2007 Mercury Grand Marquis Gs Sedan 4-door 4.6l on 2040-cars

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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 recalls 600,000 older-model sedans for braking issue

Ford is recalling 600,166 older-model Ford, Lincoln and Mercury vehicles over an issue that could affect braking and increase the risk of a crash. The safety recall covers certain Ford Fusion, Mercury Milan and Lincoln MKZ sedans from the 2006 through 2010 model years that were built at Ford’s Hermosillo Assembly Plant in Mexico between Feb. 22, 2006, and July 15, 2009. Ford says a valve that is normally closed inside the hydraulic control unit may get stuck in the open position or be slow to close, which could make it harder to engage the brakes and increase risk of a crash. Ford says itÂ’s aware of 15 reports of accidents and two injuries possibly related to the issue. Dealers will inspect the hydraulic control unit for signs of the problem and replace it, if necessary. The dealers will pressure-flush the system with brake fluid and replace the reservoir cap with a new one. Ford is also issuing a small recall of 33 of its 2020 F-150 trucks in the U.S. and 51 in Canada over potentially damaged spare tires. It says the bead area on the tires may have been damaged when it was mounted onto the wheel assembly, leaving it vulnerable to corrosion, separation of the bead wire and ultimately a rapid loss of air pressure and detachment from the wheel. Dealers will replace the spare tire. Affected vehicles were built at the Dearborn Truck Plant from Nov. 10-21 of this year.

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.