First let me say god bless you guys for posting the info on how to plug up the
yellow hose under the dash. I did this and everything is working
fine again (this has saved me a $1000USD). I do however have one last question
When I plugged up the yellow hose I also plugged up the connector on the
vaccum where the yellow hose was originally connected. Is this a good idea?? Will
it cause further damage over the long run??

By the way if I have the recirc button pressed in I still lose the air pressure
through the vents (when accelerating) even with the yellow hose plugged up.
Could this mean that my problem might be related to a faulty check valve or
a one way valve, and not the vacuum motor under the dash??

Thanks in advance-