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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 investigating why Jeep recall fix is taking so long

Jeep's saga with the National Traffic Safety Administration and the voluntary campaign to repair 1.56 million vehicles for allegedly unsafe trailer hitches, is getting yet another chapter. The controversy appeared to finally be over in January when the automaker found a supplier for the replacement parts. Nothing is ever that easy, though, and the government regulator is now requesting documents from the company to clarify why the repairs are taking so long to begin.
Jeep parent company Chrysler has until July 16 to submit documents and answers to NHTSA explaining the situation. The regulator claims that despite its compromise to inspect and repair the models with improper hitches in June 2013, Chrysler didn't find a part supplier until December and didn't order the replacements until January. The government agency believes that the first components weren't manufactured until May of this year and vehicles may not actually be repaired until as late as August. According to the report, if the Chrysler doesn't supply what NHTSA is asking for, the agency could "take additional appropriate action as warranted."
Throughout this entire process, Chrysler has asserted that the vehicles met the applicable crash test standards of the time, and it has kept NHTSA abreast of the repair activity. In a recently released statement it said that the regulator analyzed eight rear impact reconstruction tests and found the replacement hitch to be safe. To keep up with the high demand for replacements, Chrysler is working with multiple suppliers, and they are running three shifts, six days a week to get the parts ready as soon as possible.

Jeep Renegade sales being held due to powertrain issue [UPDATE]

UPDATE: An unnamed FCA US source has clarified to Automotive News that while there is a software issue, it does not concern the transmission. The Jeep Renegade appears to be facing early software problems that are similar to the ones at the introduction of the Cherokee a few years ago. The issue is keeping the brand's latest compact crossover away from dealers until the situation can be resolved. The fault reportedly deals with the software controlling the Renegade's nine-speed automatic transmission. FCA CEO Sergio Marchionne briefly talked about what was happening in an interview with Automotive News. "I'm having a very bad engineering day," he said. "It's a combination of attributes of that vehicle that is making my life horrible." The company boss predicted at the longest it could take until mid-June to fix things. Through April, Jeep has sold 5,157 Renegades, including 4,214 of them in that month alone. Autoblog reached out to an FCA US spokesperson to learn more about the software problem, but the company had no comment. Getting the software right to control the nine-speed automatic plagued development of the Cherokee. The issues delayed the model's launch in 2013, and the company was still releasing improvements for some vehicles this year.