My car shakes every now and then & I was told it could be the 02 sensor or maybe even the gas cap since I have a key safe gas cap but I don't kno I Just bought the car & can't afford 2 waste my money please help me out
If the car shakes then it cold be an engine problem or a motor mount. Not an O2 sensor. It will turn the service engine light on if a sensor or connection is bad. Most auto parts stores can scan for free to get a code.