Has anyone every had their Speedometer go out. While traveling yesterday I noticed my guage read 110mph then 30, 40 and finally 0 all the while I was doing an estimated 60 MPH. It now remains at 0 no matter what speed I drive. My first thought is a faulty speed sensor since it is the original that I had on the car when first purchased 12/90. It is a 91 coupe. just wondering if anyone out there has had this experience.