Engine Management:
Fuel Injection (Bosch Motronic variants), Ignition Systems, Engine Control Unit (ECU) diagnostics and repair.
Engine Mechanical:
Complete engine teardown and reassembly, cylinder head, piston, crankshaft, camshafts, timing, oil pump, lubrication system.
Fuel System:
Fuel pump, fuel injectors, fuel pressure regulator, fuel tank, fuel lines, emission control systems.
Cooling System:
Radiator, water pump, thermostat, cooling fans, hoses, expansion tank.
Exhaust System:
Exhaust manifolds, catalytic converters, mufflers, exhaust pipes, oxygen sensors.
Transmission Manual:
Clutch assembly, gearbox internals, shift linkage, driveshafts, clutch hydraulics.
Transmission Automatic:
Automatic transmission types (e.g., ZF 4HP22, 4HP24), valve body, torque converter, transmission control unit, cooler lines.
Suspension Front:
MacPherson struts, control arms, ball joints, sway bar, steering knuckles, springs, shock absorbers.
Suspension Rear:
Multi-link independent suspension, trailing arms, control arms, shock absorbers, springs, sway bar.
Steering System:
Power steering pump, steering rack/box, tie rods, steering column, steering wheel.
Braking System:
Front and rear disc brakes, calipers, rotors, master cylinder, ABS (Anti-lock Braking System) components, brake lines, parking brake.
Wheels Tires:
Wheel specifications, tire pressure recommendations, lug nut torque settings, wheel bearing replacement.
Electrical System Power:
Battery, alternator, starter motor, wiring diagrams for power distribution.
Electrical System Lighting:
Headlights, taillights, interior lighting, fog lights, bulb replacement, wiring.
Electrical System Accessories:
Power windows, power locks, sunroof, wipers, horn, seat adjustment, mirrors, central locking system.
Bodywork Exterior:
Body panel removal/installation, doors, hood, trunk, bumpers, fenders, glass replacement, seals.
Bodywork Interior:
Dashboard removal, trim panels, seats, carpeting, headliner, HVAC controls.
Climate Control:
Air conditioning system (compressor, refrigerant, evaporator, condenser), heating system, blower motor, climate control modules.
Safety Systems:
Seat belts, airbags (if equipped), ABS diagnostics.
Routine Maintenance:
Oil and filter changes, air filter replacement, spark plug replacement, coolant flush, brake fluid flush, transmission fluid changes.
Troubleshooting:
Diagnostic procedures for common issues, fault codes, symptom-based troubleshooting guides.
Repair Rebuilds:
Engine rebuilds (detailed), transmission overhauls, differential repair, suspension component replacement, brake caliper rebuilding.
Diagnostics:
ECU diagnostics, sensor testing, actuator testing, electrical system tracing.
Installation:
Component installation procedures, accessory fitting.
Depth:
Extremely detailed, covering everything from basic maintenance to complete engine and transmission rebuilds, including electrical system schematics.
Diagrams:
Detailed step-by-step diagrams, exploded views, and electrical wiring schematics.
Torque Specifications:
Comprehensive list of torque settings for all critical fasteners.
Fluid Capacities:
Precise fluid capacities for all vehicle systems (engine oil, coolant, transmission fluid, brake fluid, etc.).
Oil Change Interval:
Typically 7,500 to 10,000 miles (12,000 to 16,000 km) or 12 months, depending on driving conditions (refer to manual for exact recommendations).
Spark Plug Replacement:
Varies by engine type; e.g., approximately 30,000 miles for standard plugs, potentially longer for platinum/iridium.
Coolant Flush:
Every 2-3 years or 30,000 miles (48,000 km).
Engine Oil:
Refer to manual for specific grades based on engine and climate; commonly synthetic SAE 0W-40, 5W-30, 5W-40, 10W-40, 10W-60.
Coolant:
BMW Blue or Green antifreeze (ethylene glycol based) mixed with distilled water (50/50 ratio).
Transmission Fluid Manual:
GL-4 or GL-5 gear oil, specific viscosity as per manual (e.g., 75W-90, 80W-90).
Transmission Fluid Automatic:
Dexron II or III (ZF specifications).
Common Wear Items:
Cracked dashboards, headliner sag, sagging door cards, aging rubber hoses and seals, valve cover gasket leaks, coolant leaks (water pump, thermostat housing), rear subframe mounting points, blower motor resistor, ABS sensor failures.
E34 Specific Concerns:
VANOS unit issues on M50 engines, potential head gasket failure on M60 V8s due to overheating, EGS (transmission control) module failures.