OK, a rapid vibration, right?
I remember back in my early days with an Edge, people were complaining about a "tranny shudder" and this was something that Edge cured with a firmware or calibration update (I can't remember which). I never got it, so I sort of forgot about it when people stopped complaining. This new one sounds like it's somewhat related (to me at least). I'm sure Bill will be able to figure out how to cure it.
It's hard for me to visualize anything in the powertrain that would suddenly start "vibrating" at given speeds though. An effect like that is usually a harmonic feedback from something that's out of balance.
- Jack
|