Engine:
Comprehensive coverage of M20, M30, M60, and M62 engines including diagnostics, overhaul, and component repair.
Transmission:
Detailed procedures for manual (Getrag 260, ZF S5-18/3) and automatic (ZF 4HP22, ZF 4HP24) transmissions, including removal, installation, overhaul, and shift control.
Drivetrain:
Rear-wheel drive system, including driveshaft, universal joints, differential, and axles. Coverage of limited-slip differentials (optional).
Suspension:
Front and rear suspension systems (MacPherson struts front, multi-link rear), including control arms, ball joints, shock absorbers, springs, sway bars, and wheel bearings.
Steering:
Hydraulic power steering system, including steering rack, pump, hoses, and steering column.
Brakes:
Hydraulic braking system, including master cylinder, brake lines, calipers, rotors, ABS system (Bosch ABS II, ABS III), and parking brake.
Electrical System:
Complete wiring diagrams, component testing, charging system (alternator, battery), starting system (starter motor), ignition system (distributor-based, coil-on-plug for later models), lighting, and auxiliary circuits.
Fuel System:
Fuel delivery (Bosch Motronic injection systems), fuel pump, injectors, fuel filter, and evaporative emissions control (EVAP).
Cooling System:
Radiator, water pump, thermostat, coolant hoses, and fan system (viscous fan clutch, electric fan).
Exhaust System:
Exhaust manifold, catalytic converter, mufflers, and exhaust pipes.
Body And Chassis:
Body panels, doors, windows, sunroof, bumpers, interior trim, and chassis structural components.
HVAC:
Heating, ventilation, and air conditioning system, including compressor, condenser, evaporator, blower motor, and climate control module.
Safety Systems:
Seat belts, airbags (early models), and ABS.
Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt inspections and replacements, brake pad and rotor service.
Troubleshooting:
Diagnostic flowcharts, symptom-based troubleshooting, fault code interpretation (OBD I).
Repair:
Engine overhaul, transmission rebuild, suspension component replacement, brake caliper overhaul, electrical component repair, body panel repair.
Installation:
Component installation and removal procedures for all major systems.
Specifications And Tolerances:
Torque specifications, clearances, measurements, and alignment data.
Wiring Diagrams:
Detailed, system-specific wiring schematics for all electrical components.
Depth Of Coverage:
Comprehensive factory-level detail suitable for professional technicians and advanced DIY enthusiasts. Covers everything from basic maintenance to full engine and transmission overhauls.
525I Engine:
2.5L M20B25 Inline-6 (early 1989-1990), 2.5L M50B25 Inline-6 (late 1990-1995) - VANOS optional on later M50
530I Engine:
3.0L M60B30 V8 (1992-1995)
535I Engine:
3.5L M30B34 Inline-6 (1989-1993)
540I Engine:
4.0L M60B40 V8 (1993-1995)
525I Horsepower M50:
189 hp @ 5900 rpm (approx.)
525I Torque M50:
181 lb-ft @ 4200 rpm (approx.)
530I Horsepower M60:
215 hp @ 5800 rpm (approx.)
530I Torque M60:
214 lb-ft @ 4500 rpm (approx.)
535I Horsepower M30:
208 hp @ 5700 rpm (approx.)
535I Torque M30:
225 lb-ft @ 4000 rpm (approx.)
540I Horsepower M60:
282 hp @ 5000 rpm (approx.)
540I Torque M60:
295 lb-ft @ 4000 rpm (approx.)
Fuel Injection System:
Bosch Motronic (various versions depending on engine and year)
Fuel Type:
Unleaded gasoline (Premium)
Engine Control Unit:
ECU with OBD I diagnostics.
525I Standard Transmission:
5-speed Manual (Getrag 260)
535I Standard Transmission:
5-speed Manual (Getrag 260)
530I/540I Standard Transmission:
5-speed Manual (ZF S5-18/3) for 530i, 6-speed Manual optional on later 540i
525I Optional Transmission:
4-speed Automatic (ZF 4HP22)
535I Optional Transmission:
4-speed Automatic (ZF 4HP22)
530I/540I Optional Transmission:
4-speed Automatic (ZF 4HP24 for 540i, ZF 4HP22 for 530i)
Traction Control:
ASC (Automatic Stability Control) or ASC+T (with Traction Control) available on later models.
Oil Change Interval:
Typically every 7,500-10,000 miles (12,000-16,000 km) or annually, depending on driving conditions and oil type. Check Engine Oil Service light for precise intervals.
Spark Plug Replacement:
M20/M30: ~30,000 miles. M50/M60: ~60,000 miles (depending on plug type, copper vs. platinum).
Coolant Flush:
Every 2-3 years or 30,000-50,000 miles.
Engine Oil Type:
SAE 5W-30 or 5W-40 synthetic recommended. Consult owner's manual for specific viscosity based on climate and engine.
Transmission Fluid Manual:
API GL-4 or GL-5 gear oil (e.g., Castrol TWS 75W-90 or equivalent).
Transmission Fluid Automatic:
BMW ATF Dexron III or equivalent (e.g., Pentosin ATF1).
Coolant Type:
BMW Blue Antifreeze/Coolant (G48 specification) or equivalent ethylene glycol-based coolant mixed 50/50 with distilled water.
Brake Fluid Type:
DOT 4 brake fluid.
Common Issues Engine:
M50 VANOS rattle/failure, M60 coolant pipe leaks (plastic elbows), M30 oil leaks (valve cover, oil pan).
Common Issues Electrical:
ABS/ASC sensor failures, instrument cluster pixelation, wiring harness degradation (especially around engine bay), door lock actuator issues.
Common Issues Suspension:
Front control arm bushings (vibrations), rear trailing arm bushings, sagging springs, worn shock absorbers.
Common Issues Body:
Rust in typical BMW areas (fender arches, rocker panels, sunroof drain channels), headliner sagging.
Common Issues HVAC:
Blower motor resistor failure, blend door actuator failure, evaporator leaks.
Bmw Philosophy:
BMW's long-standing reputation for building driver-focused, high-performance luxury vehicles.
E34 Introduction:
Introduced in 1988 (as a 1989 model year) in Europe, North America followed shortly after. Replaced the E28 5 Series.
E34 Facelift:
Minor facelift around 1994, including updated kidney grilles, revised bumpers, and interior trim changes. Introduction of M60 V8 engines.
Touring Variant:
The E34 Touring (wagon) was introduced in 1991 and added significant practicality to the 5 Series line-up.
Production Period:
1988-1996 (globally, with North American market ending in 1995).
Manufacturing Locations:
Primary production in Dingolfing, Germany.