Ford started using electronic throttle bodies (ETB) in the late 1980s and early 1990s, but the exact year varies greatly depending on the model and engine. There wasn't a single year where all Fords switched; it was a gradual transition. Some older models continued to use cable-operated throttle systems well into the 1990s.
To find out if a *specific* Ford vehicle used an ETB, you need to know the year, make, model, and engine. Then you can consult a repair manual or online resources specific to that vehicle.