[sherwood203]

I had the same problem on my 98 - it turned out to be a small hole in the vacuum hose going into the firewall from the engine. No vacuum, no control of the flaps. Find the small vacuum hose that enters the interior thru the firewall on the passenger side of the car and follow it back all the way to the connection to the intake manifold. My guess is there is a crack or hole somewhere. Good luck.