Ive replaced the blower motor and switch recently. When I turn the dial up to increase the air flow, i can hear air increasing but not much from the vents.
On high, it feels like low air flow. All vents feel equal in the amount of air coming out.

My thought is the blender doors? any other ideas?

 

i remember hearing something about the little door that opens to let air into the vents. i dont remember if it was dodge or ford or chevy but its worth a shot. if its not the motor and its not the switch, it has to be something in the duct work.

 

Yep, recirculating door broke. Remove blower motor and reach up in there and you'll feel the door laying over the hole. I just threw the door away since I never use recirculate anyway. I think there is an aftermarket fix if you want it.

 

That's exactly what it was thankfully! It must have always been broke and just recently obstructed more. Because its never worked this good in the years I've owned it!