Engine Mechanical:
Full engine overhaul, timing belt/chain, pistons, rings, bearings, cylinder heads, valves, camshafts, crankshaft, lubrication system, cooling system.
Engine Management:
Fuel injection (Bosch Motronic), ignition system, sensors (MAF, O2, TPS, Crankshaft Position), ECU diagnosis and troubleshooting, emissions control systems.
Transmission Manual:
Clutch, gearbox components, gear selection, driveshafts, differential, fluid changes.
Transmission Automatic:
Torque converter, valve body, planetary gear sets, transmission control module (TCM), hydraulic systems, fluid and filter changes, diagnostic procedures.
Brakes:
Hydraulic system, ABS (Anti-lock Braking System) components, master cylinder, calipers, rotors, brake pads, bleeding procedures, diagnostic codes.
Suspension:
Front and rear suspension components (struts, shock absorbers, control arms, ball joints, bushings), alignment specifications, troubleshooting.
Steering:
Power steering system, steering rack, tie rods, troubleshooting leaks and play.
Electrical System:
Wiring diagrams, battery, alternator, starter motor, lighting, fuses, relays, power windows, door locks, mirrors, instrument cluster, diagnostics.
HVAC:
Heating, Ventilation, and Air Conditioning (HVAC) system operation, refrigerant, compressor, blower motor, climate control unit, troubleshooting.
Bodywork:
Exterior body panels, doors, hood, trunk, bumpers, interior trim, glass replacement, sealing.
Diagnostics Troubleshooting:
Diagnostic trouble codes (DTCs), fault finding procedures, common symptoms and their causes.
Maintenance:
Scheduled maintenance, oil changes, filter replacements, tune-ups, fluid checks and replacements.
Repair:
Component removal and installation, rebuild procedures for major components, electrical system repairs.
Troubleshooting:
Step-by-step diagnostic guides for common and uncommon issues.
Specifications:
Torque specifications for fasteners, clearances, fluid capacities, electrical values.
Depth:
Comprehensive, covering from basic maintenance to complete engine and transmission overhauls, electrical diagnostics, and bodywork.
Engine Code And Type:
M30B34, 3.4-liter (3430 cc) SOHC inline-6
Horsepower:
Approximately 208 hp (155 kW) at 5700 rpm (Euro spec, US spec may vary slightly)
Torque:
Approximately 232 lb-ft (315 Nm) at 4000 rpm (Euro spec, US spec may vary slightly)
Fuel Delivery:
Bosch Motronic electronic fuel injection (EFI)
Block And Head Material:
Cast iron block, aluminum alloy cylinder head
Dimensions:
92.0 mm bore x 86.0 mm stroke
Ratio:
8.0:1 (typical for US spec)
Type:
Distributorless ignition (DIS) controlled by Motronic ECU
Transmission Type Standard:
4-speed automatic (GM 4L30-E)
Transmission Type Optional:
5-speed manual (Getrag 265/6)
Automatic Modes:
Sport and Economy modes (often selectable)
Automatic Transmission Fluid:
Dexron III or equivalent (Consult manual for exact specification and capacity)
Manual Transmission Fluid:
BMW SYNTRANZ 75W-90 or equivalent (Consult manual for exact specification and capacity)
Oil Change Interval:
Typically every 7,500-10,000 miles or 12 months, depending on driving conditions (check manual for exact recommendation).
Spark Plug Replacement:
Refer to manual, but generally around 30,000-60,000 miles for standard plugs.
Coolant Flush:
Typically every 2-3 years or 30,000 miles.
Engine Oil Type:
SAE 5W-30 or 5W-40 synthetic (Refer to manual for specific BMW LL-01 or LL-04 approval if applicable, though LL-01 is more likely for this era).
Engine Oil Capacity:
Approximately 6.5 liters (6.9 US quarts) with filter change.
Coolant Type:
BMW Blue Antifreeze/Coolant or equivalent G48 ethylene glycol-based coolant.
Common M30 Engine Problems:
Oil leaks (valve cover gasket, oil pan gasket), cooling system component failures (water pump, hoses, thermostat), potential head gasket issues under extreme conditions, fuel distributor issues.
Common E34 Chassis Problems:
Front suspension bushings (control arm bushings, sway bar bushings), rear subframe bushings, ABS sensor failures, HVAC blower motor resistor failure, door seal degradation.
Oil Filter Example:
Mann-Filter W921/7, Mahle OX103/1D, Bosch 0986452040 (Verify specific fitment)
Air Filter Example:
Mann-Filter C36145/3, Mahle LX519, Bosch 1457433700 (Verify specific fitment)