Era:
The E28 generation represented BMW's mid-size luxury sedan offering in the early to mid-1980s, known for its blend of performance, luxury, and sophisticated engineering.
Competitors:
Competed against vehicles like the Mercedes-Benz W123, Audi 100, and Volvo 240.
Design Philosophy:
Continuation of BMW's 'ultimate driving machine' philosophy with a focus on driver engagement and refined handling.
Target Audience:
Professionals and driving enthusiasts seeking a premium, reliable, and engaging sedan.
Purpose:
Provides essential technical information for maintaining, diagnosing, and repairing the electrical systems of the 1982 BMW 528e (E28).
Electrical Systems:
Comprehensive coverage of all electrical systems including ignition, starting, charging, lighting, instrumentation, comfort systems, engine control, and more.
Wiring Diagrams:
Detailed and accurate wiring diagrams for all vehicle electrical circuits.
Component Locations:
Identification and location of all electrical components.
Troubleshooting Charts:
Systematic troubleshooting flowcharts for diagnosing electrical faults.
Diagnostic Procedures:
Step-by-step diagnostic procedures for identifying and resolving electrical issues.
Repair Procedures:
Detailed repair and replacement procedures for electrical components and wiring harnesses.
Testing Procedures:
Procedures for testing electrical components and circuits using appropriate tools and equipment.
Depth:
Advanced diagnostic and repair procedures suitable for professional technicians and experienced DIY enthusiasts.
Configuration:
Inline 6-cylinder
Displacement:
2.7 Liters (2693 cc)
Bore X Stroke:
84.0 mm x 81.0 mm
Compression Ratio:
8.5:1 (US Spec)
Horsepower Hp:
121 hp @ 4250 rpm (US Spec)
Torque Lb Ft:
170 lb-ft @ 2500 rpm (US Spec)
Fuel Delivery:
Bosch L-Jetronic Fuel Injection
Ignition Type:
Electronic Ignition (Bosch Motronic for later E28s, likely L-Jetronic with separate ignition control for 1982)
Coolant Type:
BMW Blue Coolant or compatible G48 ethylene glycol coolant
Oil Capacity Quarts:
6.0 Quarts (with filter)
Recommended Oil Viscosity:
10W-40 or 15W-50 (depending on climate)
Transmission Type:
4-Speed Manual (Getrag 260)
Transmission Type:
3-Speed Automatic (ZF 4HP22)
Clutch Type:
Dry single-plate clutch (Manual)
Manual Transmission Fluid:
GL-4 Gear Oil, e.g., 75W-90
Automatic Transmission Fluid:
Dexron III or equivalent
Safety Certification:
While specific NHTSA ratings for 1982 models are often not readily available in the same format as modern vehicles, BMWs of this era were engineered with a focus on occupant safety for their time.
Brakes:
Front: Ventilated Discs, Rear: Solid Discs. ABS was not standard on this model year.
Suspension:
Independent front suspension (MacPherson struts), Semi-trailing arm rear suspension, designed for stability and handling.
Seatbelts:
Three-point front seatbelts with automatic retractors, lap belts for rear passengers.
Body Construction:
Unitized steel body construction with crumple zones.
Audio System:
Factory AM/FM radio with cassette player. Options for upgraded sound systems.
On Board Computer:
Optional On-Board Computer (OBC) displaying trip data, fuel consumption, and diagnostic information.
Cruise Control:
Available as an option.
Climate Control:
Manual or optional automatic climate control system.
Original Connectivity:
No modern connectivity features like Bluetooth or USB. Relies on analog systems.
Oil Change Interval Miles:
Every 5,000 - 7,500 miles or 12 months, whichever comes first (recommended for longevity).
Spark Plug Replacement Miles:
Typically every 20,000 - 30,000 miles, depending on type (check manual for specifics).
Coolant Flush Miles:
Every 2-3 years or 30,000 miles.
Timing Belt Replacement Miles:
The M20 engine uses a timing belt. Replacement recommended every 60,000 miles or 5 years.
Brake Fluid Type:
DOT 3 or DOT 4
Power Steering Fluid Type:
ATF Dexron III or equivalent
Electrical:
Corrosion in fuse boxes, degraded wiring insulation, failing headlight relays, OBC (On-Board Computer) issues, dashboard warning light problems.
Engine:
Head gasket failures (less common on M20 than some others), coolant leaks from hoses and water pump, valve cover gasket leaks, idle control valve issues.
Fuel System:
Clogged fuel injectors, failing fuel pumps, vacuum leaks affecting performance.
Cooling System:
Replacement of radiator, thermostat, water pump, and hoses are common as these age.
Suspension And Steering:
Worn control arm bushings, tie rod ends, and sway bar links can affect handling and ride quality.
Bmw Legacy:
BMW, Bayerische Motoren Werke AG, has a long history dating back to 1916, initially producing aircraft engines before transitioning to motorcycles and automobiles.
E28 Introduction:
The E28 succeeded the E12 5-Series and was produced from 1981 to 1988. It featured a more aerodynamic design and updated engineering.
E28 Significance:
The E28 solidified BMW's reputation for combining luxury with sporty driving dynamics. The 528e model, with its 'eta' engine, focused on fuel efficiency while retaining a respectable level of performance.
Production Years:
1981-1988 (E28 Generation)
Manufacturing Locations:
Germany
Automotive Press Awards:
While specific awards for the 1982 528e might not be individually highlighted, the E28 generation as a whole received critical acclaim for its driving dynamics, build quality, and sophisticated engineering from various automotive publications of its time.
Reliability Reputation:
BMWs from this era are generally regarded as well-built and durable, though maintenance is key. Electrical systems, in particular, require diligent upkeep.
