On my way home I took a left turn and the TCS Off light came on. It has happend once or twice before but its when I first start the car. Further down the road I noticed my tach reads 0. I get the car home and shut it off then start it back up again and the TCS Off light wasnt on and the tach moved normally while the car was running. Whats up with that? I have a 2000 GTP