BMW E30 M3 1990 Service Repair Workshop Manual

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🏷️ Basic Information Identification Make: BMW Model: M3 Chassis Code: E30 Model Year: 1990 Codes Engine Code: S14B23 Internal Model Code: M3 Evolution III 👋 Introduction Market Position Vehicle Segment:...

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标签: 1990 BMW Car Cars E30 M3 Misc

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Description

🏷️ Basic Information

Identification

Make:

Model:

Chassis Code:

Model Year:

Codes

Engine Code:

S14B23

Internal Model Code:

M3 Evolution III

👋 Introduction

Market Position

Vehicle Segment:

Compact Executive Sports Coupe

Enthusiast Status:

Highly sought-after homologation special, iconic status

Competitive Analysis

Key Rivals:

Porsche 944, Ford Sierra RS Cosworth, Mercedes-Benz 190E 2.3-16

Key Features

Design Origin:

Touring car homologation special derived from the E30 3 Series platform

Aerodynamics:

Distinctive front air dam, rear spoiler, and side skirts

Chassis Enhancements:

Wider track, revised suspension geometry, M-specific chassis bracing

📋 Manual Details

Coverage Areas

Coverage Type:

Comprehensive Service, Repair, and Workshop

Page Count

Estimated Pages:

Manual Type

Type:

Workshop Manual / Service Manual

Language

Language:

English

Format

Format:

Digital (likely PDF)

📖 Manual Coverage

Systems Covered

Engine:

S14B23 2.3L Inline-4 DOHC 16-valve

Fuel System:

Bosch Motronic M1.3 Fuel Injection, Fuel Pump, Injectors, Pressure Regulator

Ignition System:

Electronic Ignition, Spark Plugs, Coils, Ignition Control Module

Cooling System:

Radiator, Fan, Water Pump, Thermostat, Hoses, Coolant Specifications

Exhaust System:

Exhaust Manifold, Catalytic Converter, Muffler, Oxygen Sensor

Transmission:

Getrag 265 5-speed Manual Transmission

Clutch:

Clutch Assembly, Flywheel, Master/Slave Cylinders, Hydraulic Lines

Drivetrain:

Driveshaft, Universal Joints, Rear Differential, Axles

Suspension:

Front McPherson Struts, Rear Independent Suspension, Control Arms, Bushings, Sway Bars

Steering:

Power Steering System, Steering Rack, Tie Rods, Steering Column

Brakes:

Front and Rear Disc Brakes, ABS (Anti-lock Braking System), Brake Calipers, Master Cylinder, Fluid Specifications

Electrical System:

Battery, Alternator, Starter Motor, Fuses, Relays, Wiring Diagrams

Lighting System:

Headlights, Taillights, Interior Lights, Turn Signals

Interior:

Dashboard, Seats, Trim Panels, HVAC Controls

Bodywork:

Body Panels, Doors, Hood, Trunk, Bumpers, Aerodynamics

HVAC:

Air Conditioning System, Heater Core, Blower Motor, Controls

Procedures Included

Maintenance:

Routine Service, Oil Changes, Filter Replacements, Spark Plug Changes, Brake Fluid Flush

Repair:

Engine Rebuild, Transmission Overhaul, Suspension Component Replacement, Brake System Repair

Diagnostics:

Troubleshooting Common Issues, Fault Code Interpretation, Component Testing

Specifications:

Torque Values, Tolerances, Fluid Capacities, Electrical Schematics

Troubleshooting:

System-by-system fault finding guides

Technical Depth

Depth:

In-depth, suitable for professional mechanics and advanced DIY enthusiasts

Detail Level:

Step-by-step instructions, detailed diagrams, and technical explanations

📊 Manual Specifications

File Format

File Type:

Searchability:

Text-searchable for quick information retrieval

Print Quality

Resolution:

High-resolution scans for clear diagrams and text

Binding Type

Binding:

N/A (Digital)

Paper Type

Paper Quality:

N/A (Digital)

⚙️ Engine Specifications

Primary Engine

Engine Type:

Naturally Aspirated Inline-4

Engine Code:

S14B23

Displacement:

2302 cc (2.3 Liters)

Bore X Stroke:

91 mm x 87 mm

Compression Ratio:

10.5:1

Valvetrain:

DOHC, 4 valves per cylinder

Performance

Horsepower:

218 hp (163 kW) @ 6750 rpm (European spec)

Torque:

230 Nm (170 lb-ft) @ 4750 rpm (European spec)

Fuel System

Fuel Delivery:

Bosch Motronic M1.3 Fuel Injection

Fuel Type:

Unleaded Premium (91+ Octane)

Ignition System

Ignition Type:

Distributorless Electronic Ignition (DIS)

🔧 Transmission

Standard

Type:

5-speed Manual

Manufacturer Model:

Getrag 265

Optional

Type:

Not Available for M3

Features

Differential:

Limited-Slip Differential (LSD) standard

Gear Ratios:

Refer to manual for specific ratios (dogleg 1st gear on some variants)

Fluid Specifications

Transmission Fluid:

BMW MTF LT-2 or equivalent (check manual for exact spec)

📐 Dimensions

Exterior

Length:

4346 mm (171.1 in)

Width:

1700 mm (66.9 in)

Height:

1370 mm (53.9 in)

Wheelbase:

2564 mm (100.9 in)

Front Track:

1471 mm (57.9 in)

Rear Track:

1480 mm (58.3 in)

Weights

Curb Weight:

1200 kg (2645 lbs) approx.

Gross Vehicle Weight Rating:

Refer to manual

Wheels Tires

Wheel Bolt Pattern:

5x120

Standard Wheel Size:

15 x 7 inches

Standard Tire Size:

205/55 VR 15

🛡️ Safety Features

Ratings

Crash Test Ratings:

NHTSA (US-spec relevant for period), IIHS. Refer to specific crash data if available.

Active Features

Standard (Bosch ABS II)

Passive Features

Airbags:

Driver's airbag optional/late model, not standard on all 1990 models

Seatbelts:

3-point inertia reel seatbelts front

Rollover Protection:

Reinforced A-pillars, integrated roll bar structure (coupe)

💡 Technology Features

Infotainment

Radio:

Factory BMW Bavaria C II or similar cassette/radio system

Speakers:

Factory speaker system

Driver Assistance

Bosch ABS II standard

Connectivity

Aux Input:

Not available from factory

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically 7,500 - 10,000 miles or 12 months (refer to manual for exact recommendation)

Spark Plug Replacement:

Refer to manual, typically 30,000 - 60,000 miles depending on plug type

Timing Belt Replacement:

S14 engine uses a timing chain, not a belt. Refer to manual for inspection.

Fluid Specifications

Engine Oil Capacity:

5.5 Liters (5.8 US Quarts)

Engine Oil Type:

Synthetic SAE 15W-50 or 20W-50 recommended for performance use (check manual for specific BMW approvals)

Coolant Type:

BMW Blue Antifreeze/Coolant (G48) or equivalent

Brake Fluid:

DOT 4 High-Temperature Brake Fluid

Known Issues

Engine Wear:

Potential for valve guide wear, VANOS issues (though S14 is not VANOS, early E30 engines had some issues), oil consumption

Suspension Bushings:

Wear on control arm bushings, rear trailing arm bushings

Rust:

Common E30 vulnerability, especially around wheel arches, rocker panels, and sunroof

Electrical Gremlins:

Aging wiring harnesses and connectors can lead to intermittent issues

Clutch Release Bearing:

Can be a wear item

📚 Vehicle History

Brand Heritage

Bmw Motorsport Division:

Developed by BMW M GmbH for Group A Touring Car homologation

Model Evolution

E30 Generation:

Fourth generation of BMW 3 Series

M3 Debut:

Introduced in 1986, significant updates for later models including 1990 Evolution III

Production

Production Years:

1986-1991 (E30 M3)

Total Production Units:

Approx. 17,970 (all E30 M3 variants)

Evolution Series:

Includes Evolution I, Evolution II, and Sport Evolution (often referred to as Evo III for later models)

🏆 Awards & Recognition

Recognitions

Motorsport Dominance:

Winner of numerous touring car championships worldwide (DTM, ETCC, etc.)

Enthusiast Acclaim:

Consistently ranked as one of the greatest driver's cars and modern classics

Certifications

Homologation Status:

Essential for BMW's racing efforts in Group A touring car series