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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.

NHTSA investigating 725k Ford, Mercury vehicles for stalling issue

Owners of Ford Escape, Mercury Mariner, Ford Fusion and Mercury Milan models, listen up. According to a report on Automotive News, the National Highway Traffic Safety Administration has opened an investigation into these four vehicles totaling an estimated 725,000 units. The investigation appears to center around a malfunctioning throttle body on non-hybrid models of the 2005-2012 Escape and 2011-2012 Fusion. With Mercury dying off after the 2011 model year, this probe will also apply to the 2005 through 2011 Mariner and the 2011 Milan. There has been some discussion around the Escape stalling issue for some time now, but this investigation appears to be larger in scope than before.
Though not a recall yet, NHTSA's Office of Defects Investigation (ODI) has received 123 complaints of stalling or surging vehicles, while Ford itself has logged 1,472 complaints. The investigation report, which is posted below, seems to indicate that a faulty circuit board for the throttle body could cause the vehicle to go into limp mode, which, according to NHTSA, could cause complaints of both stalling and surging.

Ford recalling 450,000 Fusion, Mercury Milan sedans

Ford has announced a pair of recalls, and both are critical safety issues. The exponentially larger of the two recall campaigns affects over 450,000 Ford Fusion and Mercury Milan sedans manufactured at the Hermosillo plant between July 21, 2008, and March 4, 2011. The canister purge valve in the fuel tank could malfunction and could cause the top of the tank to crack and leak fuel. That could cause a fire, although Ford "is not aware of any accidents, injuries or fires" resulting from the issue. Affected vehicles will have their ECU software updated and their fuel tanks inspected for potential replacement. The company estimates there are 411,205 affected units in the United States (and its federalized territories), plus another 33,605 in Canada, and 7,055 in Mexico. The second recall affects 13 F-650 trucks. The column shifter's park position mechanism may fracture and let the truck roll away unexpectedly. Those 2016 models built in Ohio between July 29 and September 3, 2015 are all located in the US. Fixing the problem will require replacing the steering column and reconfiguring the instrument panel. FORD ISSUES TWO SAFETY RECALLS IN NORTH AMERICA DEARBORN, Mich., Nov. 23, 2015 – Ford Motor Company is issuing two safety recalls in North America. Ford is not aware of any accidents, injuries or fires related to these conditions. Details are as follows: Ford issues safety recall for certain 2010-2011 Ford Fusion and Mercury Milan vehicles in North America for potential fuel tank issue Ford Motor Company is issuing a safety recall for approximately 450,000 2010-2011 Ford Fusion and Mercury Milan vehicles for a potential issue with the fuel tank. Some of these vehicles might have a canister purge valve that does not work properly, causing internal pressure changes inside the fuel tank. Repeated pressure changes inside the tank could result in a crack on the top of the tank, possibly allowing fuel to leak. A fuel leak in the presence of an ignition source can lead to a fire. Ford is not aware of any accidents, injuries or fires related to this condition. Affected vehicles include certain 2010-2011 Ford Fusion and Mercury Milan vehicles built at Hermosillo Assembly Plant from July 21, 2008 through March 4, 2011. There are a total of approximately 451,865 vehicles that might be affected in North America, including 411,205 vehicles in the United States and federalized territories, 33,605 in Canada and 7,055 in Mexico.