
Body, wiring diagrams.
Maintenance Procedures:
Scheduled maintenance, fluid checks and changes, filter replacements, belt inspections.
Diagnostic Procedures:
Troubleshooting guides for various systems, diagnostic codes (likely engine management).
Repair Procedures:
Step-by-step instructions for component removal, installation, and repair across all covered systems.
Special Procedures:
Camshaft timing chain replacement, fuel injection system servicing, transmission overhaul, airbag system servicing.
Depth Level:
Comprehensive, covering everything from basic maintenance to major component overhauls and complex electrical diagnostics via wiring diagrams.
Engine Type:
3.0L (2997 cc) Inline-6, DOHC, 24 valves
Bore X Stroke:
84.0 mm x 90.0 mm (approx)
Compression Ratio:
8.8:1 (approx)
Horsepower Hp:
189 hp @ 5,800 rpm (approx)
Torque Lb Ft:
181 lb-ft @ 4,700 rpm (approx)
Engine Type:
3.0L (2997 cc) V8, DOHC, 32 valves
Horsepower Hp:
215 hp @ 5,800 rpm (approx)
Torque Lb Ft:
214 lb-ft @ 4,500 rpm (approx)
Engine Type:
3.5L (3430 cc) Inline-6, SOHC, 12 valves
Bore X Stroke:
92.0 mm x 86.0 mm (approx)
Compression Ratio:
8.0:1 to 8.5:1 (depending on market/variant)
Horsepower Hp:
208 hp @ 5,700 rpm (approx)
Torque Lb Ft:
225 lb-ft @ 4,000 rpm (approx)
Engine Type:
4.0L (3982 cc) V8, DOHC, 32 valves
Bore X Stroke:
84.0 mm x 90.0 mm (approx)
Compression Ratio:
10.0:1 (approx)
Horsepower Hp:
282 hp @ 5,800 rpm (approx)
Torque Lb Ft:
295 lb-ft @ 4,500 rpm (approx)
Fuel Delivery:
Bosch Motronic electronic fuel injection (specific version varies by engine/year).
ECM Type:
Bosch Motronic (e.g., Motronic 3.3, 3.3.1, 3.7 for different models/years).
525I/530I/535I:
Getrag 260/5 5-speed manual transmission.
525I/530I/535I/540I:
ZF 4HP22 4-speed automatic transmission (later models may have ZF 5HP18/5HP24).
Clutch Type:
Hydraulically actuated single dry plate clutch (manual transmission).
Manual Transmission Fluid:
BMW recommends specific gear oil, often a synthetic GL-4 or GL-5 rated fluid. Check manual for exact specification (e.g., SAE 75W-90).
Automatic Transmission Fluid:
Dexron III or equivalent ATF fluid. Capacity typically 7-9 liters for a full flush.
E34 Sedan:
Approx. 4720 mm (185.8 in)
E34 Sedan:
Approx. 1751 mm (68.9 in)
E34 Sedan:
Approx. 1412 mm (55.6 in)
E34 Sedan:
Approx. 2760 mm (108.7 in)
Curb Weight:
Varies by model, roughly 1500-1700 kg (3300-3750 lbs).
Airbags:
Driver and passenger airbags (standard on later models, optional on early ones). Manual covers system operation and potential diagnostics.
Seatbelts:
3-point inertia reel seatbelts with pretensioners (front).
Body Structure:
Reinforced passenger cell, crumple zones front and rear.
ABS:
Anti-lock Braking System (ABS) available on most models.
Traction Control:
Optional ASC+T (Automatic Stability Control + Traction) on some models.
Audio System:
Factory premium audio systems (e.g., BMW Bavaria C, BMW Professional RDS) with cassette and radio. Optional CD changer.
Cruise Control:
Standard on most models.
Climate Control:
Manual or optional automatic climate control (dual-zone).
Onboard Diagnostics:
OBD-I system, with diagnostic connectors accessible for fault code retrieval (covered in manual).
Oil Change Interval:
Typically every 7,500-10,000 miles (12,000-16,000 km) or annually, depending on driving conditions. Consult manual for specific recommendations based on oil type and model year.
Spark Plug Replacement:
Intervals vary by spark plug type (conventional, platinum, iridium). Often around 30,000-60,000 miles. Check manual for precise specs and part numbers.
Coolant Replacement:
Every 2-4 years or 30,000-50,000 miles. Use BMW-approved coolant (e.g., BMW Antifreeze/Coolant concentrate).
Engine Oil Type:
BMW recommends synthetic oils meeting specific API and ACEA specifications, and often BMW Longlife specifications (e.g., LL-98 or LL-01 depending on year and engine). Viscosity typically 5W-30 or 5W-40. Consult manual for exact grade.
Brake Fluid Type:
DOT 4 (or DOT 3 for some earlier systems). BMW recommends their own branded brake fluid.
Common Problems E34:
Headliner sagging, cooling system components (radiator, water pump, hoses), fuel pump failure, VANOS seal wear (on M50 engines), oil pan gasket leaks, ABS sensor failures, fuel injector issues, starter solenoid failure.
Air Filter Example:
For 525i (M50 engine), a common part number range is Mann-Filter C 35 160 / 1 or Mahle LX 92. Refer to manual for precise OE or equivalent part numbers.
Oil Filter Example:
For 525i (M50 engine), a common part number is Mann-Filter W 914/2 or Mahle OC 196. Refer to manual for precise OE or equivalent part numbers.
Bmw Philosophy:
BMW's reputation for building driver-focused, high-quality sedans with advanced engineering.
E34 Introduction:
Launched in 1988 (Europe) and 1989 (North America) as a successor to the E28 5 Series. Known for its advanced aerodynamics, chassis refinements, and introduction of V8 engines to the 5 Series line.
E34 Facelift:
Significant updates occurred in 1994, including revised bumpers, exterior trim, and interior enhancements. The 540i and 530i V8 models were introduced later in the E34's lifecycle.
Production Period:
1987-1996 (globally, with 1989-1995 being the primary period for the North American market and covered by this manual).
Manufacturing Sites:
Primarily Dingolfing, Germany.