I did a bunch-o-stuff to my car including gears which made me remover the VSS or vehicle speed sensor to pull and swap those cheap plastic gears for odometer correction. My car throws the VSS code at idle? The odometer works perfect (only 3mph off at 65) I don't undersatnd the problem. There is a two prong plug on the front of the tranny almost looks like a ground plug that I had removed and put back on as well for my clutch. Could there be a bad ground and my speedo still work???? Thanks