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All these things are vacuum actuated and must have vacuum thru the lines to make the blend doors/flaps work properly to make the air go where you wish it to go. Check that all vacuum lines are connected to these actuators properly and that they are getting vacuum to them from the control panel. Vacuum to control panel must come from the engine to a reservoir, a black plastic ball on the passenger side at firewall under hood and from reservoir thru firewall to control panel. Check that you have vacuum at all connections.
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