Grand Prix 250
Main Motorcycle: 2002 Sprint RS 955i
Join Date: Oct 2012
Location: Port Aransas Texas
Try putting a charge on your battery
My '02 Sprint RS has the flaky speedo issue, which in some cases is due to a very slightly low volt condition at the battery. In my case the charging system is fine, the battery always has plenty of juice to crank the engine, and never measures below 12.5 volts, but the speedo will read 0mph. I unplug my headlights and run the motor for a few minutes, restart and have a working speedo again. Early versions of the ECU program had the speedo stop working when the battery was low, I just programmed a newer EFI map that has the speedo/low battery function removed, but haven't had a chance to test it thoroughly yet to see if that fixed my problem. Good luck!