The BMW 5 Series, chassis code E34, represents a significant chapter in the brand's legacy of producing luxury mid-size executive sedans and wagons. For the 1991 model year, this vehicle is characterized by its evolved design philosophy, featuring sharper lines and an iconic kidney grille, building upon the reputation for performance, driving dynamics, and sophisticated engineering that BMW is known for. Available in both 4-door sedan and 5-door touring body styles, the E34 was equipped with a range of inline-six and V8 engines, primarily rear-wheel drive, and offered advanced features for its time, including Anti-lock Braking System (ABS) and optional Automatic Stability Control (ASC). Its robust mechanical design and build quality have contributed to its perception as a reliable vehicle when properly maintained.

This comprehensive factory service repair manual provides in-depth guidance for all E34 variants from the 1991 model year. It covers a vast array of systems, including detailed engine mechanicals, electronic engine management, fuel and cooling systems, drivetrain, brakes, suspension, steering, and electrical systems, along with bodywork and HVAC. The manual details routine maintenance procedures, systematic troubleshooting guides, and complete repair instructions for everything from basic servicing to complex overhauls of engines and transmissions. It also includes essential technical specifications, special tool requirements, and diagnostic procedures for engine management, ABS, and automatic transmissions, ensuring owners, mechanics, and technicians have the necessary information to maintain and repair this vehicle effectively.