Why is my car shaking when been driven?
I HAVE A NISSAN ALTIMA 2002 3.5 MOTOR ITS BEEN ALMOST A MONTH SINCE IT STARTED SHAKING WHEN BEEN DRIVEN AT A LOW PACE AND WHEN I GO MORE THAN 40 MPH THE CHECK ENGINE LIGHT TURNS ON, i JUST BOUGH THE CAR 3 MONTHS AGO AND WAS PERFECT..ANY SUGGESTIONS?