My ac a few months ago stopped blowing all speeds. I only have the 2nd and 4th one. Anybody had this problem? A friend of mine said it could be a sensor switch? On the bright side I have AC but dont like the fact that I can only get two speeds. Thanks

 

Could be your resistor board as well located in the fan plenum which actually controls the speed of the fan.

The wire for the blower motor go to it and I think it just snaps into place so it can be easily removed.

 

Here: https://www.cobaltss.net/forums/how-...-1-3-a-264603/