Congrats! You found your issue. 80 mil is in the normal range for your car. If you just want to be sure, you could plug FSU back in and repeat.
When you personally have an issue with your car, I'm always "here" for someone who has given so much for the rest of us. Thanks and glad you have solved your issue. You can drive with the FSU pulled, but you won't have any heat or cool as the fan won't run.