Engine Mechanical:
Complete overhaul procedures, component identification, timing belt/chain inspection and replacement, piston and connecting rod service, crankshaft and bearing service, cylinder head assembly, valve train service, oil pump, lubrication system.
Engine Management And Fuel:
Fuel injection system (Bosch Motronic variants), fuel pump and filter replacement, injectors, throttle body, intake manifold, exhaust system, emission control systems (catalytic converter, O2 sensors, EGR), engine control unit (ECU) diagnostics, sensor identification and testing (MAF, MAP, TPS, CTS, Knock sensor).
Transmission Manual:
Clutch assembly inspection and replacement, gearshift linkage adjustment, transmission fluid service, internal transmission component inspection and repair, bearing replacement, seal replacement, troubleshooting.
Transmission Automatic:
Transmission fluid and filter change, torque converter inspection, valve body diagnostics, electronic control unit (TCU) interaction, shift solenoid testing, seal and gasket replacement, troubleshooting and repair procedures.
Drivetrain:
Rear differential service (fluid change, seal replacement), driveshaft U-joints, CV joints, wheel hub bearing replacement, axle shaft service.
Suspension:
Front strut and shock absorber replacement, coil spring service, control arm bushing replacement, ball joint inspection and replacement, sway bar and links, rear shock absorber and spring replacement, trailing arm bushings, wheel bearing replacement, alignment specifications.
Steering:
Power steering system service (fluid, pump, rack and pinion, hoses), steering column adjustment and repair, tie rod end replacement, steering angle sensor (if applicable).
Brakes:
Front and rear brake pad and rotor replacement, caliper service and rebuild, brake fluid flush and bleeding procedures, ABS system diagnostics and component testing (wheel speed sensors, ABS module), brake line and hose replacement, parking brake adjustment.
Electrical System:
Battery service, starter motor, alternator, ignition system (coils, spark plugs), wiring diagrams for all circuits, fuse and relay identification and testing, lighting systems (headlights, taillights, interior), horn, wipers, power windows, door locks, central locking system.
Climate Control:
Air conditioning system service (refrigerant, compressor, condenser, evaporator), heater core replacement, blower motor, climate control module diagnostics, cabin air filter replacement.
Body And Interior:
Door panel removal, seat removal and repair, dashboard disassembly, interior trim component replacement, exterior panel removal and installation (fenders, hood, trunk lid), bumper service, glass replacement, sunroof operation and repair.
Scheduled Maintenance:
Detailed guide on routine maintenance tasks, including oil changes, filter replacements, fluid checks, tire rotation, spark plug replacement, and accessory belt inspection/replacement with recommended intervals.
Troubleshooting:
Systematic diagnostic procedures for common and uncommon faults, including symptom-based troubleshooting charts, electrical diagnostic flowcharts, and fault code interpretation (OBD-I or proprietary codes for the era).
Repair Procedures:
Step-by-step instructions with diagrams for virtually all repair tasks, from simple component replacements to complex sub-assembly overhauls and engine rebuilds.
Diagnostics:
Guidance on using diagnostic tools (where applicable for the era), interpreting sensor data, and performing voltage and resistance tests on various electrical components.
Technical Specifications Reference:
Torque specifications for all fasteners, fluid capacities, engine timing marks, diagnostic trouble codes (DTCs), electrical component resistance values, and alignment data.
Depth:
Comprehensive, covering all aspects from basic maintenance to complete engine, transmission, and chassis overhauls. Suitable for professional technicians and advanced DIY enthusiasts.
Oil Change:
BMW's 'Condition Based Service' (CBS) system would indicate intervals, but generally around 10,000-15,000 miles or annually.
Spark Plugs:
Typically every 60,000 miles (depending on plug type, e.g., platinum).
Coolant Flush:
Every 2-3 years or 30,000-45,000 miles.
Transmission Fluid:
Manual: Check level and condition periodically. Automatic: Replace fluid and filter every 50,000-60,000 miles (BMW recommended changing it, though often considered 'lifetime' by some mechanics of the era).
Engine Oil:
SAE 5W-30 or 5W-40 Synthetic (API SJ/CF or higher), BMW Longlife-98 specification often applies. Check manual for exact specs.
Coolant:
BMW Blue (G48) Antifreeze/Coolant or equivalent (50/50 mix with distilled water).
Brake Fluid:
DOT 4 (low viscosity recommended by BMW for ABS systems).
Power Steering Fluid:
ATF Dexron II/III or CHF 11S (check specific model requirements as BMW sometimes used different types).
Cooling System:
Plastic coolant expansion tank can become brittle and crack; water pump failure. Regular inspection is key.
Suspension Bushings:
Front control arm bushings and rear trailing arm bushings can wear out, leading to vague steering and handling.
Window Regulators:
Plastic guides in the window regulator mechanisms are prone to breaking.
Vanos:
While the M43 is not equipped with VANOS, its sibling M42/M44 engines were, and VANOS unit failures are a common E36 issue.
Heater Valve:
Heater control valves can fail, leading to no heat or stuck heat.
Oil Leaks:
Valve cover gasket and oil pan gasket are common sources of leaks over time.