Engine Mechanical:
Detailed overhaul procedures for the M43B18 engine, including cylinder head, pistons, crankshaft, camshaft, timing system, oil pump, and lubrication system.
Engine Management:
Diagnosis and repair of the Motronic 5.2 engine control unit, fuel injection system (Bosch Motronic M5.2), ignition system, and emission control systems.
Cooling System:
Service and repair of the radiator, water pump, thermostat, coolant hoses, and fan system.
Fuel System:
Maintenance and repair of the fuel tank, fuel pump, fuel filter, fuel lines, and fuel pressure regulator.
Exhaust System:
Inspection and repair of exhaust manifolds, catalytic converter, mufflers, and exhaust pipes.
Transmission Manual:
Service and overhaul of the Getrag 250G 5-speed manual transmission, including clutch, gear selection, and lubrication.
Transmission Automatic:
Service and repair of the ZF 4HP18 automatic transmission (if applicable), including valve body, torque converter, and fluid changes.
Drivetrain:
Repair and maintenance of the driveshaft, universal joints, differential, and drive axles.
Brakes Hydraulic:
Service of brake master cylinder, brake lines, brake fluid, and bleeding procedures.
Brakes Friction:
Replacement of front and rear brake pads and rotors, caliper service, and parking brake adjustments.
ABS:
Diagnosis and repair of the Bosch ABS 2S system, including wheel speed sensors, hydraulic unit, and control module.
Suspension Front:
Service of MacPherson struts, control arms, ball joints, sway bar links, and wheel bearings.
Suspension Rear:
Repair and replacement of trailing arms, shock absorbers, springs, and bushings.
Steering System:
Service of the recirculating ball steering gearbox, power steering pump, hoses, and fluid.
Wheel Alignment:
Specifications and procedures for front and rear wheel alignment.
Lighting System:
Troubleshooting and repair of headlights, taillights, turn signals, and interior lighting.
Instrument Panel:
Diagnosis and repair of gauges, warning lights, and indicator systems.
Wiper Washer System:
Service of wiper motor, linkages, blades, and washer fluid reservoir and pump.
Power Windows Locks:
Troubleshooting and repair of power window regulators, motors, and central locking systems.
HVAC System:
Service of the heating and air conditioning system, including refrigerant charging, compressor, evaporator, and blower motor.
Body Panels:
Information on door panel removal, trunk lid service, and hood adjustments.
Interior Trim:
Procedures for removing and installing seats, dashboard trim, and headliner.
Body Electrical:
Wiring diagrams for various body electrical components.
Scheduled Maintenance:
Detailed service intervals and recommended maintenance tasks for oil changes, filter replacements, fluid checks, and inspections.
Diagnostic Troubleshooting:
Systematic troubleshooting guides for common and complex issues, including symptom analysis and diagnostic flowcharts.
Engine Rebuilding:
Step-by-step instructions for complete engine disassembly, inspection, component replacement, and reassembly with torque specifications.
Transmission Overhaul:
Comprehensive procedures for manual and automatic transmission disassembly, component replacement, and reassembly.
Brake System Repair:
Instructions for brake pad and rotor replacement, caliper service, brake line replacement, and ABS system diagnostics.
Suspension Component Replacement:
Guides for replacing struts, shocks, control arms, ball joints, and bushings.
Electrical Component Testing:
Procedures for testing sensors, actuators, relays, and control modules using multimeters and diagnostic tools.
HVAC System Diagnosis:
Troubleshooting and repair of cooling and heating issues, including refrigerant handling and leak detection.
Body Panel Adjustment:
Guidance on adjusting doors, hood, and trunk for proper fit and sealing.
Technical Depth:
Comprehensive, from basic maintenance and fluid checks to in-depth engine and transmission overhauls, electrical system diagnostics, and bodywork repairs.
Diagnostic Tools:
References diagnostic trouble codes (DTCs) and often implies the use of BMW-specific diagnostic equipment (e.g., GT1, DIS) for advanced troubleshooting.
Torque Specifications:
Provides detailed torque specifications for all critical fasteners in engine, chassis, and body assemblies.
Wiring Diagrams:
Includes detailed electrical wiring diagrams for all major vehicle systems.
Component Diagrams:
Features exploded views and diagrams of major components for easy identification and assembly/disassembly guidance.
Oil Change Interval:
Typically 7,500 to 10,000 miles or 12 months, using synthetic oil. Refer to the manual for exact BMW recommendations.
Air Filter Replacement:
Recommended every 15,000 to 30,000 miles or as needed based on driving conditions.
Spark Plug Replacement:
Typically every 60,000 miles for standard spark plugs, or longer for premium/iridium plugs.
Coolant Flush:
Recommended every 2 years or 30,000 miles.
Brake Fluid Flush:
Recommended every 2 years or 30,000 miles due to hygroscopic nature.
Engine Oil Type:
BMW Longlife-98 (LL-98) or equivalent, typically 5W-30 or 5W-40 synthetic.
Engine Oil Capacity:
Approx. 4.0 liters (4.2 US quarts) with filter change.
Coolant Type:
BMW Blue/Green coolant concentrate mixed with distilled water (50/50 ratio).
Known Issues:
Common issues can include VANOS (Variable Valve Timing) unit failure (though less common on the M43 than M50/M52), coolant expansion tank leaks, oil pan gasket leaks, rear subframe mounting point cracks (reinforcement recommended), ABS sensor failures, and window regulator failures.