Auto blog

NHTSA closes Ford F-150 EcoBoost acceleration probe

Typically when we report on the findings of an investigation from the National Highway Traffic Safety Administration, it's because the government body has discovered a safety issue and prescribed a recall. In this case, however, NHTSA has closed an investigation into a reported performance deficit without ever getting to the recall stage.
The issue revolves around the Ford F-150 - specifically those equipped with the 3.5-liter EcoBoost engine - of which some 360,000 were built in the 2011, 2012 and 2013 model years. After receiving an initial 95 complaints, NHTSA opened an investigation last May - almost a year ago - into the reported issue of reduced engine power under hard acceleration. The agency has since received a total of 525 such complaints, and Ford itself reported receiving over 4,000.
Together, NHTSA and Ford determined that the problem resulted from cylinders misfiring, an issue itself stemming from water getting into the charge air cooler (CAC) mated to the turbochargers. In particularly humid or rainy conditions, water was found to get into the CAC, causing some of the cylinders to misfire, which in turn triggered the ECU to disable those cylinders in order to protect the catalytic converter from damage.

Submit your questions for Autoblog Podcast #329 LIVE!

We're set to record Autoblog Podcast #329 tonight, and you can drop us your questions and comments via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #329
Subcompact sales slump, yet again

With contract expiration days away, UAW targets GM first for negotiations

The United Auto Workers union on Tuesday said that it would target General Motors as the first of the Detroit automakers for talks ahead of the current four-year contract's expiration on Sept. 14. This year's contract talks between the union and GM, Ford and Fiat Chrysler Automobiles NV are expected to be contentious as U.S. new vehicle sales are slowing and automakers face rising costs associated with the development of electric vehicles and self-driving cars. Rising healthcare costs, job security, profit sharing and the use of temporary workers are expected to be major sticking points. GM in particular has been a target of union ire since announcing the closure of five North American plants late last year. That move drew a wave of criticism, including from U.S. President Donald Trump. Trump has repeatedly prodded GM and last week said the No. 1 U.S. automaker should begin moving its operations in China back to the United States. "We are prepared and we are all ready to stand up for our members, our communities and our manufacturing future," UAW President Gary Jones said in a statement. In a statement, GM said, "We look forward to having constructive discussions with the UAW on reaching an agreement that builds a strong future for our employees and our business." The contracts come at a difficult time for the UAW, as a federal corruption investigation into the union continues to grow. Last week, the FBI conducted searches at Jones' home, a union retreat and multiple other locations, including the home of the union's previous president, Dennis Williams. To date, seven people linked to the union and the automaker have been sentenced in the government's corruption investigation. Reporting by Nick Carey.