Blower motor?
 

Does the blower motor under the glove box control both AC and heat? What does the FSU or (blower regulator controller) do? Does the FSU only control the AC side of air speed?

Just a few questions that I've tried to look up. I've seen post on how to replace the controller/motor but not really a clear explanation on what the symptoms are other than the motor stopping.

Thanks

These are the symptoms-motor has inconsistent speed or no speed at all. The motor blows any air that goes in the cabin, hot or cold. Blower motor regulator controls the speed of the motor. If you have no AC or heat look further.

I have both but at times, I feel like the motor makes sound and the air turns off for a second then turns back on. At that point no air flow. I also feel like the air flow is not that strong anymore. Question is, do I replace the motor or the controller?

Controller. And the cabin filter too.

S the cabin air filter down under there also?

In the rear passenger side of the engine compartment.

Thanks for all your help. Dealer changed those out about 7 months ago! Hopefully all good

I feel like my air flow with the AC slows down more than the heat. Is that a symptom?