Originally Posted by
Myopic
I briefly visited an auto electrician's workshop, who initially determined that there were various air conditioning flaps in that area, and that those might be the problem.
The electrician said he'd have to disassemble the center console and check.
You might want to check the vacuum line from the intake manifold to the AC. Make sure it's not leaking as that could cause the flaps to behave erratically.
vacuum line marked in red under the mass air flow sensor