Mitsubishi Repair: Check Engine Light, oxygen sensor, negative cable

Question
My check engine light is on.I was told to replace my Oxygen Sensor which I did; but the light is still on and now when I am @ a light the car vibrate.  

Answer
To get the light to shut off, take the negative cable off the battery for 5 minutes or longer; that should take care of the engine light. Unless some other sensor is bad. With the vibrating at a light, could be your time is off. You did not explain what engine you have. Auto or stick. Could be the vibrates is from yet another sensor that is weak or going out. Or it could be from the timing. Hope this helps and good luck!