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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.

Junkyard Gem: 1995 Mercury Tracer Trio

With the rise of Radwood, cars with exaggerated characteristics associated with the 1980s and 1990s are cool again. That means some combination of pastel and/or neon colors, squiggly squeezed-from-toothpaste-tube graphics, nonfunctional decklid spoilers, giant TURBO badging, and kicky youth-centric nomenclature are required if you want your wheels to be considered in compliance with the sacred tenets of Radism. I do my best to find rad machinery while crawling around in car graveyards, and since I came of driving age in 1982 I know a bit about the subject. Today's rare Junkyard Gem shows us the Mercury Division's belated attempt to sell fun cars to rad-leaning youngsters: a Tracer Trio, found in a Denver yard a few weeks back. The Trio package added 310 bucks to the cost of the $11,280 base Tracer sedan (that's about $575 on a $20,925 car in 2022 dollars), and it got the hip-and-trendy young buyer a leather-wrapped steering wheel, seven-spoke wheels, a decklid spoiler and these rad fender badges. I'm going to say that the much louder graphics and candy-cane-colored displacement badges on the Pontiac Sunbird W25 out-radded the Tracer Trio by a mile, but then Pontiac generally out-radded everyone in those days. Even Plymouth got into the act with such radness as the Breeze Expresso and Sundance Duster (we'll overlook the anti-rad Horizon Miser here). Perhaps tellingly, Mercury, Pontiac and Plymouth all got the "Old Yeller" treatment not long after the Rad Era ended. The Tracer name always went on Mercuries built on Mazda platforms, starting with the Australia-built, Ford Laser-based 1987-1989 cars and then continuing with Mexico-assembled, Ford Escort-based 1991-1996 cars. That generation of Escort/Tracer was mechanical twins with the Mazda Protege, itself the bridge between the 323 and the Mazda3. Some Tracers got the a 1.8-liter Mazda engine that was related to the Miata's engine, but this one has the pure-Detroit CVH 1.9. You're looking at 88 horsepower right here; the Mazda 1.8 offered 127 horses. At least the original buyer of this car got the base five-speed manual transmission instead of forking over $815 extra (about $1,510 today) for the four-speed slushbox. As a 29-year-old slacker living in San Francisco's Mission District and driving a hooptie '65 Chevy Impala sedan at the time, I would have taken the manual transmission without the Trio package, had I been forced to buy a new Tracer.