🏷️ Basic Information

Make:

BMW

Model:

325i

Year:

1989

Chassis Code:

E30

Market Segment:

Compact Executive Car

👋 Introduction

Historical Context:

The E30 generation 3 Series was a benchmark in sporty, driver-focused sedans and coupes, known for its excellent handling and build quality.

Key Competitors:

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

Driving Dynamics:

Renowned for its balanced chassis, precise steering, and engaging driving experience.

Utility:

Essential for owners and mechanics looking to maintain, repair, or restore the iconic E30 325i.

Comprehensive Nature:

Offers in-depth coverage that surpasses basic owner's manuals, catering to complex repair tasks.

📋 Manual Details

Manual Type:

Full Service Repair Manual

Language:

English

Format:

Digital (assumed PDF based on description, will clarify if physical)

Page Count:

Detailed (estimated 800-1200 pages for comprehensive coverage, actual count pending physical inspection or official documentation)

Digital Features:

Searchable text, hyperlinked sections, printable pages

📖 Manual Coverage

Engine:

M20B25 inline-6, including diagnostics, overhaul, component testing, and tuning

Fuel System:

Bosch L-Jetronic fuel injection, fuel pump, injectors, pressure regulator, diagnostics

Ignition System:

Electronic ignition, distributor, coils, spark plugs, wiring

Cooling System:

Radiator, thermostat, water pump, hoses, fan, coolant specifications

Exhaust System:

Manifold, catalytic converter, mufflers, pipework, gaskets

Transmission Manual:

Getrag 260 5-speed manual, clutch, gearbox overhaul, fluid specifications

Transmission Automatic:

ZF 4HP22 4-speed automatic (optional), diagnostics, fluid, seal replacement

Drivetrain:

Driveshaft, universal joints, differential, rear axle, limited-slip differential (LSD) option

Suspension Front:

MacPherson struts, control arms, sway bar, bushings, alignment specifications

Suspension Rear:

Semi-trailing arms, shock absorbers, springs, bushings, alignment specifications

Steering System:

Power steering system, steering rack, pump, fluid, tie rods

Brakes Front:

Vented discs, calipers, pads, fluid, bleeding procedures

Brakes Rear:

Solid discs, calipers, pads, fluid, bleeding procedures, parking brake integration

Electrical System:

Battery, alternator, starter, wiring diagrams, fuses, relays, lighting

Instrument Panel:

Gauges, warning lights, warning chime system (check control), diagnostics

Body And Chassis:

Body panel removal/installation, corrosion protection, frame repair basics

Interior:

Seat removal, dashboard, door panels, trim components, HVAC controls

HVAC System:

Heating, ventilation, air conditioning (A/C) system, refrigerant handling, blower motor

Wheels And Tires:

Tire sizes, pressure, wheel specifications, lug nut torque

Routine Maintenance:

Oil changes, filter replacements, spark plug replacement, fluid checks and top-ups, brake pad inspection

Engine Overhaul:

Complete engine rebuild, piston replacement, ring installation, cylinder honing, head gasket replacement

Transmission Repair:

Manual gearbox disassembly/reassembly, automatic transmission fluid change and filter replacement, basic troubleshooting

Brake Service:

Brake pad/rotor replacement, caliper service, brake line inspection, bleeding procedure

Suspension Repair:

Replacement of struts, shocks, control arm bushings, ball joints, tie rods

Electrical Troubleshooting:

Diagnostic procedures for electrical faults, use of multimeters, troubleshooting wiring harness issues

Fuel Injection Diagnosis:

Troubleshooting L-Jetronic system, sensor testing, idle control valve adjustment

Bodywork Repair:

Minor body panel alignment, rust repair techniques, door mechanism adjustment

HVAC Maintenance:

Evacuating and recharging A/C system, replacing cabin air filters (if applicable), blower motor replacement

Diagnostic Procedures:

Systematic troubleshooting guides for common and uncommon issues

Diagnostic Capabilities:

Advanced diagnostics, component testing, fault code interpretation (where applicable for 1989 model)

Repair Scope:

From simple adjustments to full engine and transmission rebuilds

Rebuild Information:

Detailed instructions for rebuilding major components like the engine, transmission, and steering rack

Restoration Guidance:

Information beneficial for classic car restoration projects, including part identification and specifications

📊 Manual Specifications

Digital Format:

PDF (Portable Document Format)

Searchability:

Full-text searchable for quick information retrieval

Printability:

Optimized for printing individual pages or sections

Image Resolution:

High-resolution images, diagrams, and schematics

Physical Format If Applicable:

Spiral-bound or perfect-bound for lay-flat use (speculative)

Physical Format If Applicable:

Durable, shop-friendly paper stock (speculative)

⚙️ Engine Specifications

Engine Code:

M20B25

Engine Type:

Naturally Aspirated Inline-6 Cylinder, SOHC (Single Overhead Camshaft)

Displacement:

2.5 Liters (2494 cc)

Bore X Stroke:

84.0 mm x 75.0 mm

Compression Ratio:

8.5:1 (US Spec)

Horsepower Rating:

168 hp @ 5800 rpm (US Spec)

Torque Rating:

164 lb-ft @ 4300 rpm (US Spec)

Fuel Delivery:

Bosch L-Jetronic Electronic Fuel Injection (EFI)

Fuel Type:

Unleaded Gasoline (Premium Unleaded Recommended)

Fuel Pressure:

Approx. 3.5 - 4.0 bar (50-58 psi)

🔧 Transmission

Transmission Type:

Getrag 260 5-speed Manual

Transmission Type:

ZF 4HP22 4-speed Automatic

Manual Clutch Type:

Hydraulically Actuated Single Dry Plate Clutch

Manual Fluid Type:

BMW MTF-LT-2 or equivalent (e.g., Pentosin ATF 7200 or Dexron III for older specs, consult manual for exact BMW spec)

Automatic Fluid Type:

Dexron III or ATF equivalent (e.g., Pentosin ATF 5)

📐 Dimensions

Wheelbase:

2570 mm (101.2 in)

Length:

4330 mm (170.5 in)

Width:

1670 mm (65.7 in)

Height:

1380 mm (54.3 in)

Front Track:

1402 mm (55.2 in)

Rear Track:

1416 mm (55.7 in)

Curb Weight:

Approx. 1270 kg (2800 lbs) - Manual Transmission

Gross Vehicle Weight Rating:

Approx. 1700 kg (3748 lbs)

Towing Capacity:

Not officially specified for this model by BMW

Standard Wheel Size:

14-inch or 15-inch alloy wheels

Standard Tire Size:

195/60 R14 or 205/55 VR15 (depending on wheel option)

Bolt Pattern:

5 x 120 mm

🛡️ Safety Features

Crash Test Data:

Limited official crash test data available for this era and specific model; E30 platform generally considered robust for its time.

ABS:

Anti-lock Braking System (ABS) - often standard or optional depending on market/trim

Limited Slip Differential:

Optional M-Sport Limited Slip Differential (LSD) for improved traction

Seatbelts:

Three-point seatbelts with front pre-tensioners (market dependent)

Body Structure:

Reinforced safety cage and crumple zones characteristic of BMW engineering.

💡 Technology Features

Radio:

Factory AM/FM radio with cassette player, often with upgraded speaker systems available.

Check Control:

Advanced for its time, the 'Check Control' system provides visual and audible warnings for various vehicle functions (lights, fluid levels, etc.).

Cruise Control:

Optional cruise control system.

Antenna System:

Powered antenna for radio reception.

🔧 Maintenance

Oil Change Interval:

Typically 7,500 - 10,000 miles or 12 months (manual provides specific recommendations)

Spark Plug Replacement:

Approximately 30,000 miles (using appropriate spark plugs)

Coolant Flush:

Every 2 years or 30,000 miles

Timing Belt Replacement:

The M20 engine uses a timing belt. Replacement interval is critical, typically around 50,000-60,000 miles or 4-5 years. Manual will specify exact interval and procedure.

Engine Oil Capacity:

Approx. 4.5 - 5.0 liters (with filter)

Engine Oil Viscosity:

10W-40 or 15W-50 (depending on climate, consult manual)

Coolant Type:

Ethylene Glycol based antifreeze, typically BMW Blue or similar specification (50/50 mix with distilled water)

Brake Fluid Type:

DOT 4

Common Problems Engine:

Head gasket leaks, cracked cylinder heads (less common on M20), fuel distributor issues, idle control valve problems, oil pan gasket leaks.

Common Problems Suspension:

Worn control arm bushings, worn sway bar links, rear trailing arm bushings, strut mount failure.

Common Problems Electrical:

Corroded wiring connectors, fuel pump relay failure, intermittent dashboard warning lights, starter motor issues.

Common Problems Body:

Rust in common E30 areas: rocker panels, rear wheel arches, battery tray, jacking points.

📚 Vehicle History

Bmw Legacy:

BMW's reputation for building driver-oriented, high-quality automobiles with a focus on performance and engineering excellence.

E30 Generation:

The E30 generation (1982-1994) was a significant evolution for the 3 Series, building on the success of the E21. The 325i was introduced in 1987, replacing the 323i, and became a highly sought-after model for its refined engine and handling.

Facelift:

The 1989 model year falls into the later 'Late Model' E30 phase, which featured revised aerodynamics (larger bumpers, possibly revised grille) and updated interior components compared to early E30s.

Production Years E30:

1982-1994

Production Years 325I:

1987-1991

Manufacturing Locations:

Primarily Germany (Munich, Dingolfing)

🏆 Awards & Recognition

Automotive Press Acclaim:

The E30 generation 3 Series, including the 325i, was widely praised by automotive journalists for its driving dynamics, build quality, and overall performance, frequently appearing on 'best of' lists.