I was riding today and could tell by wind and engine speed, I was doing at least 40 MPH. I looked down and speedo read less than thirty. Acceled and deceled several times and it was obvious the speedo was not moving as rapidly as it should have been. After cutting the bike off and then back on again later, it corrected itself. I've seen some speedo issues on here, but nothing quite like this, and it's not the first time it's happened. Anyone else experience this? BTW, odometer was functioning properly the whole time (as far as I could tell).

 

Hi, Not sure if it would help, but I recall reading of someone having speedo issues do to a loose neg battery connection. Someplace to look anyway.........WVleo

 

Yeah, mine does that every once in a while after I wash it. I just ride for a little while to get the water out of the neck & wiring areas, and then pull over to shut it down & refire.....That always fixes it.

 

im having the same problem too...on the way home from work today it was reading 90mph and i clearly wasnt doing 90. It will under-read as well, but most days it works fine. Im gonna take a look at the neg battery cable....

 

Thanks guys, will try those suggestions.