This comprehensive Jeep Grand Cherokee WJ 1991 Factory Service Repair Manual provides detailed instructions and step-by-step diagrams for all workshop procedures. It's the same manual used by official dealers, ensuring you have access to the most accurate and up-to-date information for maintaining and repairing your vehicle. The manual covers a wide range of topics, from basic maintenance like lubrication and fluid changes to complex systems like the engine, transmission, and electrical components. You'll find detailed information on: * **Engine:** Engine specifications, troubleshooting, repair procedures, and maintenance schedules. * **Transmission and Transfer Case:** Detailed information on automatic and manual transmissions, transfer case operation, and repair procedures. * **Suspension:** Complete coverage of suspension components, alignment procedures, and troubleshooting. * **Brakes:** Procedures for inspecting, adjusting, and replacing brake components, including ABS systems. * **Steering:** Detailed information on steering systems, power steering, and alignment procedures. * **Electrical Systems:** Extensive coverage of all electrical systems, including wiring diagrams, troubleshooting guides, and repair procedures. * **Body:** Repair procedures for body panels, doors, windows, and other body components. * **Heating and Air Conditioning:** Detailed information on HVAC systems, including troubleshooting and repair procedures. * **Emission Control Systems:** Complete coverage of emission control systems, including diagnostics and repair procedures. This manual is an invaluable resource for anyone who wants to perform their own repairs, understand their vehicle's systems, or simply have a comprehensive reference guide.

The Jeep Grand Cherokee WJ, produced from 1999 to 2004, marked a significant shift for the iconic American SUV brand. Replacing the popular but aging ZJ generation, the WJ introduced a more refined and modern design language, focusing on comfort and luxury while maintaining the rugged capability expected from a Jeep. Its unibody construction, a departure from the body-on-frame architecture of its predecessor, resulted in a noticeably smoother ride and improved handling. The WJ's interior saw a significant upgrade, featuring enhanced materials and a more spacious cabin layout. It also expanded its powertrain options, offering a range of V6 and V8 engines, including the potent 4.7L PowerTech V8, providing ample power for both highway cruising and off-road adventures. Despite its refinement, the WJ retained the core Jeep DNA. Its Quadra-Trac II and Quadra-Drive 4WD systems ensured reliable traction on challenging terrain, while its rugged underpinnings and high ground clearance offered the ability to tackle obstacles with ease. The WJ's success stemmed from its ability to seamlessly blend comfort and capability, making it a versatile vehicle suitable for a wide range of applications. However, like all vehicles, the WJ was not without its drawbacks. Some owners reported issues with the electronic transfer case, the 4.0L V6 engine's susceptibility to head gasket failures, and the potential for rust in areas prone to corrosion. Nevertheless, the Jeep Grand Cherokee WJ cemented its place as a popular and capable SUV, paving the way for the even more refined and technologically advanced generations that followed.