When running the air conditioning, I get no airflow through the dash vents - it blows out the defrost outlets instead. (Moving the dial to "bi-level" leads to air coming from floor and defrost outlets - same as using the heat-def position.) Is the blender door controlled with electricity instead of the vacuum system? The vacuum label under the hood doesn't show a hookup (unlike my '95 Dakota). This van has been unused for years, and I had to replace spark-plug wires that critters found tasty. While looking for troubles, I found the wires to the master cylinder sending unit got chewed, too. I have gotten the van running and driving, though.