On my last 2 rides the limited engine performance message comes on on the left hand side of the dash and the engine won't go above 3500 rpm's . The circumstances are that it occurred under hard acceleration . There are no lights on the dash and both times I shut the car of and restarted it and everything was fine. The reason I'm soliciting opinions on this is before I have it checked out is that I want to make sure it is nothing that I am inadvertently doing while driving or shifting etc. to cause this concern . Thoughts ??