Product review (5 stars): Much like other posts
I replaced the actuator (speed sensor) on a Whirlpool Cabrio model #WTW5640XW2 washer machine. Much like other posts, the washer machines wash basket would not spin and the Lid Lock light would not illuminate while the spin cycle was active. I wasn't aware anything was wrong with the washer until I started smelling a foul odor coming from the machines basket, and eventually learned the basket would not spin while the spin cycle was active (idle water caused the odor). The actuator is secured by two screws at the base on the basket, so all I had to do was tip the washer machine back to access the actuator, which took about 10 minutes to replace (be sure to unplug machine first). Since replacing the actuator (about four months ago), the smell has gone away and haven't had any issues with the spin cycle.

Trouble codes from the onboard computer determined the actuator was having issues. There is a tech manual located behind the front panel of the washer machine (the back-side of the front panel adjacent to the wash basket on the inside of the machine). The tech manual will tell you how to pull trouble codes and even test washer components. I mention the tech manual because several people posted questions about what their particular trouble codes meant. Trouble codes are specific to each model so the only way to answer these types of questions is if someone has the same model and a copy of the tech manual. Just FYI.