Engine:
Yes, detailed diagnostics, repair, and overhaul of the M30B30 engine.
Fuel System:
Yes, including fuel injection (Bosch Motronic), fuel pump, injectors, and pressure regulation.
Ignition System:
Yes, covering ignition timing, coil, distributor (if applicable), spark plugs, and control module.
Cooling System:
Yes, radiator, water pump, thermostat, hoses, and fan clutch.
Exhaust System:
Yes, manifold, catalytic converter, mufflers, and O2 sensors.
Transmission Manual:
Yes, repair and overhaul of manual transmissions.
Transmission Automatic:
Yes, diagnostics and repair of automatic transmissions (e.g., ZF 4HP22).
Drivetrain:
Yes, driveshaft, differential, CV joints, and axles.
Suspension Front:
Yes, MacPherson struts, control arms, ball joints, bushings, and sway bar.
Suspension Rear:
Yes, multi-link independent suspension, shock absorbers, springs, and trailing arms.
Steering:
Yes, power steering system, rack and pinion, and steering column.
Brakes Front:
Yes, disc brakes, calipers, pads, rotors, and ABS system (if equipped).
Brakes Rear:
Yes, disc brakes, calipers, pads, rotors, and parking brake.
Electrical System Basic:
Yes, battery, charging system (alternator), starting system (starter motor).
Electrical System Lighting:
Yes, headlights, taillights, interior lights, and auxiliary lighting.
Electrical System Instruments:
Yes, dashboard instruments, gauges, and warning lights.
Body Exterior:
Yes, body panels, doors, hood, trunk, bumpers, and trim.
Body Interior:
Yes, seats, upholstery, dashboard, headliner, and trim panels.
HVAC:
Yes, heating, ventilation, air conditioning system components and operation.
Chassis Lubrication:
Yes, grease points and lubrication procedures.
Routine Maintenance:
Yes, oil changes, filter replacements, fluid checks, and belt inspections.
Troubleshooting:
Yes, diagnostic flowcharts and common problem identification.
Engine Repair:
Yes, complete engine rebuild, valve adjustments, head gasket replacement.
Transmission Repair:
Yes, clutch replacement, seal replacement, transmission overhaul.
Brake Service:
Yes, pad and rotor replacement, caliper overhaul, bleeding.
Suspension Work:
Yes, component replacement, alignment specifications.
Electrical Diagnostics:
Yes, wiring diagrams, component testing, circuit diagnosis.
Body Repair:
Yes, panel replacement, dent repair, glass replacement.
HVAC Service:
Yes, refrigerant handling, component replacement, leak testing.
Depth:
Comprehensive: Covers everything from basic maintenance to full engine and transmission rebuilds, including detailed diagnostics.
Oil Change:
Typically every 7,500-10,000 miles or annually, depending on driving conditions (refer to manual for specific BMW recommendations for 1989).
Spark Plugs:
Every 30,000-60,000 miles (check manual for specific plug type and interval).
Coolant Flush:
Every 2-3 years or as recommended in the manual.
Transmission Fluid Change:
Manual: Check for lifetime fill or periodic change. Automatic: Typically around 60,000 miles (refer to manual).
Engine Oil:
BMW Longlife-98 or equivalent SAE 10W-40 or 15W-40 (check manual for exact spec and viscosity based on climate).
Coolant:
BMW Blue or G48 Ethylene Glycol based coolant, mixed 50/50 with distilled water.
Power Steering Fluid:
ATF Dexron II or BMW CHF 11 S (check manual for exact spec).
Cooling System:
Water pump failures, thermostat issues, and plastic coolant reservoir cracks are common.
Engine M30:
Oil leaks from valve cover gasket and oil pan gasket, timing chain tensioner wear.
Suspension:
Worn control arm bushings, ball joints, and rear shock mounts.
Electrical:
Corrosion on connectors, failed window regulators, and dashboard warning light issues can occur.
Fuel System:
Clogged fuel injectors, failing fuel pumps, and faulty fuel pressure regulators.