What would cause the air to stop on a 1998 ford contour?

First off what "air" has exactly stoped? If you are talking about the blower for your a/c, heater, etc.. This should still be under recall. I would take it in and have the shop replace it. That is what I had to do with mine. Less headache that way. For some unknown reason ford thought it funny or something to have those fans fail right when you need them the most. The other side of that coin is also it sometimes shorts out per what I was told and therefor ford put a recall in the heater, a/c fan.