After fuel injection cleaning, car drives with hesitation and shakes as if its going to stop. Check engine light is on -- scanner indicated sensor in exhaust. Used premium gas hoping that would stop the shaking -- no such luck. Would this be the o2 sensor? And does it cause the car to behave that way because of the o2 sensor? Or is this something else entirely. All I know is once they used the fuel injection cleaner, problems began to occur.
Thursday, June 7th, 2012 AT 3:42 PM