Happened to me just one time. Out of the blue, the bike started running at 3000 revs - wouldn't drop below that. Stopped bike, turned it off. Waited a while, then turned it on again (works with computers, I thought - why not a bike?).
Anyway, it was OK from then on - back to normal.
That was a couple of months ago, just before my tps went crook.
No idea whether that is connected or not.
