Positioning:
The BMW 3 Series of this era (E30) was a benchmark in compact executive sedans and coupes, known for its sporty handling and build quality. This manual caters to owners and enthusiasts who value these characteristics and wish to maintain or restore their vehicles.
Competitors:
Competed with vehicles like the Mercedes-Benz 190E, Audi 90, and Alfa Romeo 75. The E30's reputation for driver engagement set it apart.
Features:
Renowned for its balanced chassis, rear-wheel-drive dynamics, and durable engineering. The 325 models offered a powerful inline-six engine for the time.
Coverage:
Comprehensive repair, maintenance, rebuilding, refurbishment, and restoration
Pages:
Extensive (specific count not provided in product info, but implied to be comprehensive)
Type:
Full Service Repair Manual
Format:
Likely digital (PDF) or printed book
Engine:
Engine mechanicals, fuel system, ignition system, cooling system, lubrication system, exhaust system
Transmission:
Manual and automatic transmission, clutch, driveshaft, differentials
Brakes:
Hydraulic system, disc and drum brakes, parking brake, ABS (if equipped)
Suspension:
Front and rear suspension, shock absorbers, springs, control arms, steering knuckles
Steering:
Steering rack, power steering system, steering column
Electrical:
Wiring diagrams, battery, alternator, starter, lighting, instrumentation, power windows, locks
Body:
Body panels, interior trim, doors, windows, bumpers, corrosion protection
Chassis:
Frame, subframes, chassis components
Maintenance:
Oil changes, filter replacements, fluid checks and top-offs, tune-ups, belt replacements
Repair:
Engine component repair/rebuild, transmission overhaul, brake system service, suspension component replacement, electrical diagnostics and repair
Troubleshooting:
Diagnostic procedures, fault finding guides, common problem solutions
Rebuilding:
Complete engine rebuild procedures, transmission rebuilds
Restoration:
Detailed guidance for bringing a vehicle back to original specifications
Depth:
In-depth, professional-level technical information suitable for experienced mechanics and dedicated DIY enthusiasts
File Type:
Likely PDF for digital versions, allowing for searchability and printing
Quality:
High-resolution for clear diagrams and text (typical of quality service manuals)
Binding:
If printed: Perfect bound or spiral bound for ease of use in a workshop setting
Paper:
If printed: Durable paper stock, often with laminated covers for workshop environments
Engine Code 325:
M20B27 (2.7L Inline-6)
Engine Code 325E:
M20B27 (2.7L Inline-6, 'eta' or efficiency-oriented version)
Engine Code 325Es:
M20B27 (2.7L Inline-6, 'eta' with sportier tuning or options)
Horsepower 325E:
Approx. 121 hp @ 4800 rpm (varies slightly by market/tuning)
Torque 325E:
Approx. 170 lb-ft @ 3000 rpm (varies slightly by market/tuning)
Horsepower 325Es:
Approx. 124-127 hp @ 4800 rpm (typically with sportier exhaust/tuning)
Torque 325Es:
Approx. 170-174 lb-ft @ 3000 rpm
Injection Type:
Bosch Motronic fuel injection (specific version depending on exact model/market)
Fuel Type:
Unleaded gasoline (Premium recommended)
Bore X Stroke:
84.0 mm x 90.0 mm (M20B27)
Compression Ratio 325E:
8.5:1
Compression Ratio 325Es:
9.1:1 (often for 'eta' sport models)
Standard Transmission Type:
Getrag 260 5-speed manual transmission
Optional Transmission Type:
ZF 4HP22 4-speed automatic transmission
Clutch Type:
Hydraulically actuated single dry plate clutch
Rear Axle:
Limited-slip differential (LSD) often available as an option
Wheelbase:
Approx. 101.2 inches (2570 mm)
Length:
Approx. 170.5 inches (4330 mm)
Width:
Approx. 67.3 inches (1710 mm)
Height:
Approx. 54.8 inches (1392 mm)
Curb Weight Manual:
Approx. 2850 lbs (1293 kg) - varies by model and equipment
Curb Weight Automatic:
Approx. 2950 lbs (1338 kg) - varies by model and equipment
Gross Vehicle Weight Rating:
Typically around 3900 lbs (1769 kg) - consult specific vehicle documentation
NHTSA Impact Performance:
Good overall safety for its era, though specific standardized ratings (like modern NHTSA scores) may not be directly comparable. Known for robust construction.
ABS:
Anti-lock Braking System (ABS) available as an option on some models, particularly later E30s and specific variants.
Airbags:
Driver's side airbag introduced as an option or standard on later models of this generation; not standard on all 1988 models.
Seatbelts:
Three-point front seatbelts, rear lap belts (three-point belts often standard in front)
Body Structure:
Reinforced safety cage, crumple zones designed for impact absorption.
Audio System:
Original systems were typically AM/FM cassette radios, often with optional premium sound systems (e.g., Blaupunkt, Becker) with multiple speakers.
Display:
Basic analog gauges for speedometer, tachometer, fuel level, coolant temperature, oil pressure. Warning lights for various systems.
Cruise Control:
Available as an option on many models.
Climate Control:
Manual HVAC system, with optional automatic climate control on higher trims.
Connectivity Features:
No modern connectivity features (Bluetooth, USB, Apple CarPlay/Android Auto) from the factory. Aftermarket head units are common for upgrades.
Oil Change:
Every 5,000-7,500 miles or 6-12 months, depending on driving conditions and oil quality used.
Coolant Flush:
Recommended every 2-3 years or 30,000-40,000 miles.
Timing Belt:
If applicable (M20 is a timing belt engine): Replace every 45,000-60,000 miles or 4-5 years. Critical to prevent catastrophic engine damage.
Engine Oil:
SAE 10W-40 or 15W-50 (depending on climate and specific BMW recommendations). API SG or higher quality.
Coolant:
BMW Blue (or equivalent) ethylene glycol-based coolant mixed 50/50 with distilled water.
Transmission Fluid Manual:
SAE 75W-90 or 80W-90 GL-4 gear oil (API GL-5 is NOT recommended for manual transmissions with yellow metal components).
Transmission Fluid Automatic:
Dexron III ATF (or equivalent specification).
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Power Steering Fluid:
ATF (Automatic Transmission Fluid) is typically used.
Common Issues:
Cooling system leaks (radiator, hoses, water pump), fuel distributor leaks, fuel pump failures, idle control valve issues, subframe cracking (rear), differential mounts, seized calipers, window regulator failures, door handle microswitches.
Engine Specific Issues:
Eccentric shaft wear (on some 'eta' engines), oil pan seal leaks, valve cover gasket leaks.
Electrical Issues:
Corroded grounds, faulty instrument cluster connections, failing alternator voltage regulators.
Heritage:
BMW, Bayerische Motoren Werke AG, has a long history of producing performance-oriented luxury vehicles, with a particular strength in inline-six engines and exceptional chassis tuning.
E30 Introduction:
The E30 chassis was introduced in 1982 as the successor to the E21. It was a significant evolution, offering improved aerodynamics, more refined suspension, and the introduction of the iconic M3 variant.
1988 Updates:
By 1988, the E30 lineup included the 325e and 325es, which featured the larger 2.7L 'eta' engine for increased torque and fuel efficiency, often paired with sportier aesthetic or mechanical options in the 'es' model.
Production Period:
E30 series produced from 1982 to 1994 (sedan/coupe/convertible); 1985-1991 for the M3 variant.
Manufacturing Locations:
Primarily Germany, with some production also occurring in South Africa and other international facilities.
Awards General:
While specific awards for the 1988 325/325e/325es models are not widely publicized as individual accolades, the E30 generation itself received widespread critical acclaim for its driving dynamics and sports sedan leadership.
Driving Dynamics:
Consistently rated highly by automotive journalists for its handling, steering feel, and overall driver involvement, setting benchmarks for the segment.
