BMW 3 Series E30 1988 Service Repair Workshop Manual

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🏷️ Basic Information Identification Make: BMW Model: 3 Series Chassis Code: E30 Model Year: 1988 Codes Manual Product Code: BMW_E30_1988_SRWM 👋 Introduction Market Position Segment: Compact Executive Sports Sedan/Coupe/Convertible Competitive Analysis Key Competitors: Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra, Volvo 240 Key Features Driving Dynamics: Renowned for its balanced chassis, rear-wheel-drive platform, and engaging driving experience. Build Quality: Typical BMW build quality, known for durability and a solid feel. Design: Iconic and timeless design by Claus Luthe, contributing to its enduring appeal. 📋 Manual Details Coverage Areas Primary Markets: Global (English Language) Page Count Estimated Pages: 1000+ Pages Detail: Substantial page count indicates thorough coverage of all mechanical, electrical, and body-related systems. Manual Type Type: Service Repair Workshop Manual Target Audience: Professional mechanics and advanced DIY enthusiasts Content Scope: Includes detailed specifications, torque values, clearances, diagnostic flowcharts, and step-by-step repair procedures. Language Language: English Format Format: Digital (likely PDF, based on common practice) Searchability: Likely a searchable PDF, allowing quick access to specific topics. 📖 Manual Coverage Systems Covered Engine Mechanical: Engine block, cylinder head, pistons, crankshaft, camshafts, timing components, lubrication system, cooling system, fuel injection systems (Bosch LE-Jetronic, Motronic), exhaust systems Engine Electrical: Ignition system, starter motor, alternator, engine control unit (ECU), sensors, wiring diagrams Transmission: Manual transmission (Getrag 240, 260) and automatic transmission (ZF 4HP22) overhaul, diagnostics, fluid specifications, shift linkage Drivetrain: Clutch system, driveshafts, differential, axle shafts, wheel bearings Suspension: Front struts, control arms, ball joints, bushings, rear semi-trailing arms, shock absorbers, springs, sway bars Steering: Steering rack, power steering pump, steering column, tie rods, steering linkage Brakes: Front disc brakes (ventilated), rear drum or disc brakes, brake fluid specifications, bleeding procedures, ABS system (where applicable), parking brake Electrical System: Battery, charging system, lighting system (headlights, taillights, interior lights), fuse boxes, relays, horn, wipers, washers, power windows, central locking Body And Chassis: Body panel removal and installation, door mechanisms, hood, trunk lid, bumpers, interior trim, sound deadening HVAC: Heating, ventilation, and air conditioning (HVAC) system operation, components, refrigerant types, service procedures Exhaust System: Catalytic converter, muffler, exhaust manifolds, oxygen sensors (if applicable to variant). Fuel System Components: Fuel pump, fuel filter, fuel pressure regulator, injectors, fuel tank, fuel lines. Cooling System Components: Radiator, expansion tank, thermostat, water pump, hoses, fan (mechanical or electric). Procedures Included Maintenance: Routine checks, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements (oil, air, fuel), spark plug replacement, belt inspection and replacement Diagnostics: Troubleshooting guides for common drivability issues, electrical faults, component testing procedures, diagnostic trouble codes (DTCs) for early Motronic systems Repair: Step-by-step instructions for component removal, overhaul, and reinstallation for all major vehicle systems Rebuilding: Detailed instructions for engine and transmission rebuilds, including torque specifications, clearances, and assembly sequences Troubleshooting: Systematic approach to identifying and resolving problems with detailed symptom-to-cause tables Wiring Diagrams: Comprehensive electrical schematics for all major vehicle systems, enabling efficient fault tracing Wheel Alignment: Specifications for camber, caster, and toe angles for both front and rear suspensions. Lighting System Repair: Headlight aiming, bulb replacement, repair of wiring for taillights, brake lights, turn signals. HVAC Service: Refrigerant system evacuation and recharge (with appropriate tools and training), component replacement (compressor, dryer, expansion valve). Technical Depth Depth: Comprehensive (covering everything from basic maintenance to complete engine and transmission overhauls) Diagnostic Tools: Covers use of basic hand tools, specialized BMW tools (e.g., valve spring compressors, timing tools), and diagnostic procedures for Bosch Motronic systems. Torque Specifications: Precise torque values for all fasteners, critical for engine and chassis assembly. 📊 Manual Specifications File Format Digital Format: PDF Print Quality Readability: High resolution, ensuring clear text and diagrams Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Family: M20 (Inline-6), M10 (Inline-4) Common Variants 1988: 325i/is (M20B25 - 2.5L), 325e (M20B27 - 2.7L - 'eta' engine), 320i (M20B20 - 2.0L - markets outside North America), 325i Convertible (M20B25 - 2.5L) Performance 325I Horsepower: Approx. 168-171 hp (depending on market and specific tuning) 325I Torque: Approx. 220-225 Nm (162-166 lb-ft) 325E Horsepower: Approx. 121-127 hp 325E Torque: Approx. 230-240 Nm (170-177 lb-ft) Fuel System Fuel Injection: Bosch LE-Jetronic (early models/some variants), Bosch Motronic (M1.1, M1.3, M1.5) Fuel Type: Unleaded gasoline (premium) 🔧 Transmission Standard Transmission Type: 4-speed manual (Getrag 240 on 320i/325e), 5-speed manual (Getrag 260 on 325i/is) Optional Transmission Type: 4-speed automatic (ZF 4HP22) Features Clutch: Hydraulically operated single dry plate clutch Rear Axle: Limited-slip differential (LSD) optional on 325i/is 📐 Dimensions Exterior Wheelbase: Approx. 2570 mm (101.2 inches) Length: Approx. 4340 mm (170.9 inches) for Sedan/Coupe Width: Approx. 1675 mm (66.0 inches) Height: Approx. 1380 mm (54.3 inches) for Sedan Weights Curb Weight: Approx. 1200-1350 kg (2645-2976 lbs) depending on body style and options 🛡️ Safety Features Ratings Crash Test Data: Older vehicle, therefore direct modern safety rating...

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Tags: 1988 3 Series BMW Car Cars E30 Misc

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Description

🏷️ Basic Information

Identification

Make:

Model:

3 Series

Chassis Code:

Model Year:

Codes

Manual Product Code:

BMW_E30_1988_SRWM

👋 Introduction

Market Position

Segment:

Compact Executive Sports Sedan/Coupe/Convertible

Competitive Analysis

Key Competitors:

Mercedes-Benz 190E, Audi 80/90, Alfa Romeo 75, Ford Sierra, Volvo 240

Key Features

Driving Dynamics:

Renowned for its balanced chassis, rear-wheel-drive platform, and engaging driving experience.

Build Quality:

Typical BMW build quality, known for durability and a solid feel.

Design:

Iconic and timeless design by Claus Luthe, contributing to its enduring appeal.

📋 Manual Details

Coverage Areas

Primary Markets:

Global (English Language)

Page Count

Estimated Pages:

1000+

Pages Detail:

Substantial page count indicates thorough coverage of all mechanical, electrical, and body-related systems.

Manual Type

Type:

Service Repair Workshop Manual

Target Audience:

Professional mechanics and advanced DIY enthusiasts

Content Scope:

Includes detailed specifications, torque values, clearances, diagnostic flowcharts, and step-by-step repair procedures.

Language

Language:

English

Format

Format:

Digital (likely PDF, based on common practice)

Searchability:

Likely a searchable PDF, allowing quick access to specific topics.

📖 Manual Coverage

Systems Covered

Engine Mechanical:

Engine block, cylinder head, pistons, crankshaft, camshafts, timing components, lubrication system, cooling system, fuel injection systems (Bosch LE-Jetronic, Motronic), exhaust systems

Engine Electrical:

Ignition system, starter motor, alternator, engine control unit (ECU), sensors, wiring diagrams

Transmission:

Manual transmission (Getrag 240, 260) and automatic transmission (ZF 4HP22) overhaul, diagnostics, fluid specifications, shift linkage

Drivetrain:

Clutch system, driveshafts, differential, axle shafts, wheel bearings

Suspension:

Front struts, control arms, ball joints, bushings, rear semi-trailing arms, shock absorbers, springs, sway bars

Steering:

Steering rack, power steering pump, steering column, tie rods, steering linkage

Brakes:

Front disc brakes (ventilated), rear drum or disc brakes, brake fluid specifications, bleeding procedures, ABS system (where applicable), parking brake

Electrical System:

Battery, charging system, lighting system (headlights, taillights, interior lights), fuse boxes, relays, horn, wipers, washers, power windows, central locking

Body And Chassis:

Body panel removal and installation, door mechanisms, hood, trunk lid, bumpers, interior trim, sound deadening

HVAC:

Heating, ventilation, and air conditioning (HVAC) system operation, components, refrigerant types, service procedures

Exhaust System:

Catalytic converter, muffler, exhaust manifolds, oxygen sensors (if applicable to variant).

Fuel System Components:

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

Cooling System Components:

Radiator, expansion tank, thermostat, water pump, hoses, fan (mechanical or electric).

Procedures Included

Maintenance:

Routine checks, fluid changes (oil, coolant, brake fluid, transmission fluid), filter replacements (oil, air, fuel), spark plug replacement, belt inspection and replacement

Diagnostics:

Troubleshooting guides for common drivability issues, electrical faults, component testing procedures, diagnostic trouble codes (DTCs) for early Motronic systems

Repair:

Step-by-step instructions for component removal, overhaul, and reinstallation for all major vehicle systems

Rebuilding:

Detailed instructions for engine and transmission rebuilds, including torque specifications, clearances, and assembly sequences

Troubleshooting:

Systematic approach to identifying and resolving problems with detailed symptom-to-cause tables

Wiring Diagrams:

Comprehensive electrical schematics for all major vehicle systems, enabling efficient fault tracing

Wheel Alignment:

Specifications for camber, caster, and toe angles for both front and rear suspensions.

Lighting System Repair:

Headlight aiming, bulb replacement, repair of wiring for taillights, brake lights, turn signals.

HVAC Service:

Refrigerant system evacuation and recharge (with appropriate tools and training), component replacement (compressor, dryer, expansion valve).

Technical Depth

Depth:

Comprehensive (covering everything from basic maintenance to complete engine and transmission overhauls)

Diagnostic Tools:

Covers use of basic hand tools, specialized BMW tools (e.g., valve spring compressors, timing tools), and diagnostic procedures for Bosch Motronic systems.

Torque Specifications:

Precise torque values for all fasteners, critical for engine and chassis assembly.

📊 Manual Specifications

File Format

Digital Format:

Print Quality

Readability:

High resolution, ensuring clear text and diagrams

Binding Type

Binding:

N/A (Digital Format)

Paper Type

Paper Quality:

N/A (Digital Format)

⚙️ Engine Specifications

Primary Engine

Engine Family:

M20 (Inline-6), M10 (Inline-4)

Common Variants 1988:

325i/is (M20B25 - 2.5L), 325e (M20B27 - 2.7L - 'eta' engine), 320i (M20B20 - 2.0L - markets outside North America), 325i Convertible (M20B25 - 2.5L)

Performance

325I Horsepower:

Approx. 168-171 hp (depending on market and specific tuning)

325I Torque:

Approx. 220-225 Nm (162-166 lb-ft)

325E Horsepower:

Approx. 121-127 hp

325E Torque:

Approx. 230-240 Nm (170-177 lb-ft)

Fuel System

Fuel Injection:

Bosch LE-Jetronic (early models/some variants), Bosch Motronic (M1.1, M1.3, M1.5)

Fuel Type:

Unleaded gasoline (premium)

🔧 Transmission

Standard

Transmission Type:

4-speed manual (Getrag 240 on 320i/325e), 5-speed manual (Getrag 260 on 325i/is)

Optional

Transmission Type:

4-speed automatic (ZF 4HP22)

Features

Clutch:

Hydraulically operated single dry plate clutch

Rear Axle:

Limited-slip differential (LSD) optional on 325i/is

📐 Dimensions

Exterior

Wheelbase:

Approx. 2570 mm (101.2 inches)

Length:

Approx. 4340 mm (170.9 inches) for Sedan/Coupe

Width:

Approx. 1675 mm (66.0 inches)

Height:

Approx. 1380 mm (54.3 inches) for Sedan

Weights

Curb Weight:

Approx. 1200-1350 kg (2645-2976 lbs) depending on body style and options

🛡️ Safety Features

Ratings

Crash Test Data:

Older vehicle, therefore direct modern safety rating comparisons are difficult. Known for robust unibody construction for its era.

Active Features

Optional on most models, standard on some later 325i/is variants

Passive Features

Airbags:

Driver airbag typically optional or standard on higher trims for 1988.

Seatbelts:

3-point front seatbelts, 2-point rear seatbelts (later models may have 3-point rear)

Chassis Design:

Reinforced safety cage, crumple zones

💡 Technology Features

Infotainment

Radio:

Factory AM/FM radio with cassette player, often with premium sound system options.

Onboard Computer:

Optional On-Board Computer (OBC) providing diagnostics, fuel economy, and trip information. Prone to display segment failures.

Driver Assistance

Cruise Control:

Optional on most models.

Connectivity

Phone Integration:

N/A (No factory Bluetooth or smartphone integration)

🔧 Maintenance

Service Intervals

Oil Change Interval:

Typically every 10,000-15,000 km (6,000-9,000 miles) or annually, depending on driving conditions.

Coolant Flush:

Every 2 years or 40,000 km (25,000 miles)

Spark Plugs:

Inspection every 20,000 km (12,000 miles), replacement typically every 40,000-60,000 km (25,000-37,000 miles) depending on type.

Fluid Specifications

Engine Oil:

API SG, ACEA A2/B2 or equivalent. Viscosity: 10W-40 or 15W-50 often recommended for M20 engines, 5W-30 or 10W-40 for M10. Consult manual for precise recommendations based on climate.

Coolant:

BMW-approved ethylene glycol based coolant (e.g., BMW Antifreeze/Coolant concentrate). Mixture typically 50/50 with distilled water.

Brake Fluid:

DOT 4 or DOT 4 PLUS

Transmission Fluid Manual:

GL-4 or GL-5 rated gear oil. Viscosity typically 75W-90 or 80W-90.

Transmission Fluid Automatic:

ZF TE-ML 04D or similar approved ATF (Automatic Transmission Fluid)

Known Issues

Cooling System:

Radiator leaks, thermostat failures, water pump seal leaks, heater core leaks. M20 engines can be prone to overheating if cooling system is neglected.

Fuel System:

Fuel pump failures, fuel accumulator issues, injector problems, porous fuel lines (especially older rubber ones).

Suspension:

Worn control arm bushings, ball joints, trailing arm bushings (cracked), strut mount failures.

Electrical:

Corroded grounds, faulty OBC (On-Board Computer) displays, intermittent electrical issues due to aged wiring harnesses and connectors, failure of the Motronic control unit.

Interior:

Cracked dashboard, sagging headliner, deteriorating door seals, seized window regulators.

Rust:

Common areas include wheel arches, rocker panels, battery tray, rear strut towers, and around windows.

📚 Vehicle History

Brand Heritage

Bmw Legacy:

BMW's reputation for building sporty, driver-focused automobiles with excellent engineering.

Model Evolution

E30 Introduction:

First generation of the 3 Series, launched in 1982, evolved through various body styles (2-door sedan, 4-door sedan, convertible, wagon/touring) and engine options.

1988 Updates:

Minor updates for 1988, potentially including revised interior trim, minor aesthetic changes, and potentially updated electronics on some models. The 325i replaced the 325e in many markets as the flagship 6-cylinder model.

Production

Production Years:

1982-1991 (E30 generation)

Manufacturing Locations:

Germany (primarily Dingolfing, Munich)

🏆 Awards & Recognition

Recognitions

Automotive Press:

Consistently praised by automotive journalists for its driving dynamics, handling, and engineering. Often cited as a benchmark for sports sedans of its era.

Ratings

Collectibility:

High desirability among enthusiasts, particularly the M3 (though not covered by this specific manual), 325i/is, and convertible models. Excellent value for a premium driving experience.