[sheepgirl2009]

I'm looking for the name of this movie. I want to say it's a early 90's or maybe a late 80's movie. All I can remember about it is they have this family (mom,dad,son)
The dad has some kind of mechanical part to a engine of some sort and the bad guys come and kill the dad and they are looking for this part but they can't find it. The part is for something that went wrong on an operation and the bad guys want it so they don't get in trouble. And I remember the mom and the little boy are always running from these people cause they are trying to kill them. And the little boy has the mechanical part on the leg part of his transformer looking toy. Please help!! And also the little boy doesn't talk because all this happened. But I think at the end of the movie he finally talks.