Why doesn't air come out of my air vents from my 2004 ford Taurus! His can I fix it?

Why doesn't air come out of my air vents from my 2004 ford Taurus! His can I fix it?!

Check fuses, blower motor, cabin filter, switch on the dash, vent flaps may be closed?

Can you hear the fan running? If not, the blower motor fuse, relay, resistor pack, or blower motor is suspect. If the fan is running, look under the hood on the passenger side at firewall to see if a vacuum hose is running through the firewall. If so, make sure that hose isn't leaking and that its getting vacuum through it.It supplies vacuum to vacuum motor under the dash(may be behind glovebox)The doors that open to route heat/ac through the defrost, floor, and vents are controlled by vacuum motors and there may also be a actuator too which is operated electrically. If vacuum isn't applied to the right vacuum motor, that door won't open. If you hear any hissing noises under the dash, find the vacuum hose and vacuum motor that controls the vent door and see if one of those components are leaking or if the vacuum motor is defective. You may be able to find vacuum diagrams below.
http://www.autozone.com/...3f8036e081

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