> HELP!!  My 1984 1.9l Westy van (with manual steering and transmmission,
> Michelin Agilis tires and 177,000 miles) has a problem. Whenever I drive
at
> highway speeds (between 50 and 62 MPH), I notice that the fresh air vents
> don't blow air when they are turned off.

Steve,

I would suggest a tire alignment.  At the least check your timing.  A brake
adjustment helped when I had a similar problem, but I noticed that air flow
increases when I pull up on the emergency brake handle violently, especially
at speeds above 90 MPH when not wearing a seatbelt.

Hope this helps,

Chris.