rite the first thing you need to do is make sure the motor is running. remove the wiper arms and the scuttle. inspect the motor while the wiper are set to speed two. you may find that one of the linkages is broken or just popped off. if its the latter then a plastic bag can be used as a temp fix. cut a small peice of plastic bag and place between the ball and socket when fitting if this dont work post more info and ill try n help
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cars.