2014 Chrysler 300 Base 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.

Feds fretting over remote hack of Jeep Cherokee

A cyber-security gap that allowed for the remote hacking of a Jeep Cherokee has federal officials concerned. An associate administrator with the National Highway Traffic Safety Administration said Thursday that news of the breach conducted by researchers Chris Valasek and Charlie Miller had "floated around the entire federal government." "The Homeland Security folks sent out broadcasts that, 'Here's an issue that needs to be addressed,'" said Nathaniel Beuse, an associate administrator with the National Highway Traffic Safety Administration. Valasek and Miller commandeered remote control of the Cherokee through a security flaw in the cellular connection to the car's Uconnect infotainment system. From his Pittsburgh home, Valasek manipulated critical safety inputs, such as transmission function, on Miller's Jeep as he drove along a highway near St. Louis, MO. The scope of the remote breach is believed to be the first of its kind. The prominent cyber-security researchers needed no prior access to the vehicle to perform the hack, and the scope of the remote breach is believed to be the first of its kind. A NHTSA spokesperson said the agency's cyber-security staff members are "putting their expertise to work assessing this threat and the response, and we will take action if we determine it's necessary to protect safety." A Homeland Security spokesperson referred questions about the hack to Chrysler. Fiat Chrysler Automobiles has already been the subject of a federal hearing this month, in which officials scrutinized whether the company had adequately fixed recalled vehicles and repeatedly failed to notify the government about defects. But cyber-security concerns are a new and different species for the regulatory agency. Only hours before the Jeep hack was announced by Wired magazine earlier this week, NHTSA administrator Dr. Mark Rosekind said hacking vulnerabilities were a threat to privacy, safety, and the public's trust with new connected and autonomous technologies that allow vehicles to communicate. NHTSA outlined its response to the cyber-security challenges facing the industry in a report issued Tuesday. In it, the agency summarized its best practices for thwarting attacks and said it will analyze possible real-time infiltration responses. But the agency's ability to handle hackers may only go so far.

2018 Chrysler Pacifica Hybrid Long-Term Update | Recall!

Our long-term 2018 Chrysler Pacifica Hybrid has been in the fleet for about six months now and is quickly accumulating more miles than most of our long-term vehicles do in a full year. Thanks to a couple of recent road trips, one to New England and one to Florida, our Ocean Blue Metallic minivan has racked up about 15,000 miles. I personally hope we can cross the 25,000-mile mark before we're finished. The Pacifica Hybrid has garnered near universal praise from the Autoblog staff, especially those of us who have kids or pets. While it's mostly been hiccup free, one recall had us a bit on edge. NHTSA campaign number 18V740000 was issued last fall, but we didn't get the notification until early this year. Blame the delay on the weird ownership situation of long-term vehicles. NHTSA's basic description is short. "After the vehicle has been operating in PHEV propulsion mode, the gas-fueled engine may not restart properly resulting in unburned fuel entering the exhaust catalyst." Basically, the engine may not restart correctly after running in EV mode, and the fuel being fed to the engine could make its way past the exhaust manifold to the catalytic converters and ignite, possibly starting a fire. Obviously, that's bad. We scheduled a visit to the dealer as soon as we got the news. Chrysler's fix is to update the computer, visually inspect the cats and replace them if needed. We hadn't noticed any issues with the Pacifica's powertrain, and the inspection came back clean, so our Pacifica was back in our hands in a few hours. The service sheet says the left and right cats were inspected by borescope and the powertrain control module was updated. All in, the Pacifica was out of our hands for about half a day. Related Video: