What does Cómo anda mean?

It's a question about a piece of machinery or other moving equipment, such as a car. It means, "How is it running?" In this context, a description of it's current operating characteristics should follow: "It's cutting out intermittently." "Smooth" "No problems." "Rough." Depending on the context, it can also mean, "How does it run?" You might expect a description of how the various motors, pulleys, belts, etc. produce work in the machine. Also, depending once again on the context, it can be a social inquiry into a person's well being; "How are you? How's it going?"