The 2006 Ford Expedition has single overhead cam (SOHC).
The 2006 Ford Mustang has single overhead cam (SOHC).
The 2006 Ford Fusion has double overhead cam (DOHC).
The 2006 Ford Explorer has single overhead cam (SOHC).
The 2006 Ford Escape has double overhead cam (DOHC).
The 2006 Ford Focus has double overhead cam (DOHC).
The 2006 Ford Taurus has overhead valves (OHV).
The 2006 Ford F-250-Super-DUTY has single overhead cam (SOHC).
The 2006 Ford F-350-Super-DUTY has single overhead cam (SOHC).
Research associated engine problems.
OOPS! The cam sensor is on the front of the head, where it's safe and where you can change it easily !
The 2013 Ford Fusion has double overhead cam (DOHC).