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NHTSA closes Ford F-150 EcoBoost acceleration probe

Typically when we report on the findings of an investigation from the National Highway Traffic Safety Administration, it's because the government body has discovered a safety issue and prescribed a recall. In this case, however, NHTSA has closed an investigation into a reported performance deficit without ever getting to the recall stage.
The issue revolves around the Ford F-150 - specifically those equipped with the 3.5-liter EcoBoost engine - of which some 360,000 were built in the 2011, 2012 and 2013 model years. After receiving an initial 95 complaints, NHTSA opened an investigation last May - almost a year ago - into the reported issue of reduced engine power under hard acceleration. The agency has since received a total of 525 such complaints, and Ford itself reported receiving over 4,000.
Together, NHTSA and Ford determined that the problem resulted from cylinders misfiring, an issue itself stemming from water getting into the charge air cooler (CAC) mated to the turbochargers. In particularly humid or rainy conditions, water was found to get into the CAC, causing some of the cylinders to misfire, which in turn triggered the ECU to disable those cylinders in order to protect the catalytic converter from damage.

Bill Ford says carsharing helps Ford, EVs need to be clean

To most people, Bill Ford is most famous for being the great-grandson of Henry Ford. But, as the executive chairman of Ford Motor Company, Ford has also been leading the company into greener and greener territory. At the morning plenary session for the 21st World Congress on Intelligent Transport Systems (ITS) in Detroit today, Ford discussed a wide variety of topics, including connected cars (of course), plug-in vehicle and how Ford's collaboration with Zipcar came about because of he liked what the Zipcar CEO was excited about getting cars off the road. Given that the conference has a big focus on communication between cars this year, it's no surprise that Ford talked about his company's work on that front. He's looking at the long term, though, and says that despite announcements like the one General Motors made yesterday about Super Cruise, when fully autonomous vehicles get here, it won't be headline news since the ground work is being laid by technologies coming to cars in bits and pieces now. In other words, your adaptive cruise control is getting ready for bigger and better things. "My fear is that we electrify the fleet and our impact is not what it could be." – Bill Ford On the zero-emission vehicle front, Ford said that while he's in favor of electric vehicles, "My fear is that we electrify the fleet and our impact is not what it could be." He was discussing the emissions reality of coal-powered electricity, and said that, "We've got to have a national discussion about what we want our grid to look like." As for the work that Ford is doing with Zipcar (which is just one of the many automaker carsharing operations out there today), Ford said that he first approached Zipcar CEO Scott Griffith after hearing Griffith talk at a green conference four or five years ago. Griffith was surprised, Ford said, because he had just given a talk about ways to reduce car ownership. "Did you hear my speech? I talked about taking cars off the road," Ford remembers Griffith saying. "Yeah, and what's going to happen without us," Ford responded. Today, the partnership allows Ford to get cars to people that have traditionally been "hard to reach," like college students on campuses. Ford's vehicles are currently available on 250 colleges campuses. Ford then spoke favorably about other challenges to the traditional car ownership model, like Lyft and Relay Rides. "Rather than being frightened by that, we need embrace it and help makes their companies better," he said.

Which is more fuel efficient, driving with a pickup's tailgate up or down?

Thanks to the smoke wand in the wind tunnel, you can actually see the difference in our video.
Should you drive with your pickup truck's tailgate up or down? It's an age-old controversy that's divided drivers for decades. Traditionalists will swear you should leave the tailgate down. Makes sense, right? It would seem to let the air flow more cleanly over the body and through the bed. But there's also a school of thought that argues trucks are designed to look and operate in a specific manner, and modern design techniques can help channel the airflow properly. So don't mess with all of that: Leave the tailgate up.