Engine Mechanical:
Full service, overhaul, diagnosis, tuning, timing belt/chain replacement, cylinder head, piston, crankshaft, camshaft service.
Engine Management Control System:
Diagnosis and repair of DME (Digital Motor Electronics), sensor testing (MAP, TPS, O2, Crank/Cam position), actuator testing (injectors, coils), idle control.
Fuel System:
Fuel pump testing, fuel injector service, fuel pressure regulation, fuel filter replacement, tank service.
Induction And Emission Control:
Air intake system diagnosis, catalytic converter information, EGR (if applicable), secondary air injection (if applicable), emission control system troubleshooting.
Transmission Manual:
Service and overhaul of manual transmissions, clutch replacement, gear linkage adjustment, torque specifications.
Transmission Automatic:
Diagnosis and service of automatic transmissions (e.g., ZF 4HP22), fluid changes, filter replacement, electronic control unit (TCU) diagnosis.
Differentials:
Service, fluid changes, and potential overhaul procedures for rear differentials.
Chassis And Body:
Body panel repair, rust prevention, door mechanism service, window regulators, convertible top mechanisms (if applicable), soundproofing.
Steering:
Power steering system diagnosis and repair, steering rack service, tie rod ends, steering linkage components.
Suspension:
Front and rear suspension service, shock absorber/strut replacement, control arm bushings, sway bar links, coil springs, spring strut replacement.
Brakes And ABS:
Brake pad and rotor replacement, caliper service, brake fluid flush, parking brake adjustment, ABS system diagnosis, wheel speed sensor testing, ABS hydraulic unit service.
Electrical System:
Full wiring diagrams, fuse box locations, relay functions, starter motor, alternator, battery service, lighting systems, interior electronics.
Routine Maintenance:
Oil and filter changes, air filter replacement, spark plug replacement, coolant flush, brake fluid service, transmission fluid service.
Troubleshooting Diagnostics:
Systematic diagnostic trees for common faults, symptom-based troubleshooting, using diagnostic tools (e.g., code readers for early OBD systems, multimeter testing).
Engine Repair:
Detailed procedures for engine rebuilds, head gasket replacement, timing component service, valve adjustments.
Transmission Repair:
Clutch replacement, internal transmission component service, torque converter replacement, transmission control system diagnostics.
Suspension Steering Repair:
Replacement of ball joints, control arm bushings, tie rods, steering rack, shock absorbers, struts.
Brake System Repair:
Caliper rebuild, master cylinder replacement, brake line replacement, ABS component replacement.
Electrical Diagnostics:
Tracing wiring faults, testing relays and solenoids, diagnosing ECU issues, repairing common electrical gremlins.
Bodywork And Trim:
Removal and installation of interior and exterior trim pieces, door panel removal, bumper service.
Depth:
Comprehensive, covering everything from basic maintenance to full engine and transmission overhauls. Designed for independent professionals and knowledgeable DIY enthusiasts.
Oil Change Interval:
Typically every 10,000-15,000 km or annually, depending on oil type and driving conditions. Check manual for specific recommendations.
Transmission Fluid Interval:
Manual: Check for leaks. Automatic: Typically every 40,000-60,000 km for fluid and filter change.
Engine Oil Type:
Consult manual for specific API/ACEA ratings and viscosity grades (e.g., 10W-40, 5W-30 depending on climate).
Coolant Type:
Ethylene glycol based coolant, typically blue or green. Check manual for BMW specific G48 type.
Common E34 Problems:
Cooling system issues (radiator, hoses, water pump), vacuum leaks, fuel injector seals, front control arm bushings wear, rear axle bushings, ignition coil failures, fuel pump reliability.
Electrical Gremlins:
Corrosion in wiring harnesses, faulty door lock actuators, intermittent dashboard lights, sunroof motor failure.
Engine M20 Specifics:
Timing belt replacement is critical (every ~60,000 km), valve cover gasket leaks, oil pan gasket leaks.
Availability:
The manual includes full specifications and torque settings for all major components, crucial for proper assembly and reliability.
