Replacement of the thermostat?

That is great that you got that figured out. Thanks for the update.

Here is a guide that will help with this type of noise but we need to get a new post started for a noise:

https://www.2carpros.com/articles/whirring-sound

The reason we need to get a new post started is because others will not find the solution under the thermostat heading.

https://www.2carpros.com/questions/new

Thanks