Took the Sky for a ride this afternoon. Stopped at a friend's house and upon leaving the Sky had almost no power. Light in dash showed engine outline and message read something like "eng pwr reduced". Motor sounded OK but it had very little power and I basically had to shift motor to L then up to I then to 4 etc. to get it to move down the road. It would slowly rev to 4000 then I'd shift to next gear and all the while with very little power. Any ideas as to the problem? Motor has 26,000 miles and never had any problems before..