Jeep Wrangler

The Jeep Wrangler is a compact four-wheel drive off-road and sport utility vehicle (SUV), manufactured by American automaker Chrysler, under its Jeep marque – and currently in its third generation. The Wrangler Jeeps are a direct descendant of the World War II Willys military "Jeep" by way of the Willys civilian Jeeps (CJ models) of the mid 1940s through 1980s, later produced by Kaiser-Jeep and by American Motors (AMC).
Just like their predecessors, the Willys MB and the CJ Jeeps, Wranglers continue to use a separate body and frame, rigid live axles both front and rear, a fold-flat windshield, and can be driven without doors.
The Wrangler debuted in 1986 as a revision of the Jeep CJ-7, was revised in 1996, and completely redesigned in 2006. In addition to the nameplate Wrangler, each model received a designation corresponding to its generation: YJ (1986–1995), TJ (1997–2006), LJ's (2003–2006 Unlimited models) and JK (2007–present). Military versions of the Wrangler have carried the J8 designation.
YJ models were manufactured between 1986 and 1992 at AMC Brampton Assembly Plant, and subsequently at the Toledo South Assembly Plant plant.[1] In 2006, Wrangler production was moved to Toledo Supplier Park.[2]

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YJ (1987–1995)

 File:1992 Jeep YJ.JPG

The Jeep YJ, sold as the Wrangler, replaced the much-loved but slower-selling Jeep CJ in 1986 and was built in Brampton, Ontario, Canada, until the plant closed on April 23, 1992. Production was then moved to Toledo, Ohio, using the same plant that produced the Willys Jeeps during World War 2. American Motors Corporation (AMC) had designed the new Jeep to be more comfortable on-road in an attempt to attract more daily drivers.[5] It was a new design with a wider track, slightly less ground clearance, and more comfort. The YJ still had leaf spring suspension similar to that of the CJ - however the springs were wider, and the YJs sported trackbars and swaybars for improved handling. Despite the new grille, the body is very similar to that of the CJ7, and it is interchangeable with some minor modifications. The YJ also was given a larger windshield over the CJ. The YJs are easily identifiable due to the rectangular headlights, disliked by some Jeep aficionados, and the fact that the wiper blades rest on the windshield giving this version a distinctive look. The blades rested on the windshield due to the now wider arc of the blades to clean the larger windshield. These two changes were later removed when the TJ changes came about in 1996. 632,231 YJs were built through model year 1995, although YJs were still produced into mid-1996, bringing the total production number to 685,071 units.
The YJ used a 2.5 L AMC 150 I4 or optional 4.2 L AMC 258 I6 until 1991. That year, a fuel-injected 180 hp (134 kW) 4.0 L AMC 242 variant replaced the 112 hp (84 kW) 4.2 L 258 CID straight-6. The NP207 transfer case was used only for 1987 and replaced by the NP231.


TJ (1997–2006)

 

The YJ gave way to the TJ for the 1997 model year (note that there was no 1996 model year; the 1997 TJ was released in Spring 1996). This updated Wrangler featured a coil-spring suspension (based on that of the Jeep Grand Cherokee) for better ride and handling, and a return to the classic CJ's round headlamps. The engine is the same 4.0 L AMC 242 Straight-6 used in the Cherokee and Grand Cherokee. A 2.5 L AMC 150 Inline-4 motor was available on entry-level models until 2003 when the 2.4 L DOHC 4-cylinder engine previously used on the Chrysler PT Cruiser replaced it.
A right hand drive version of the TJ was available for export markets, and was also offered for sale to US rural route postal carriers. The version offered to US postal carriers was only available with an automatic transmission.

 

JK (2007–present)

 

The 2007 model year brought a complete redesign of the Jeep Wrangler, and for the first time also a four-door model. The TJ chassis was replaced by an all new JK platform. This next-generation Wrangler was noticeably wider than the previous model, with a 3.4-inch (86 mm) wider track; and though the two-door model has a 2-inch (51 mm) longer wheelbase, it is actually 2.5 inches (64 mm) shorter in overall length than the TJ, allowing for a 44.3-degree approach angle and a 40.4-degree departure angle.[21] With a larger factory available tire size of 32 inches, the breakover angle on the Rubicon is increased from 22.6° to 25.4°.[22]
The four-door Unlimited model has an over 20-inch (510 mm) longer wheelbase at 116 in (2,950 mm) to offer much improved rear seating room, but is nevertheless only 2.4-inch (61 mm) longer than the 2006 TJ Unlimited.
The Wrangler JK was introduced at the 2006 North American International Auto Show with past Chrysler group CEO Tom LaSorda driving one up some steps and through a plate glass window, just as Robert Lutz had done at the show in 1992 with the Grand Cherokee. The JK was first available for purchase with the 2007 model year.

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