So at some point the rpm will catch up and meet with the speed. When I drive, around 60mph the rpm is at 3500. At 55mph it’s at 3000 rpm. At 45mph it’s at 2500 rpm. Etc.
Here’s a link to the video
It gives me a p0171 code. Which means oxygen bank 1 too lean. But could it have a faulty transmission?
Ford focus 2010 automatic transmission