Engine Mechanical:
Complete overhaul, assembly, disassembly, component inspection and replacement
Fuel System:
Fuel injection system (Bosch L-Jetronic), fuel pump, injectors, fuel pressure regulator, fuel tank service
Ignition System:
Ignition coil, distributor, spark plugs, timing adjustments, electronic control unit (ECU) diagnostics
Cooling System:
Radiator, water pump, thermostat, coolant hoses, fan clutch, heater core service and repair
Exhaust System:
Exhaust manifold, catalytic converter (if applicable), muffler, pipes, hangers
Transmission Manual:
Clutch system, gearbox overhaul, gear selection mechanism, driveshafts, universal joints
Transmission Automatic:
Automatic transmission (ZF 4HP22) overhaul, hydraulic control, torque converter service, fluid and filter changes
Suspension:
Front McPherson strut, rear semi-trailing arm suspension, control arms, ball joints, bushings, shock absorbers, springs
Steering:
Power steering system, steering rack and pinion, steering column, tie rod ends, alignment procedures
Brakes Front:
Ventilated disc brakes, brake calipers, pads, rotors, brake lines, hydraulic system bleeding
Brakes Rear:
Solid disc brakes, brake calipers, pads, rotors, parking brake mechanism, brake lines
Electrical System Charging:
Alternator, voltage regulator, battery service, wiring diagrams for charging circuit
Electrical System Starting:
Starter motor, starter solenoid, ignition switch, wiring diagrams for starting circuit
Lighting System:
Headlights, taillights, brake lights, turn signals, interior lighting, wiring and bulb replacement
Instrument Panel:
Dashboard layout, gauge cluster service, warning lights, switchgear repair
Body Electrical:
Power windows, central locking system, mirror adjustments, wiper/washer system, horn
Climate Control:
HVAC system diagnosis, blower motor, A/C compressor, refrigerant service, heater control valve
Scheduled Maintenance:
Oil change intervals, filter replacement, spark plug replacement, fluid checks and changes, timing belt inspection/replacement (if applicable)
Troubleshooting:
Diagnostic charts, symptom-based troubleshooting guides, electrical fault finding, component testing
Repair And Rebuild:
Step-by-step instructions for component removal, repair, and reinstallation for all major systems
Rebuilding Engine:
Engine disassembly, cylinder head rebuild, piston and connecting rod installation, crankshaft bearing replacement, torque specifications
Rebuilding Transmission:
Gearbox disassembly, gear inspection, seal replacement, clutch pack servicing (automatic)
Body And Interior:
Door panel removal, seat adjustment/replacement, trim piece installation, panel alignment
Wheel Alignment:
Front and rear alignment specifications, camber, caster, toe adjustment procedures
Wheel Balance And Tire:
Tire rotation, balancing procedures, tire pressure recommendations
Diagnostic Capabilities:
Detailed diagnostic procedures, likely including specific test equipment usage and fault code interpretation (though OBD-I was nascent)
Electrical Diagrams:
Comprehensive wiring diagrams for all electrical systems, including component locations and wire colors
Torque Specifications:
Critical torque values for all fasteners, ensuring proper assembly and prevent damage
Special Tools:
Identification and usage of specialized BMW tools required for specific repairs
Oil Change Interval:
Every 5,000 - 7,500 miles (8,000 - 12,000 km) or 6-12 months, whichever comes first
Air Filter Replacement:
Every 15,000 - 30,000 miles (24,000 - 48,000 km) or as needed based on driving conditions
Spark Plug Replacement:
Every 30,000 miles (48,000 km), using recommended plugs (e.g., Bosch W7DC or equivalent)
Coolant Flush:
Every 24,000 miles (38,000 km) or 2 years
Engine Oil Type:
API SG/CD, SAE 20W-50 or 10W-40 (depending on climate), capacity approx. 5.5 Liters (5.8 US Quarts) with filter
Coolant Type:
Ethylene glycol based antifreeze, 50/50 mix with distilled water
Brake Fluid Type:
DOT 3 or DOT 4
Power Steering Fluid:
Dexron III/MERCON or ZF LifeguardFluid (check manual for specific recommendation)
Rust Prone Areas:
Wheel arches, rocker panels, rear valence, strut towers, battery tray
Engine Management Issues:
Issues with L-Jetronic fuel injection system (e.g., airflow meter, cold start valve, injector failures), vacuum leaks
Cooling System Failures:
Plastic radiator end tanks can crack, water pump seal leaks, thermostat housing leaks
Suspension Wear:
Worn control arm bushings, tie rod ends, and ball joints are common due to age and mileage
Electrical System Aging:
Degradation of wiring insulation, corrosion in connectors, failing relays and switches
Transmission Slippage:
Common with automatic transmissions if fluid and filter are not regularly changed, or internal wear