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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.

Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.

Ford recalls over 953,000 vehicles to replace Takata airbag inflators

DETROIT — Ford is recalling more than 953,000 vehicles worldwide to replace Takata passenger airbag inflators that can explode and hurl shrapnel. The move includes over 782,000 vehicles in the U.S. and is part of the largest series of recalls in U.S. history. Included are the 2010 Ford Edge and Lincoln MKX, the 2010 and 2011 Ford Ranger, the 2010 to 2012 Ford Fusion and Lincoln MKZ, the 2010 and 2011 Mercury Milan, and the 2010 to 2014 Ford Mustang. Some of the recalls may be limited to specific geographic areas of the U.S. Takata used the chemical ammonium nitrate to create an explosion to inflate airbags. But it can deteriorate over time due to heat and humidity and explode with too much force, blowing apart a metal canister designed to contain the explosion. At least 23 people have been killed worldwide and hundreds injured by the inflators. Ford says it doesn't know of any injuries in vehicles included in this recall. Dealers will replace the inflators. Ford will notify owners about the recall starting on Feb. 18, and the company has replacement parts available for dealers to order, said spokeswoman Monique Brentley. In previous Takata recalls, parts availability had been an issue. Owners can go to this Ford website and key in their vehicle identification number to see if their cars and SUVs are being recalled. The same information will be available soon at the NHTSA recall website. More than three years after the U.S. National Highway Traffic Safety Administration took over management of recalls involving Takata inflators, one third of the recalled inflators still have not been replaced, according to an annual report from the government and a court-appointed monitor. The report says 16.7 million faulty inflators out of 50 million under recall have yet to be replaced. And 10 million more inflators are scheduled to be recalled this month, including the Ford vehicles. Safety advocates said the completion rate should be far higher given the danger associated with the inflators. The recalls forced Takata of Japan to seek bankruptcy protection and sell most of its assets to pay for the fixes. The inflators grow more dangerous as they get older because ammonium nitrate deteriorates due to high humidity and cycles from hot temperatures to cold. The most dangerous inflators are in areas of the South along the Gulf of Mexico that have high humidity. Related Video: