This comprehensive service repair manual provides detailed information for the Mercury Grand Marquis, covering model years 1979 to 1987. Designed for both owners with basic mechanical skills and independent automotive service professionals, this manual offers the same level of technical information and procedures found in authorized dealer service departments. The manual includes a wealth of information covering every aspect of the vehicle, from general information to detailed breakdowns of specific systems. This includes engine service and overhauling, transmission, chassis, body, wiring, fuel system, emission control, induction, mechanical, control system, transmission and differentials, troubleshooting and diagnostics, steering and suspension, brakes, and even ABS systems. You'll also find complete specifications and torque settings for all components. The manual empowers you to understand and address common vehicle problems. Learn how to diagnose engine fault symptoms, research the best repair solutions, test suspected parts using professional techniques, interpret wiring diagrams, grasp different engine management systems, and understand common fixes, saving you time and money in the long run. This manual helps you become more informed and confident when interacting with mechanics, ensuring you receive the best possible service. This comprehensive guide is an indispensable resource for any Mercury Grand Marquis owner or mechanic, offering valuable insights and practical solutions to keep your vehicle running smoothly.

The Mercury Grand Marquis, a full-size sedan produced by Ford Motor Company under its Mercury division, enjoyed a successful run from 1979 to 1987. It was the successor to the Mercury Marquis, a nameplate that had been around since 1967. The Grand Marquis was designed to offer passengers a spacious and luxurious experience, competing directly with flagship models from Chevrolet, Buick, and Chrysler. It was built on Ford's Panther platform, which also underpinned the Ford LTD Crown Victoria and the Lincoln Continental Mark VI. The Grand Marquis was available in various trims, with the "LS" being the base model and the "GL" offering additional luxury features. The 1979-1987 models were offered with a choice of two powerful V8 engines: a 5.0-liter (302 cubic inches) unit, or the larger 5.8-liter (351 cubic inches) engine. The car's boxy styling, reminiscent of the classic American sedan, was popular with families and individuals seeking a comfortable and reliable ride. The Mercury Grand Marquis from this era was appreciated for its spacious interior, offering ample legroom and headroom for passengers. The car's standard features included power steering, power brakes, automatic transmission, and AM/FM radio. Optional extras allowed buyers to personalize their Grand Marquises with features like air conditioning, cruise control, and plush velour upholstery. The Grand Marquis was known for its solid build quality and durability, making it a popular choice for taxi fleets and businesses. It also garnered a reputation for its smooth ride and comfortable handling, providing a luxurious experience on the road. While not as performance-oriented as its Ford counterpart, the Grand Marquis still offered a satisfying driving experience for those seeking a comfortable and spacious sedan. Its popularity continued even after the introduction of the Fox-platform-based Mercury Marquis in 1985, as the Panther-platform model maintained its loyal fanbase.