So, for some reason, Jeep decided to change the type of battery they use in the Jeep JK Wrangler from a Group 34, which was used in 2007-11, to a Group 91 which is now used in all 2012’s and I presume, on up. While this really shouldn’t be that big of a deal, the terminals on a Group 91 battery are opposite to those on a Group 34 and, this makes it near impossible to hook up the leads or, at least not without having to do some modifications. Of course, as luck would have it, a Group 91 battery or it’s equivalent, a Group 48, isn’t really a common size you find in a deep cycle format and unfortunately, not something that’s available in a Sears Diehard Platinum, Odyssey or even Optima.
The all new 2012 Jeep JK Wrangler comes with a new vacuum assist or pump which is located on the driver side frame rail and just behind the front bumper. For the most part, there’s nothing wrong with where it’s placed but, if you choose to run an aftermarket front bumper and install a large winch that sits between the frame rails, it is something that will need to get relocated.
There is so much I absolutely love about the all new 2012 Jeep JK Wrangler – I love the new interior, all the new creature comforts, tailgate that stays open on it’s own and who could forget the awesome 3.6L vvt Pentastar Engine with 5 speed automatic transmission. But, I do have to say I was a bit surprised to see all the new changes under the belly including a crazy exhaust loop, dangerously exposed transmission cooler line and no skid plates presnt to protect any of it.
Because you never know when you’re gonna need a little extra light, I like to carry a good MagLite flashlight with me in my JK.
|Having come from a background of CJ’s, TJ’s and XJ’s that all came with nice torquey 258 or 4.0L I-6 engines, it was hard for me to get used to the lathargic 3.8L V6 that the JK’s come with. Granted, my previous Jeeps may not have been speed demons but, at least wanted to get up and go as soon as you hit the gas. More than the motor, the problem with lag that the JK’s have comes from the fact that they now come with an ETC or electric Throttle Control. And, while there are solutions available that can help address this lag by allowing you to reprogram your computer, there is another solution that does a great job of helping out as well – Sprint Booser.|