How do i know which speed sensor needs replaced.

What is your question?

How do i know which speed sensor needs replaced on my 2002 vw beetle 1.8L turbo. Drives with high rpm's and wont shift to 3rd or 4th.

How long has your 2002 Volkswagen Beetle had this problem?

I just bought the car. Was told to replace speed sensor. Then it should pass smog