The U.S. authorities are investigating 725,000 vehicles Ford

The U.S. authorities announced that a survey will be launched relatively problems of choking engine and sudden acceleration involving nearly 725,000 cars and sport utility vehicles (SUV) manufacturer Ford.

The process initiated by the "National Highway Traffic Safety Administration" (NHTSA) is not a point but could carry.

The survey is the Ford Escape and Mercury Mariner SUVs and sedans intermediate Ford Fusion and Mercury Milan for years 2009, 2011.

These vehicles can fall almost inert at low revs. Nearly 1500 complaints were lodged at Ford and among the NHTSA. Three accidents, including one who causes injury would be attributable to this problem.

NHTSA began to address the problem after receiving a request to do so from a consumer protection agency in North Carolina.

The Fusion and Milan models are virtually identical and equipped with the same engine, just like the Escape and Mariner models. However, Ford has ceased the activities of its subsidiary Mercury in 2010.

The body of North Carolina said they received complaints about blocking the entry of fuel regulator, either open or closed position, causing problems with sudden acceleration or choking the engine.

According to the automaker, the vehicles manufactured between June and October 2009 could have a control circuit of faulty diet. Ford and its supplier have modified the process of making the system power in October 2009, which could have corrected the problem.

NHTSA, however, decided to institute an inquiry as it received complaints regarding the models of years 2010 and 2011. Not less than 80 per cent of complaints were received since March 2012, which demonstrated a strong upward trend .

In addition, Ford has received more than 27,500 warranty claims that relate to repairs or replacements supply system.