Engine Mechanical:
Engine overhaul, cylinder head, block, pistons, crankshaft, camshaft, timing.
Engine Control System:
Engine management, EFI (Electronic Fuel Injection) diagnosis and repair, sensors, actuators.
Fuel System:
Fuel pump, injectors, fuel lines, fuel tank, fuel pressure regulator, service specifications.
Emission Control:
Catalytic converter, EGR (Exhaust Gas Recirculation), evaporative emission control system.
Cooling System:
Radiator, water pump, thermostat, coolant, hoses, fan.
Lubrication System:
Oil pump, oil filter, oil pan, oil specifications, oil pressure.
Ignition Starting Charging:
Spark plugs, ignition coils, distributor (if applicable), starter motor, alternator, battery.
Automatic Transmission:
Service, repair, fluid specifications, torque converter, solenoids.
Manual Transmission:
Clutch, gearbox, shifter linkage, repair procedures.
Drivetrain:
Driveshaft, universal joints, differential, axle shafts, wheel bearings.
Suspension:
Front and rear suspension components, shock absorbers, springs, control arms, bushings.
Steering:
Steering column, steering rack, power steering pump, hydraulic lines, alignment.
Brakes:
Brake system components (calipers, rotors, pads, lines), ABS (Anti-lock Braking System), parking brake.
Wheels Tires:
Tire sizes, wheel specifications, bolt patterns, pressure recommendations.
Climate Control:
Air conditioning system service, heater core, blower motor, controls.
Restraint Systems:
Seat belts, Supplemental Restraint System (SRS) components (airbags if equipped), pre-tensioners.
Electrical System:
Wiring diagrams, lighting, fuses, relays, battery system, charging system.
Body Interior:
Door locks, windows, mirrors, windshield, instrument panel, seats, engine hood, exterior and interior trim.
Instrumentation Audio:
Gauges, warning lights, meter cluster, audio system, visual systems.
Cruise Control:
Operation, diagnosis, and repair of the cruise control system.
Wiper Washer:
Wiper motor, linkages, washer pump, fluid reservoir.
Multiplex Can Communication:
Diagnosis and understanding of multiplexed or CAN communication systems (relevant for later E24 models or specific ECUs).
Engine Immobilizer:
Information on the operation and potential troubleshooting of engine immobilizer systems, if equipped.
Seat Belt Restraint:
Detailed instructions on seat belt maintenance, adjustment, and replacement.
Maintenance:
Scheduled maintenance, fluid changes, filter replacements, inspections.
Troubleshooting:
Diagnostic procedures for common problems and system malfunctions.
Repair Rebuild:
Step-by-step instructions for component removal, repair, and reinstallation.
Diagnostics:
Fault code interpretation, circuit testing, component testing.
Engine Performance Tuning:
Details on fuel and ignition timing adjustments, component upgrades for performance enhancement.
Depth:
Comprehensive: Covers basic maintenance to major component overhauls and diagnostics.
Detail Level:
Includes torque specifications, clearances, and detailed assembly/disassembly instructions.
Diagnostic Charts:
Inclusion of troubleshooting flowcharts and symptom-based diagnostic guides.
Oil Change:
Every 5,000-7,500 miles or annually, whichever comes first.
Major Service:
15,000-30,000 miles for spark plug replacement, belt inspections, fluid flushes.
Engine Oil:
API SG, SAE 15W-40 or 20W-50 (check owner's manual for specific climate recommendations).
Coolant:
BMW Blue Antifreeze/Coolant (50/50 mix with distilled water).
Automatic Transmission Fluid:
Dexron III (or equivalent specification for ZF 4HP22).
Manual Transmission Fluid:
GL-4 or GL-5 gear oil, SAE 75W-90.
Common Problems:
Cooling system leaks (hoses, radiator), fuel distributor issues (L-Jetronic), aging wiring harnesses, suspension bushings wear, idle control valve issues.
Corrosion:
Prone to rust in common areas like wheel arches, rocker panels, and sunroof drains.
