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NHTSA closes probes on Jeep Grand Cherokee, Ford Freestar and Mercury Monterey

The Detroit News reports the National Highway Traffic Safety Administration has officially closed its investigations into 2012 Jeep Grand Cherokee, 2004-2005 Ford Freestar and Mercury Monterey models. The separate probes found no issues that pose safety concerns. NHTSA began investigating certain Grand Cherokee SUVs over complaints that power steering hoses could detach during operation, thereby increasing the risk of a vehicle fire. Of the 24 reports of failure, none alleged smoke or fire in the engine bay, and Chrysler has since modified the power steering cooler assembly to reduce the likelihood of the failure.
Meanwhile, certain Ford Freestar and Mercury Monterey vehicles garnered a government probe after receiving complaints that the models were equipped with faulty scissor jacks. The agency had received six reports of the jacks failing or causing injuries, including one incident that resulted in a fatality. But NHTSA says the jack failure rate is similar to those found in other vehicles. In those six cases, the government agency found the jacks were being used for something other than changing a tire, and investigators could not determine whether the emergency brake was set or the rear tires were properly chocked.

Watch as an out-of-control car demolishes gas pump

A Baltimore area man was fighting for his life Tuesday after crashing his car into a gas station. According to WBAL, the unidentified 64-year-old lost control of his vehicle for unknown reasons around 4:55 a.m. May 1 in Parkville, Md. The 2007 Mercury Milan careened downhill, ramped over a curb, and smashed full-speed into a gas station pump. The car then flipped and came to rest against one of the station's canopy support pillars. Don Karbowniczek, owner of a service station across the street, told WBAL he was shocked there wasn't more damage. It's also surprising that the car even made it to the pumps, as it had to thread past a coin-op vacuum machine, the station's sign, a utility pole, and a traffic light pole. "It came right through, took some of our bushes out, just trimmed them for us, and how it got through and flip the way it did, I don't know. From what I see on the marks, it had to go airborne and just come down on the pump," Karbowniczek said. Thankfully there was no fire or explosion. Gas pumps have shear valves - safety devices that immediately cut the flow of gasoline when a pump is damaged. The driver was rushed to a hospital with life-threatening injuries, and was in critical condition. Police theorized the driver may have become stricken with a health issue when he lost control. Related Video: News Source: WBAL Auto News Mercury maryland gas station

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.