This link shows my Volvo 850 Turbo dash. Notice that the speedometer quickly rises to 45-50mph, yet the car is only actually traveling at 20-25mph. https://youtu.be/0HymqKHvqfQ This link will show the speedometer slowly return to zero mph, even though the car comes to a full stop. https://youtu.be/C...

Hello to all, this is my first post. I have a '95 850 turbo. The speedometer will not register above 45-50mph and will slowly return to zero once the car comes to a complete stop. As soon as I accelerate from a dead stop, the speedo will quickly move to ~50mph on the gauge, but no higher. When I pur...