Hey every one my first post here. I need some advice on diagnosing an A\C problem

What happens is the ac runs for a while then it stops blowing. you can year the motor moving to turn the fan but there is no air moving though the car.

any ideas??

thanks and sorry for the spelling i am horrible at it

 

could be a number of problems, one could be the evap temp sensor failing and causing the evap to freeze, when it quits you might want to pull the motor and make sure the hampster cage is turning with the motor.