My 2000 Odyssey started making some deep/low humming/vibration sound that is directly related to the AC fan. It's summer in Phoenix, and that means AC is mandatory, and I'm concerned about this new noise.

It is definitely fan speed related, as with each higher fan setting, the humming gets louder and faster.

Does anyone have an idea of what might be wrong?

Thanks.

 

Bad heater/blower fan. Had the same thing in my wife's Civic. Fast, cheap and easy to fix yourself! Three bolts and that's it - you'll just have to scrunch a bit to get under the glove box area, probably.

http://www.youtube.com/watch?v=Ntc6y4SyMQE

 

Thanks. Now something is wrong with my PC, as I have no audio to listen to the video. I'll try another computer later. I really appreciate your assistance.

I got it to work, so it looks like I can do this myself, once I get the part and maybe a new tool, like the flex head.