I had an air bubble in my cooling system when i changed my water pump to the metal impellar. It was in the sensor which made the low coolant light come on and stay on so i was kinda worried about it. I called ford and asked them the best way to go about getting it out. he told me to elevate the front end by ramps or something like that and letting the car run until the coolant level in the resivoir (dont think i spelled it right) dropped, then to refill whatever was lost. Just something to consider.
