Segment:
Compact Executive Sedan/Coupe
Key Competitors:
Mercedes-Benz W201 (190E), Audi 80/90, Alfa Romeo 75
Design Philosophy:
Driver-focused, balanced chassis, high-quality engineering
Driving Dynamics:
Renowned for balanced weight distribution, responsive steering, and a connected driving experience.
Main Coverage:
Workshop repair and maintenance procedures
Specific Topics:
Engine, fuel system, transmission, suspension, brakes, electrical systems, bodywork, troubleshooting
Electrical Diagrams:
Included, essential for electrical system troubleshooting and repairs.
Estimated Page Count:
Varies based on specific edition, typically several hundred pages
Type:
Service and Repair Manual
Format:
PDF (Digital Download)
Engine Mechanical:
Engine removal/installation, cylinder head, valves, pistons, crankshaft, crankcase, lubrication, inspection and adjustment
Fuel System:
Fuel injection system, fuel pump, injectors, fuel lines, fuel tank
Transmission:
Clutch, gearshift linkage, sub-transmission, transmission overhaul, crankshaft/primary shaft
Suspension Steering:
Front wheel and suspension, rear wheel and suspension, steering components
Brakes:
Hydraulic brake system, components, servicing, bleeding
Electrical System:
Battery and charging system, ignition system, electric starter, switches, wiring diagrams
Bodywork:
Body repair, panel replacement, rust prevention, trim removal/installation
Exhaust System:
Exhaust manifold, catalytic converter, mufflers, pipes
Cooling System:
Radiator, water pump, thermostat, hoses, fan
Climate Control:
HVAC system components, operation, and basic troubleshooting.
Maintenance:
Routine maintenance checks, fluid changes, filter replacements
Repair:
Component overhaul, system rebuilding, part replacement
Diagnostics:
Troubleshooting guides, symptom identification, diagnostic procedures
Electrical Diagnostics:
Wiring diagrams, troubleshooting electrical faults, component testing
Performance Tuning:
May include basic tuning adjustments for fuel and ignition systems.
Level:
Comprehensive workshop level, covering from basic adjustments to complete engine and transmission rebuilds
Specific Rebuilds:
Detailed procedures for engine component rebuilds (pistons, rings, bearings, valves), transmission overhauls, differential rebuilds
Diagnostic Tools:
While not explicit, the manual would guide users on diagnostic procedures potentially using basic tools like multimeters and pressure gauges common for the era.
Engine Code Range:
M20 series (e.g., M20B27 variations for '87-'91 E30 328i equivalent models, though '328i' designation was less common in US for E30. Likely referring to 325i or 325e variants adapted).
Displacement:
Typically 2.7L or 2.5L for the relevant E30 models from this era.
Horsepower Range:
Approx. 121-168 hp depending on specific engine variant (e.g., 325i).
Torque Range:
Approx. 170-220 Nm (125-162 lb-ft) depending on specific engine variant.
Injection Type:
Bosch Motronic electronic fuel injection
Note On 328I:
In North America, the E30 models were primarily 318i, 325e, 325i, and M3. The '328i' designation was not common for the E30 chassis. This manual likely covers models equivalent to a 328i's performance level within the E30 range, such as the 325i or modified variants.
Oil Change Interval:
Typically every 7,500-10,000 miles (12,000-16,000 km) or 12 months, depending on driving conditions and oil used.
Timing Belt Replacement:
M20 engines are interference engines; timing belt replacement recommended every 30,000-60,000 miles (48,000-96,000 km) or 4-5 years.
Engine Oil:
API SG/SH rated, viscosity typically 15W-40 or 20W-50. Consult manual for precise grade based on climate.
Coolant:
BMW Blue Antifreeze/Coolant (G48) or equivalent silicate-free ethylene glycol-based coolant, mixed 50/50 with distilled water.
Transmission Fluid Manual:
GL-4 rated gear oil, typically SAE 75W-90 or 80W-90.
Transmission Fluid Automatic:
Dexron III (or equivalent) automatic transmission fluid.
Brake Fluid:
DOT 4 or DOT 4 Plus brake fluid.
Differential Fluid:
API GL-5 rated gear oil, SAE 75W-90 or 80W-90.
Power Steering Fluid:
ATF (Automatic Transmission Fluid) or specific BMW power steering fluid.
Common Problems:
Fuel distributor issues (L-Jetronic), cooling system leaks (radiator, hoses, water pump), front strut tower rust/cracking, vacuum leaks, deteriorating rubber bushings, OBC (On-Board Computer) malfunctions.
Heritage Context:
BMW is renowned for its 'Ultimate Driving Machine' slogan, emphasizing performance and engineering.
E30 Significance:
The E30 is considered one of BMW's most iconic and influential models, known for its excellent handling and build quality. It solidified BMW's reputation in the compact executive segment.
E30 Legacy:
The E30 established BMW as a leader in driver-oriented luxury compact cars and remains a sought-after classic.
Production Years:
1982-1994 (Global E30 production)
