🏷️ Basic Information

Make:

BMW

Model:

328i

Generation:

E30

Product Name:

BMW 328I E30 Service Repair Manual 1987-1991

👋 Introduction

Positioning:

The BMW E30 3 Series, particularly models like the 328i, was positioned as a premium compact executive sports sedan and coupe, renowned for its driving dynamics, build quality, and sporty aesthetics. This manual caters to owners and independent workshops seeking to maintain and repair these classic vehicles.

Competitors:

Competed against vehicles like the Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, and various Japanese luxury sedans of the era. The E30 was often praised for its superior handling and driver engagement.

Manual Value Proposition:

Empowers users to perform repairs and maintenance themselves or with confidence, saving on labor costs and ensuring proper upkeep of a valuable classic car.

Vehicle Appeal:

The E30 328i represents a highly sought-after model in the classic BMW lineup, offering a blend of performance and classic styling, making a comprehensive service manual essential for preservation.

📋 Manual Details

Vehicle Years Covered:

1987, 1988, 1989, 1990, 1991

Specific Models Covered:

BMW 328i (E30 chassis)

Estimated Pages:

Comprehensive (exact number not provided, but described as highly detailed for every service and repair job)

Type:

Service Repair Workshop Manual

Language:

English

Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Complete engine overhaul, cylinder head, block assembly, pistons, connecting rods, crankshaft, camshafts, timing system, lubrication system, cooling system.

Engine Management:

Fuel injection system (Motronic), ignition system, sensors, actuators, electronic control unit (ECU) diagnostics and troubleshooting.

Transmission Manual:

Clutch system, gearbox overhaul, shift mechanisms, gear ratios, torque specifications.

Transmission Automatic:

Automatic transmission operation, hydraulic control, torque converter, valve body, cooling system, electronic control unit (if applicable).

Drivetrain:

Driveshafts, universal joints, differential, rear axle assembly, wheel bearings.

Suspension:

Front suspension (MacPherson struts, control arms, anti-roll bar), rear suspension (semi-trailing arms, shock absorbers, springs), bushings, alignment specifications.

Steering:

Steering rack, power steering system (pump, hoses, fluid), steering column, tie rods.

Brakes:

Front and rear brake systems (disc brakes), brake calipers, rotors, pads, master cylinder, brake booster, ABS system (if equipped), bleeding procedures.

Electrical System:

Battery, charging system (alternator, voltage regulator), starting system (starter motor), lighting system (headlights, taillights, interior lights), fuses, relays, wiring diagrams, diagnostic connectors.

Body And Chassis:

Body panels, doors, hood, trunk, interior trim, chassis components, rust prevention, repair procedures.

HVAC:

Heating, ventilation, and air conditioning system components, refrigerant charging, troubleshooting.

Fuel System:

Fuel tank, fuel pump, fuel lines, fuel filter, fuel pressure regulator, injectors.

Exhaust System:

Exhaust manifolds, catalytic converter, mufflers, pipes, hangers.

Instrument Cluster:

Operation, diagnosis, and repair of gauges, warning lights, and onboard computer functions (if equipped).

Maintenance:

Routine maintenance checks, oil changes, filter replacements, fluid top-ups, spark plug replacement, belt inspection/replacement.

Troubleshooting:

Diagnostic procedures for common problems, symptom-based troubleshooting guides, fault code interpretation.

Repair:

Step-by-step repair instructions for all major components and systems, including disassembly, reassembly, and adjustment.

Specifications:

Torque specifications, engine timing, valve clearances, fluid capacities, electrical resistance values, alignment settings.

Wiring Diagrams:

Detailed electrical wiring diagrams for all vehicle systems, including component identification and wire routing.

Diagnostic Tools:

Information on using diagnostic tools and interpreting their outputs for engine management and other electronic systems.

Engine Tuning:

Information on idle speed adjustment, ignition timing, and fuel mixture settings where applicable.

Depth:

Comprehensive, covering everything from basic routine maintenance to complete engine and transmission rebuilds, as well as advanced electrical diagnostics and body repair.

Diagnostic Troubleshooting Charts:

Likely includes detailed diagnostic charts for electrical and mechanical issues, aiding in rapid problem identification.

📊 Manual Specifications

Format:

PDF

Searchability:

Likely searchable text content, allowing for quick location of information.

Accessibility:

Downloadable PDF, allowing for easy access on computers, tablets, and smartphones.

Quality:

Professional quality, highly detailed.

Binding:

N/A (Digital PDF format)

Paper Type:

N/A (Digital PDF format)

⚙️ Engine Specifications

Engine Code:

M20B28 (Likely, though 328i designation was less common in North America for E30, potentially referring to a modified or export market variant. If a standard US 325i, it would be M20B25)

Displacement:

2.8 Liters (2788 cc) (Assuming this is a true 328i spec, otherwise it might be derived from a 2.5L M20B25)

Configuration:

Inline 6-cylinder, SOHC (Single Overhead Camshaft)

Horsepower:

Approximately 170-180 HP (Estimate for a 2.8L M20 variant, US market 325i was around 170 HP from 2.5L)

Torque:

Approximately 210-220 Nm (Estimate for a 2.8L M20 variant)

Injection System:

Bosch Motronic electronic fuel injection and ignition management

Fuel Type:

Unleaded gasoline (Premium recommended)

Recommended Viscosity:

10W-40 or 15W-50 (depending on climate), consult manual for precise OEM specification.

Oil Capacity:

Approximately 4.25 Liters (4.5 US Quarts) with filter, consult manual for exact capacity.

🔧 Transmission

Transmission Type:

Getrag 260 5-speed manual transmission (common for performance models)

Transmission Type:

ZF 4HP22 4-speed automatic transmission

Clutch Type:

Hydraulically operated single dry plate clutch

Manual Fluid Type:

GL-4 gear oil (e.g., SAE 75W-90 or 80W-90)

Automatic Fluid Type:

Dexron III (or equivalent ATF specification)

📐 Dimensions

Wheelbase:

Approx. 2565 mm (101 inches)

Length:

Approx. 4330 mm (170.5 inches)

Width:

Approx. 1675 mm (65.9 inches)

Height:

Approx. 1380 mm (54.3 inches)

Curb Weight:

Approx. 1250-1350 kg (2755-2976 lbs), depending on body style and options.

Wheel Bolt Pattern:

5x120 mm

Standard Tire Size:

205/55 R15 (Common for higher trims, check manual for specific fitment)

🛡️ Safety Features

Crash Test Performance:

Generally good for its era, though lacks modern safety features. E30 platform was designed with a strong safety cage. Specific ratings from the period are less standardized than today.

ABS:

Anti-lock Braking System (ABS) available as an option on many models, including potentially the 328i.

Airbags:

Driver's side airbag typically optional or standard on later models, passenger airbag rare for the E30 generation.

Seatbelts:

Three-point inertia-reel seatbelts front and rear.

💡 Technology Features

Radio:

Factory installed AM/FM cassette player, with options for premium sound systems.

Climate Control:

Manual or optional automatic climate control systems.

Cruise Control:

Available on many models.

Telematics:

No advanced telematics or smartphone integration typical of modern vehicles.

🔧 Maintenance

Oil Change:

Every 7,500 - 10,000 miles (12,000 - 16,000 km) or 12 months, depending on driving conditions and oil type used. Consult manual for exact intervals.

Spark Plugs:

Replace every 30,000 - 60,000 miles (48,000 - 96,000 km) depending on type (e.g., copper vs. platinum). Check manual.

Timing Belt:

M20 engines use a timing chain, not a belt. However, the chain tensioner and guides should be inspected periodically.

Coolant:

BMW Blue Antifreeze/Coolant or equivalent ethylene glycol-based coolant, mixed 50/50 with distilled water.

Brake Fluid:

DOT 4 brake fluid

Coolant Capacity:

Approx. 7.5 Liters (7.9 US Quarts)

Engine Mounts:

Wear and tear of engine and transmission mounts, leading to vibration and clunking noises.

Fuel Lines:

Degradation of rubber fuel lines due to age, potential for leaks.

Heater Core:

Leaking heater core, often leading to a sweet smell inside the cabin and fogged windows.

O2 Sensor:

Failure of the oxygen sensor can affect fuel economy and emissions.

Subframe Bushings:

Cracking and failure of the rear subframe mounting bushings, leading to poor handling and clunks.

📚 Vehicle History

Bmw Philosophy:

BMW's commitment to 'The Ultimate Driving Machine' is a core tenet exemplified by the E30 chassis, balancing performance, luxury, and sportiness.

E30 Generation:

The E30 generation, produced from 1982 to 1994 (globally), replaced the successful E21. It introduced more modern styling, improved aerodynamics, and a wider range of engines. The 328i designation was more common in European markets than North America for the E30. In North America, the M20B25 powered 325i was the flagship performance model during these years.

Variations:

Available as a 2-door sedan, 4-door sedan, convertible, and touring (wagon, not in North America). Iconic performance variants include the M3.

Production Years:

1982-1994 (E30 generation worldwide)

🏆 Awards & Recognition

E30 Reputation:

Consistently ranked as one of the best driver's cars of its era by automotive publications, praised for its handling, build quality, and timeless design.

Car And Driver 5 Best Cars:

The E30 3 Series was frequently featured on Car and Driver's 10Best lists during its production run, solidifying its status as a benchmark in its class.