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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.

NHTSA closes book on Jeep 'trailer hitch' recall after all

After much debating and hand-wringing, the National Highway Traffic Safety Administration now says it has "no reservations" with Chrysler's plan to recall certain Jeep Liberty and Grand Cherokee models over concerns that their fuel tanks, which are located behind the rear axle, could rupture or leak in the event of a rear impact. The longstanding argument between the two entities saw Chrysler openly defy the Feds after a request to recall 2.7 million units back in June.
Chrysler's "voluntary campaign" will instead see it recall 1.56-million 1993-2004 model year Grand Cherokee SUVs, along with 2002-2007 Liberty models. Affected vehicles will get a trailer hitch installed free of charge, which Chrysler says will provide an additional degree of protection for the fuel tanks in the event of a crash. Jeeps with Mopar-branded hitches or hitches that were installed at the factory aren't affected by this recall.
Chrysler's argument throughout this battle has been that the Jeeps in question are no more susceptible to fires than comparable vehicles from the same time period, a position that NHTSA has seemingly arrived at as well. "Those vehicles performed at a rate similar to their peers. That is the keystone analysis as to whether something poses an unreasonable risk to safety," said outgoing NHTSA boss David Strickland during an interview with the The Associated Press.

Chrysler recalling 780k minivans over fire risk

Chrysler is recalling 780,000 of its Town & Country and Dodge Grand Caravan minivans from the 2010 to 2014 model years due to the possibility of circuits overheating, which can lead to a fire. Of the 780,000 total vans being recalled, Chrysler estimates that 644,850 are in the US, 106,980 are in Canada, 8,009 are in Mexico, and 20,638 are in other markets. All of the affected vehicles were built between August 25, 2010 and October 31, 2013.
Chrysler's engineers discovered that beverage spills or exposure to moisture (from rain, snow, car washes, and the like) were linked to circuits shorting in the window switch assembly. Short circuits can overheat, and thus, cause a fire.
Chrysler will contact owners and let them know when they may schedule service, at which point, the window switches will be replaced. In the interim, the automaker says that owners may visit their dealers after May 14 to have the switches disconnected.