Product review (5 stars): Tub wasn't filling with water on any cycle
Maytag Centennial machine.  MVWC6ESWW1
I've only had the new part for several days but it is working great so far. My problem was the tub not filling at all with water although the spin cycles worked.

From reading comments here and elsewhere, this part is notorious for causing the following problems:

Tub not filling with water at all - spin cycles work
Incorrect water level
Agitator running while filling
Water temperature issues
'dumping' water during final spin

The part was very easy to remove and install.  Look at the youtube videos by part number (as many as you can) until you are confident.

Basically, it goes like this:
Unplug machine. Remove knob, lift up control panel.
Disconnect wire harnesses and the clear tube. Place your finger under the tab while pulling the tab toward you (away from the machine).
While holding the tab, turn switch counter clockwise until you can remove it. Install new switch in reverse order. You should hear it click into place.

If I run into any issues with the switch, I will post an update.

UPDATE:  After 6 months, washer is working fine.  No issues since installing this switch.