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JL Jeep Wrangler experiencing death wobble, NHTSA checking into it

The redesigned 2018 JL Jeep Wrangler is selling remarkably well, but it looks like it's still susceptible to age-old Jeep solid front axle vehicle issues. Recently, the NHTSA has received 11 JL Wrangler-specific complaints for a problem referred to as "death wobble" in the Jeep community. It's currently looking into the complaints to see if further action is necessary. Death wobble is a term used predominantly by Jeep and specifically Wrangler owners to describe a violent steering wheel oscillation, typically caused by hitting some form of bump or pothole at higher speeds. For it to occur, there has to be something loose or damaged within the front steering or suspension system. The death wobble gets its name, because the vibrations through the steering wheel are far more frightening than any kind of a wheel imbalance problem. However, using the word "death" would be a misnomer as well, because there are no reported deaths due to the issue over decades of Jeeps experiencing the issue. A little over a month ago, FCA decided it needed to recall 18,000 JL Wranglers because of a faulty weld around where the track bar is welded to the frame. As of now, there's no evidence linking this faulty weld with death wobble (an FCA spokesperson told us as much), but one of the most common causes of death wobble is a track bar issue. If a bad track bar weld is your problem, you're in far worse shape than any death wobble, because you'll end up with a complete loss of steering. We asked Jeep about death wobble and a company spokesperson said that it "is not a widespread condition, nor is it a safety issue." FCA also said most of the incidents are linked to poorly installed suspension modifications, such as a lift-kit. However, the most current complaints for JL Wranglers describe unmodified and recently purchased vehicles. This means some vehicles still experience the issue despite being stock Wranglers. For now, if you experience the death wobble in your new Jeep, it's best to slow down immediately in a safe place. Most are taken by surprise by the sudden oscillations from the wheel, but you should still be able to control the car. FCA says that even if you do experience the issue, it is routinely corrected on its own. We'll keep tabs on this, and update if there are any developments. Related video:

FCA's Pentastar V6 gets more power, efficiency for 2016

Already a vital member of FCA's powertrain lineup, the 3.6-liter Pentastar V6 is receiving major efficiency improvements for 2016. Thanks to a massive amount of new tech attached to the mill, fuel economy is up six percent, and torque below 3,000 rpm jumps nearly 15 percent. The updates arrive first in the 2016 Jeep Grand Cherokee, but they should proliferate to other models eventually. At least in the Grand Cherokee, the tweaks push power up five horsepower to 295 ponies. FCA's engineers went through the Pentastar from top to bottom to eke out as much efficiency as possible. For example, there's now a two-speed variable-valve lift system that can run in low- or high-lift modes. This upgrade is responsible for 2.7-percent better economy, the company claims. A new intake manifold with longer runners and updated variable-valve times also helps boost the torque output. Further improvements come from pushing the compression ratio to 11.3:1, from 10.2:1 before. Perhaps most impressive is that despite all of the innovations, the latest Pentastar actually weighs four pounds less than the current version. Beyond the Pentastar improvements, all of the FCA US gasoline engines, except for the Viper's 8.4-liter V10, will be E15-compatible for 2016. The company says that it wants to be ready for the higher ethanol content fuel's greater use in the near future.

Chrysler recalling hundreds of thousands of Jeep Grand Cherokee and Commander SUVs

The public might associated ignition switch recalls with General Motors - and with good cause - but that's not the only automaker calling its vehicles back in to fix that sort of issue.
Last month we reported that the National Highway Traffic Safety Administration was investigating an array of Chrysler Group vehicles for electrical-related safety issues. The administration and Chrysler subsequently issued a recall for 700,000 Dodge Journey crossovers, Dodge Grand Caravan minivans and Chrysler Town & Country minivans. But while the Jeeps that were also under investigation were not covered in that recall, they are being addressed in a separate one now.
Although Chrysler reports that it is only aware of a single accident stemming from this issue, it is "committing now to conduct a recall out of an abundance of caution." The recall affects the 2006-2007 Jeep Commander and 2005-2007 Jeep Grand Cherokee, of which it reports there are 792,300 on the road: 649,900 in the United States, 28,800 in Canada, 12,800 in Mexico and a further 100,800 outside of North America.