2000 Ford Windstar vacume leak?

I have the same problemwith my 2003
did you resolve your's?
On the vacuum diagram there is a vacuum resevoir and a check valve, maybe the check valve is plugged
i dont know where in the vehicle it is located tho, do you?

Yes I did solve the issue with the heater controls
in the back of the engine compartment on the left sibe in the back-behind the intake manifold plenum there was a small red vacume hose. It plugs into the upper intale manifold and then connects to a t where a black vac hose goes into the firewallthe res hose was cracked right off I got a small peice of rubber hose and some tape and I patched them back together and then like magic the selector switch worked and is still working

Thanks for the info danny, i'll check there tomorrow and let you know
thanks again
steve