I have a 99 as well that began moosing at around 40K, it was an early 99 though, #147. It just started when it was cool outside until the car was warm. I think this is a coomon thing that 'just happens'. I was under extended warranty so I had Ford fix it, and it has not done it since, 52K now. Not sure why it starts but it seems to be the conundrum called Contour. Good luck in putting the moose to bed.
