1999 jeep grand cherokee 4.7




1999 jeep grand cherokee 4.7

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    1999 jeep grand cherokee 4.7

    1999 jeep grand cherokee 4.7

    Front-engine , rear-wheel drive or four-wheel drive. The electronic Vehicle Information Center was moved from below the radio to above the windshield, and was standard on all and up models. Archived February 5, , at the Wayback Machine. By adding stiffness and rigidity to the structure, they enhanced the ride and strengthened the network of steel beams, rails and pillars or "safety cage" that surround and protect occupants.

    1999 jeep grand cherokee 4.7

    1999 jeep grand cherokee 4.7

    1999 jeep grand cherokee 4.7

    1999 jeep grand cherokee 4.7

    1999 jeep grand cherokee 4.7

    The spare tire was relocated from the side of the cargo compartment to under the floor. The two heavy pushrod V8 engines were replaced by Chrysler's then-new PowerTech. New V8 engine produced less torque than the old pushrods, but was lighter, offered better fuel economy, and provided similar on road performance figures the gallon fuel tank was replaced with one of a The Inline 6 engine was also updated for MY A redesign of the intake manifold added 10 horsepower 7.

    While other Jeep vehicles used the Mopar 5 x 4. A notable feature available in this generation was the automatic four wheel drive option called Quadra-Drive , which employed the New Venture Gear NV transfer case.

    1999 jeep grand cherokee 4.7

    This two-speed chain-driven transfer case uses a gerotor, a clutch pack coupled to a hydraulic pump, to transfer torque between the front and rear axles.

    The transfer case contains three modes, 4-All Time, Neutral, and 4-Lo. If the rear axle starts spinning at a higher rate than the front axle, hydraulic pressure builds up in the gerotor and causes the clutch pack to progressively transfer torque to the front axle until both axles return to the same speed.

    1999 jeep grand cherokee 4.7

    Neutral mode is intended for towing the vehicle. In 4-Lo, the front and rear axles are locked together through a 2. Vari-Lok differentials also use a gerotor to transfer torque between the wheels on either side of the axle. The major advantage of Quadra-Drive was that the combined transfer case and progressive locking differentials in each axle could automatically control traction between all four wheels.

    However, only the center differential could be permanently locked, and only in 4Lo. It included three planetary gear sets rather than the two normally used in a four-speed automatic. This gave it six theoretical speeds, and it would have been the first six-speed transmission ever produced in volume, but it was programmed to only use five of these ratios.

    Four were used for upshifts, with a different second gear for downshifts. Although five of the six ratios were used, Chrysler decided to call it a "4-speed automatic". In , the programming was changed to make use of all six ratios. Rather than have six forward gears, the transmission was programmed to act as a five-speed with the alternate second gear for downshifts.

    1999 jeep grand cherokee 4.7

    The 42RE 4-speed automatic remained the transmission for the Inline 6 engine. It had slight changes from the previous model Grand Cherokee. The interior was also completely redesigned. The redesign allowed for larger rear doors, and more space for rear passengers.

    Controls for various items like headlights, heated seats, and rear wiper were moved to more convenient locations. The electronic Vehicle Information Center was moved from below the radio to above the windshield, and was standard on all and up models. Limited models included automatic dual-zone climate control.



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