Engine Mechanical:
Complete overhaul, assembly, disassembly, timing, cooling system, lubrication system, fuel delivery, emission control systems, engine management (DME).
Engine Performance:
Diagnosis and tuning, power output specifications, performance enhancements.
Fuel System:
Fuel injection (Bosch Motronic), fuel pump, injectors, fuel pressure regulator, fuel tank, fuel lines, emissions control related to fuel system.
Transmission Manual:
Clutch, gearbox (Getrag 260/5), shift mechanism, drive shafts, differential, lubrication, repair procedures.
Transmission Automatic:
ZF 4HP22 automatic transmission, hydraulic control, torque converter, shift solenoids, valve body, repair, overhaul, fluid specifications.
Suspension:
Front suspension (MacPherson struts, control arms), rear suspension (semi-trailing arms), springs, shock absorbers, bushings, alignment specifications.
Steering:
Power steering system, steering rack, pump, hydraulic lines, steering column, steering angle sensor (if applicable).
Brakes:
Front disc brakes (vented), rear disc brakes, ABS (Anti-lock Braking System), brake fluid type, bleeding procedures, caliper and rotor replacement, parking brake.
Electrical System:
Battery, alternator, starter motor, ignition system, lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, diagnostic connector.
Engine Management:
Bosch Motronic DME, sensors (crankshaft position, camshaft position, throttle position, coolant temp, air flow meter), actuators (idle control, fuel injectors), troubleshooting and diagnostics.
Bodywork:
Body panel removal and installation, door mechanisms, window regulators, seals, bumpers, corrosion protection.
Interior:
Seating, dashboard, trim panels, HVAC controls, instrument cluster, sound system.
Heating Ventilation Air Conditioning:
HVAC system operation, blower motor, heater core, A/C compressor, refrigerant, climate control panel, troubleshooting.
Routine Maintenance:
Oil change, filter replacement, spark plug replacement, coolant flush, brake fluid flush, transmission fluid change, differential fluid change.
Troubleshooting:
Diagnostic procedures for common and uncommon issues, symptom-based troubleshooting guides, wiring diagram interpretation.
Repair Overhaul:
Step-by-step instructions for major component repairs and full overhauls (engine, transmission, suspension, brakes).
Diagnostic Procedures:
ECU fault codes (if applicable via diagnostic connector), sensor testing, component testing using multimeters and oscilloscopes.
Specifications Data:
Torque specifications for all fasteners, clearances, tolerances, electrical system voltages and resistances.
Special Tools:
Identification of specialized tools required for specific repair procedures.
Depth:
Comprehensive, covering everything from basic maintenance to full engine and transmission rebuilds, including detailed diagnostics and electrical schematics.
Oil Change Interval:
Every 5,000-7,500 miles (8,000-12,000 km) or annually, whichever comes first.
Spark Plug Replacement:
Every 30,000 miles (48,000 km)
Coolant Flush:
Every 2-3 years
Brake Fluid Flush:
Every 2 years
Engine Oil:
API SG or SH, SAE 10W-40 or 5W-40 synthetic blend (refer to manual for exact BMW approval)
Engine Oil Capacity:
6.5 US quarts (6.2 liters) with filter
Coolant:
BMW Blue Antifreeze/Coolant or equivalent silicate-free ethylene glycol-based coolant
Coolant Capacity:
2.5 US gallons (9.5 liters) approx.
Manual Transmission Fluid:
ATF Dexron III or equivalent (e.g., Pentosin ATF1100)
Automatic Transmission Fluid:
ATF Dexron III or equivalent (e.g., Pentosin ATF1100)
Differential Fluid:
SAE 75W-90 synthetic gear oil
Power Steering Fluid:
BMW CHF 11S or equivalent Pentosin hydraulic fluid
Engine Oil Leaks:
Common due to aging seals and gaskets (e.g., valve cover gasket, oil pan gasket, front/rear main seals).
Cooling System:
Plastic expansion tank cracks, water pump failure, thermostat issues, fan clutch failure.
Suspension Bushings:
Wear and tear on control arm bushings, trailing arm bushings, and sway bar links, leading to poor handling and noise.
Electrical Gremlins:
Corrosion in wiring harnesses, failing relays, instrument cluster issues, door lock actuators.
Fuel System:
Clogged fuel injectors, failing fuel pumps, DME issues.
ABS System:
ABS sensor failures, ABS control unit issues.