Horrible Clicking Sound in Air System

Plymouth 340 said
Well i could go and rip all the vacuum stuff out and replace it and see if it helps...

There isn't any "vacuum stuff" to rip out. It's all electronic.

There are three different actuators: 1 for the blend(temperature), 1 for mode(where the air comes out at) and 1 for recirculation or fresh air.

If it isn't the fan itself then it could be one of the actuators failing. They have gear teeth on them. You need to get your ear up to it and listen.

The one for the mode is far left by driver's foot, the blend is behind the ashtray area, and the recirc is up top under the top of the dash.