Check Engine Light

I HAVE A AURORA 1995 WHEN I START THE CAR UP MY CHECK ENGINE LIGHT IS ON. WHEN ITS ON THE CAR SPEED HAND DONT WORK AND WHEN IT CHANGE GEARS IT JERK A LITTLE AND WHEN I PUT IT IN REVERSE IT JERK. BUT TODAY WHEN I WAS DRIVING, THE CHECK ENGINE LIGHT WENT OFF AND EVERYTHING GOT TO WORKING INCLUDING THE SPEED METER FOR A MINUTE OR TWO, THEN THE CHECK ENGINE LIGHT STARTED TO FLASH ON AND OFF WHICH WAS CAUSING THE CAR TO MISS FIRE AND A WHITE COLOR SMOKE IS COMING OUT OF THE EXHAUST AND WAS STALLING AND WHEN YOU TURN IT OFF ITS A CLIPPING NOISE FROM THE PETAL AND UNDER THE HOOD

NEED HELP:banghead:

Welcome to AF. I,ll say, the white smoke is serious, get it to someone and have it checked out for possible head gasket issues and have the cel codes read.