Air conditioning fan runs but doesn't blow out the vents

That's what I'm saying. It's still blowing just not out the vents. It sounds like it's blowing into the dash or something. What could cause this and how do I fix it????

I need to know IF it is blowing out of the defroster vents .. Then I can tell how to fix it!!!! .. Put your hand up there and see!

Not much if any

Find and repair the vacuum leak under hood on passenger side .. Small plastic vacuum tubing broken or un-hooked. Mode selector is vacuum actuated.

Thanks I'll try to find it

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Can not find a vacuum line no where on the passenger side

It will be a small 3/16 plastic tubing going into the firewall on passenger side.

I don't see anything like that. All I see on the passenger side is the heater core lines going through the firewall Could it be unhooked????

All I can tell you is there 'IS' a vacuum line that goes from the engines intake manifold into the inside of the car that supplies vacuum to the heater/AC air mode selector .. For what ever reason there is no vacuum being feed to the control.. Now whether it's broken, unhooked or missing I can't say.. Look for a vacuum hose routing diagram decal under the hood, maybe that will help.