This comprehensive owner's manual for the Porsche 964 911 Carrera4, covering model years 1989-1994, provides in-depth technical information and maintenance instructions. It is divided into seven volumes, each focusing on a specific area of the vehicle.

Volume 1 delves into the engine, maintenance procedures, self-diagnosis, and detailed components such as the crankshaft, pistons, cylinder head, valve drive, lubrication system, cooling system, fuel supply, fuel injection system, exhaust system, emission controls, starter, power supply, cruise control, ignition system, and comprehensive diagnostics.

Volume 2 and 3 explore the transmission system, with Volume 2 focusing on the manual transmission, covering the clutch, controls, clutch system, manual transmission components, gears, shafts, differential, transaxle system, and all-wheel drive diagnostics. Volume 3 covers the automatic transmission, including the clutch, controls, torque converter, automatic transmission components, gears, shafts, differential, transaxle system, and diagnostics.

Volume 4 details the chassis, encompassing the front and rear wheel suspension, axle shafts, wheels, tires, alignment, antiblock system, mechanical and hydraulic brake systems, brake regulator and booster, steering system, and diagnostics.

Volume 5 delves into the body, covering the front, center, and rear sections, lids, doors, electric sunroof, hardtop, bumpers, glasses, window control, exterior and interior equipment, seats, and seat covers.

Volume 6 focuses on heating, ventilation, and air conditioning systems, including the heater, ventilation system, air conditioner, diagnostics, instruments, fuel gauge, alarm system, radio, telephone, on-board computer, windshield wipers and washer, exterior lights, lamps, switches, interior lights, and diagnostics.

Volume 7 provides detailed electrical wiring diagrams, offering a comprehensive visual guide for understanding the intricate electrical system of the Porsche 964 911 Carrera4.

The Porsche 964 911 Carrera 4, fondly referred to as the "964," represents a significant chapter in the evolution of the iconic Porsche 911. Launched in 1990, this generation of the 911 marked the first time a 4-wheel drive system was offered on a production 911, a feature previously exclusive to the rugged, off-road-focused 959. The Carrera 4's all-wheel-drive system, known as Porsche Traction Management (PTM), provided a significant boost to the car's already impressive handling, especially in challenging weather conditions. This technological advancement, coupled with the redesigned bodywork featuring a wider track and improved aerodynamics, made the 964 a truly capable machine both on the road and on the track.

Under the hood, the 964 Carrera 4 was powered by a 3.6-liter air-cooled flat-six engine producing 250 horsepower. This engine provided the 964 with a thrilling driving experience, delivering smooth, linear power delivery and a distinctive, evocative sound. The car’s performance was further enhanced by a revised suspension system with independent strut suspension on all four wheels, providing a comfortable ride and precise handling. The 964 Carrera 4 was offered in both coupe and cabriolet body styles, each offering a unique blend of performance and luxury. The interior featured a comfortable and driver-focused cockpit, with high-quality materials and a practical layout. A classic example of the Porsche 964 911 Carrera 4, with its timeless design and engineering excellence, continues to be a coveted and sought-after classic car among enthusiasts.