'02 Taurus here at 111k miles, and I have what I'm interpreting to be either a failing blower motor or a loose electrical connection at the motor. For the past week or so when I turn the climate control mode selection dial to any selection, no air comes from the vents. When the mode **** is turned, everything else seems to be happening...flap doors are heard moving inside the dash, and the compressor clutch engages if the A/C is selected, but no air movement. After 3-4 days of this the blower suddenly works again and stays working for as long as the engine remains on, turning climate control on and off when needed. But the next time the car is driven the blower doesn't work. The blower motor itself seems fine in that it doesn't sound like it has a problem starting up with a slow whir or anything. It sounds completely normal when running. This is why I think it might just be a loose electrical connection at the motor, but I really have no idea, or not much experience dealing with this particular issue.

Any advice on what I should check or test?

I'm all ears, thanks!

And a very Merry Christmas to everyone!