🏷️ Basic Information

Make:

BMW

Model:

328i

Generation Code:

E30

Product Name:

BMW 328i E30 Workshop Manual 1987 1988 1989 1990 1991

Engine Code Typical:

M20B27 (for later models, specific to 328i in some markets or configurations, though 325i with M20B25 was more common in many primary markets like North America for this chassis generation. Clarification on specific 328i E30 designation is important, often this refers to a high-performance variant or specific market export model. Assuming a 2.7L engine for '328i' designation in this context, potentially related to the eta engine variants but with specific tuning).

👋 Introduction

E30 Segment:

Compact executive sports sedan/coupe, renowned for its driving dynamics and build quality.

Target Audience:

Enthusiasts and owners of the E30 generation seeking to perform maintenance and repairs, from routine servicing to in-depth overhauls.

Contemporary Rivals:

Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra XR4i, Opel Monza/Senator.

E30 Highlights:

Excellent handling, robust engineering, iconic BMW styling, driver-focused cockpit.

Manual Advantage:

Provides the necessary technical information to maintain and repair the E30 at a professional level, saving significant costs and ensuring proper vehicle upkeep.

📋 Manual Details

General Coverage:

All models and repairs A-Z.

Mechanical Coverage:

Comprehensive, including engine, transmission, drivetrain, suspension, steering, brakes, fuel system, exhaust.

Electrical Coverage:

Comprehensive, including wiring diagrams, component testing, diagnostic procedures.

Estimated Page Count:

Detailed, comprehensive (exact count not specified but implied to be extensive).

Manual Type:

Workshop Service Repair Manual.

Language:

English (implied by product description and common market for BMW manuals).

Format:

Printable pages (digital format implied, likely PDF).

📖 Manual Coverage

Engine Systems:

Engine mechanicals (cylinder head, block, pistons, crankshaft, camshaft), lubrication system, cooling system, fuel injection (Bosch Motronic), ignition system, emissions control.

Transmission Drivetrain:

Manual and automatic transmission service, clutch, driveshafts, differential, axle shafts.

Suspension Steering:

Front and rear suspension components (struts, control arms, bushings, springs, shocks), steering gear, power steering system.

Brake System:

Front and rear brakes (discs, calipers, pads), parking brake, ABS system (if equipped), brake fluid, bleeding procedures.

Electrical System:

Battery, charging system (alternator), starting system, lighting, instrumentation, power accessories, fuse box, relay locations, diagnostic troubleshooting using wiring diagrams.

Body Chassis:

Body panel removal/installation, interior trim, glass, convertible top (if applicable), chassis components, jacking points.

Routine Maintenance:

Oil changes, filter replacements, spark plug replacement, air filter replacement, fluid checks and top-offs, belt inspections and replacement.

Repair Procedures:

Engine overhaul, transmission rebuild, brake caliper replacement, strut replacement, fuel injector service, exhaust system repair, starter motor replacement.

Diagnostics Troubleshooting:

Fault code retrieval (where applicable to the era), symptom-based troubleshooting guides, component testing procedures, electrical circuit analysis.

Special Tools:

Identification of specific BMW special tools required for certain procedures.

Depth Of Information:

Comprehensive, suitable for professional technicians and advanced DIY enthusiasts. Covers both basic maintenance and complex overhaul procedures.

Visual Aids:

Tons of detailed pictures and diagrams, crucial for understanding complex assemblies and procedures.

📊 Manual Specifications

Digital Format:

Likely PDF, allowing for searchability and selective printing.

Printability:

All pages are printable, enabling users to print specific sections or the entire manual for workshop use.

Physical Binding:

N/A (as provided digitally, but professional manuals are typically spiral-bound or hardbound for durability).

Physical Paper:

N/A (digital, but original manuals often used durable, glossy paper for diagrams).

⚙️ Engine Specifications

Engine Type:

Inline 6-cylinder, DOHC (Double Overhead Camshaft).

Engine Displacement Typical For 328I E30:

While the 325i (M20B25) was more common in many markets, a '328i' E30 designation often implies a larger displacement, potentially a 2.7L variant like the M20B27 'eta' engine adapted for higher performance, or a specific market variant. If referring to a 328i badge on an E30, it's likely a 2.7L engine tuned for performance, producing around 170-180 HP, or an import/modified version. For the purpose of this manual, it's crucial to cover the M20 engine family prevalent in the E30 chassis, particularly the 2.5L (M20B25) and potentially the 2.7L (M20B27) variants as found in models like the 325e/325i. Assuming the manual covers the relevant engine(s) for the specified years and the '328i' designation implies a variant of the M20 6-cylinder.

Horsepower Estimated:

Approximately 170-180 hp (for a performance-oriented 2.7L '328i' variant).

Torque Estimated:

Around 210-230 lb-ft (for a performance-oriented 2.7L '328i' variant).

Fuel Delivery:

Bosch L-Jetronic or Motronic fuel injection (sequential or multi-point).

Fuel Type:

Unleaded premium gasoline.

Ignition Type:

Electronic ignition (distributor-based or distributorless in later variants).

🔧 Transmission

Transmission Type Standard:

Getrag 260 5-speed manual transmission.

Transmission Type Optional:

ZF 4HP-22 4-speed automatic transmission.

Clutch Type:

Hydraulically operated single dry plate clutch.

Differential:

Limited-slip differential (LSD) often optional or standard on performance variants.

📐 Dimensions

Body Styles Available E30:

2-door sedan, 4-door sedan, convertible, sport utility coupe (e.g., M3).

Wheelbase E30:

Approx. 104.3 inches (2649 mm).

Track Width Front E30:

Approx. 55.2 inches (1402 mm).

Track Width Rear E30:

Approx. 56.1 inches (1425 mm).

Curb Weight Estimated:

Approx. 2,900 - 3,200 lbs (1315 - 1451 kg), depending on body style and options.

🛡️ Safety Features

Crash Test Ratings Era:

Modern safety standards were evolving. E30s are known for their robust unibody construction. Specific NHTSA/IIHS ratings from the period are less comprehensive than today.

ABS:

Anti-lock Braking System (ABS) was an optional feature on most E30 models.

Airbags:

Driver-side airbag became available on later E30 models, particularly post-1987/1988 facelifts. Passenger airbags were generally not offered on the E30 chassis.

Seatbelts:

Three-point inertia-reel seatbelts for front and rear occupants.

💡 Technology Features

Audio System:

Factory-installed cassette or radio/cassette systems from brands like Blaupunkt or BMW Bavaria. Often feature analog tuning and basic EQ controls.

Cruise Control:

Optional feature on many models, operated via a stalk on the steering column.

Connectivity Features:

Limited by era; primarily focused on interior comfort and driver feedback. No modern Bluetooth or USB connectivity from the factory.

🔧 Maintenance

Oil Change Interval:

Typically every 5,000 - 7,500 miles (8,000 - 12,000 km) or annually, whichever comes first, depending on driving conditions.

Timing Belt Replacement:

The M20 engine uses a timing belt. Replacement interval is typically every 40,000 - 60,000 miles (64,000 - 96,000 km) or 4-5 years. This manual will provide exact procedures and torque specifications.

Spark Plug Replacement:

Every 20,000 - 30,000 miles (32,000 - 48,000 km), depending on plug type.

Engine Oil Type:

Synthetic or semi-synthetic 5W-30, 5W-40, or 10W-40, meeting BMW LL-98 or equivalent specifications (refer to manual for exact OEM spec).

Coolant Type:

Ethylene glycol based antifreeze, typically a 50/50 mix with distilled water. BMW coolant (G48 or similar).

Brake Fluid Type:

DOT 4 low-viscosity brake fluid.

Transmission Fluid Manual:

API GL-4 or GL-5 gear oil, SAE 75W-90 or 80W-90.

Transmission Fluid Automatic:

Dexron III / Mercon ATF (Automatic Transmission Fluid) or equivalent spec (e.g., ZF LifeguardFluid T-IV).

Differential Fluid:

API GL-5 gear oil, SAE 75W-90 or 80W-90. For LSD, specific LSD additive may be required or a proprietary LSD fluid.

Common E30 Issues Requiring Manual:

Cooling system leaks (radiator, hoses, water pump), fuel pump failure, fuel injector leaks, idle control valve issues, vacuum leaks, rear axle carrier cracking, window regulator failures, door panel sag, rust (especially wheel arches, sills, sunroof area), dashboard illumination failure.

📚 Vehicle History

Bmw Philosophy:

BMW's long-standing reputation for building driver-focused, well-engineered automobiles with a focus on performance and handling.

E30 Introduction:

The E30 3 Series generation was introduced in 1982, replacing the E21. It was produced until 1991 (for sedans/coupes) and 1993 (for convertibles).

E30 Facelift:

The E30 received a significant facelift in late 1987 (often referred to as 'late model' or 'Series II'), introducing revised bumpers (plastic 'iS' style), updated interiors, and revised lighting.

Production Years Covered:

1987, 1988, 1989, 1990, 1991.

Manufacturing Locations:

Primary manufacturing in Germany (Munich, Dingolfing), with some assembly in other locations like South Africa.

🏆 Awards & Recognition

E30 Reputation:

The E30 chassis, particularly the 325i and M3 variants, is widely regarded as one of the best driving cars of its era and has a cult following among automotive enthusiasts. Consistently praised for handling and build quality.

Performance Comparisons:

Often benchmarked against contemporary sports sedans and coupes, frequently outperforming rivals in track tests and driver engagement metrics.