The actuators are controlled by vacuum. Go over all your work for the radiator and see if you disturbed something in the vacuum system on the engine.
I attached a vacuum diagram for you to view. Check the source tank for the main vacuum into the control head.
I attached the location of the tank for you. With the engine running, you should have vacuum on one of the hoses from the motor.
1. Remove the right and left instrument panel insulators.
2. Disconnect the vacuum hoses from the vacuum tank.
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3. Remove the mounting screws that secure the vacuum tank to the blower case.
4. Remove the tank.
Images (Click to enlarge)
Tuesday, May 12th, 2020 AT 3:58 PM