2000 Mercury Grand Marquis Ls Sedan 4-door 4.6l on 2040-cars

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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.

Junkyard Gem: 1993 Mercury Topaz GS Sedan

As long as the Mercury brand existed — a period spanning the 1939 through 2011 model years — nearly every Mercury sold in the United States was more or less a redecorated Ford model. The Torino had its Montego sibling, the Crown Victoria had the Grand Marquis, the Cougar was based on everything from the Mustang to the Mondeo, and so on. Naturally, when the folks in Dearborn developed the Ford Tempo compact, a Mercury version had to be created. This was the Topaz, with the official launch of both cars taking place on the deck of the aircraft carrier often referred to as the USS Decrepit. You can't make this stuff up! The Tempo/Topaz, also known as the Tempaz, has largely faded from our collective automotive memory by now, since it broke no significant new engineering or styling ground (this story would be much different if Ford had only put the amazing straight-eight "T-Drive" Tempaz powertrain into production) and didn't have any endearing features other than being a cheap domestic competitor to the Toyota Corolla and Nissan Sentra. Still, close to 3 million Tempazes left North American Ford and Lincoln-Mercury showrooms during the 1984-1994 period. As you'd expect, most of these disposable cars disappeared from both the street and the car graveyard long ago. It takes a very special Tempaz for me to break out my camera while I'm patrolling my local wrecking yards; generally, this means an ultra-rare all-wheel-drive version or at least a very early model in super-clean condition. Today's Junkyard Gem is neither, but I took one look at this spectacular Bordello Red crypto-velour-and-slippery-plastic interior and recognized that this was no ordinary junkyard Mercury. It appears that Mercury had dropped the idea of clever names for base-grade seat fabrics by the time of the Topaz, referring to this stuff as just "cloth" in all the brochures I could find. That's too bad, because Mercurys had cool names for upholstery (e.g., Chromatex) in the old days. The interior is in very good condition but the steering wheel shows substantial wear, so I think this is a high-mile Topaz that got meticulous care from its owner or owners. Ford used five-digit odometers on these cars until the end of production, however, so we'll never know if this reading indicates 65,404 miles or 365,404 miles. The body is very straight, but there's some nasty corrosion behind the right front wheelwell.

NHTSA investigating Ford's solution to May 2014 power steering recall

The National Highway Traffic Safety Administration is investigating a complaint that Ford's response to a May 2014 recall of the 2008 to 2011 Ford Escape and Mercury Mariner doesn't quite go far enough to solve a troubling power-steering problem. Roughly a year ago, Ford recalled nearly a million vehicles after it was found that a problem with the torque sensor's communication with the power steering control module could cut steering assistance for drivers. While manual steering would still be available, the problem was enough to ask drivers to report in to have the PSCM inspected, and if necessary, replaced (along with the torque sensor, or in dramatic cases, the entire steering column). That would only happen, though, if trouble codes were being thrown. If there weren't any problems, dealers were told to simply update the PSCM's software so that any issues between it and the torque sensor would simply throw a visual and audio warning – power steering would still be maintained. The petitioner claimed that following the recall work, he still experienced a problem with the torque sensor. According to NHTSA, a claim was made that Ford didn't go far enough in its solution to the problem, and that "the software update itself may in fact cause further issues with the affected vehicle's power steering, causing it to fail, and ultimately requiring replacement of the torque sensor or entire steering column." The petition was filed in early February and is now officially being looked into by NHTSA.