I have 1993 STS and getting trouble for speed.My Cad is running normally but the speed indicator is not passing over 60 miles in the cluster. I have changed Vehicle speed sensor and Chamshaft position sensor. Also all wires are new and good pısition. Also all indicators in the Cluster are working normally. But, the speed indicator doesn’t show the real speed. It is not passing 60 miles never. I need your kindly helps If you can do it for me.