2021 Jeep Grand Cherokee Limited on 2040-cars

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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.

2014 Jeep Cherokee facing production delay

Jeep's bold-faced new direction spearheaded by the 2014 Cherokee is facing some teething issues. According to a report by the Detroit Free Press, production start-up of the controversial new utility vehicle at its Toledo North facility is running about a month behind schedule "due to a wide range of issues." That's according to Mark Chernoby, senior vice president of engineering at Chrysler.
Chernoby maintains that the issues being encountered aren't unusual for the launch of a new vehicle - particularly one with a new powertrain - and he downplayed the delay, telling Jeep dealers that they "will have ample inventory of the midsize SUV by fall." Among the kinks being worked out? Calibrating the Cherokee's cutting-edge ZF nine-speed automatic transmission and refining assembly line tasks to make the process more efficient.
Chrysler expects to start building retail-ready versions of the Cherokee around mid-June, with official sales slated to start in September.

FCA Recalls Jeep in Wake of Wireless Hack | Autoblog Minute

Carjacking has gone wireless, as automakers and Congress scramble for a solution. Adam Morath reports on this edition of Autoblog Minute.