I figured this might be a problem that many 96-98 Mustangs have. Pretty much, lately, my speedo has been getting lazy. Like the speedo won't move until I'm going like 20mph, and then it starts to move. So when it shows 10mph, I am actually going about 30mph. Also, after I am moving at 40mph, it then becomes accurate again and shows the correct speed at anything over 40mph. I have stock rear gears so I was wondering if I can get any input about this problem. I did a quick search on the forums and google, and the only speedo problems I see is people trying to calibrate their speedo because they installed aftermarket gears, however, this is not the case for me. Any thoughts or ideas?