Competitors:
Mercedes-Benz W126 S-Class, Audi V8 Quattro, Lexus LS 400 (later years)
Distinguishing Features:
Legendary M30 inline-six engine, sophisticated chassis dynamics, E32 platform's long wheelbase option (iL), emphasis on driver engagement.
Years Covered:
1988, 1989, 1990, 1991, 1992, 1993, 1994
Type:
Workshop Repair Service Manual
Powertrain:
Engine (M30B35), Fuel System, Ignition System, Cooling System, Exhaust System, Transmission (4HP22 EH Automatic)
Chassis:
Suspension (Front & Rear), Steering System, Brakes (ABS), Wheels & Tires
Electrical:
Wiring Diagrams, Lighting, Instrumentation, Power Distribution, Battery, Alternator, Starter, DME (Digital Motor Electronics), ABS Control Unit
Bodywork:
Exterior Body Panels, Doors, Hood, Trunk, Interior Trim, HVAC System
Maintenance:
Routine Service Intervals, Fluid Changes, Filter Replacements, Inspections
Troubleshooting:
Diagnostic Procedures, Symptom-Based Troubleshooting Guides, Fault Code Interpretation (DME/ABS)
Repair:
Component Removal and Installation, Overhaul Procedures, Adjustments, Calibration
Depth:
Comprehensive from basic maintenance to complete engine and transmission rebuilds, including detailed electrical diagnostics.
Configuration:
3.5L Inline-6, SOHC (Single Overhead Camshaft)
Horsepower:
Approximately 208 hp @ 5700 rpm (DIN)
Torque:
Approximately 225 lb-ft @ 4000 rpm (DIN)
System:
Bosch Motronic ML-SFI (Multi-Point Fuel Injection)
Recommended Fuel:
Premium Unleaded Gasoline (91+ Octane)
Spark Plug Type:
Bosch W8AC or equivalent (refer to manual for specific PN)
Type:
4-speed Automatic (ZF 4HP22 EH)
Type:
5-speed Manual (Getrag 265 - rarer option)
Automatic Control:
Electronic Hydraulic Control (EH) for smoother shifts and adaptive programming.
Automatic Fluid Type:
Dexron II (or equivalent specified by BMW, e.g., LT 71141 for later variants, confirm in manual)
Era Testing:
Early safety standards; specific official ratings (e.g., NHTSA/IIHS) for this era are often limited but reflected the safety advancements of the time.
ABS:
Standard Anti-lock Braking System (ABS)
Airbags:
Driver's airbag standard from 1990/1991 model year onwards, passenger airbag optional/later standard on some models.
Seatbelts:
Front and rear seat belts, pre-tensioners on front belts.
Audio System:
BMW Bavaria C Professional RDS (optional), cassette player, FM/AM radio, potentially with CD changer integration.
Cruise Control:
Standard electronic cruise control.
Telematics:
Limited to basic vehicle diagnostics and control, no integrated cellular or internet connectivity.
Climate Control:
Automatic climate control with dual-zone functionality on many models.
Oil Change Interval:
Typically 10,000-15,000 miles or 12-24 months, depending on driving conditions (refer to manual for specific interval).
Transmission Service:
Fluid and filter change recommended around 50,000-70,000 miles, or as specified by BMW.
Engine Oil Capacity:
Approximately 6.5 liters (6.9 US Quarts) with filter change.
Engine Oil Type:
API SG, ACEA A2-96 (e.g., 5W-30, 10W-40 depending on climate and specific BMW recommendation).
Coolant Type:
BMW Blue Coolant (Ethylene Glycol based, specific concentration, refer to manual for PN and mix ratio).
Common Problems:
Coolant leaks (hose degradation, water pump), Idle control valve issues, O2 sensor failure, ABS sensor/module faults, aging wiring harness (especially engine bay), valve cover gasket leaks, transmission cooler line leaks.
Oem Part Numbers:
Manual provides detailed OE part numbers for all components for accurate replacement.
