My car doesn,t want to start sometimes. Engine light code says ect sensor and rear o2 sensor. When i push the gas pedal all the way to the floor the car will sputter and start. Is this ect sensor a common problem and is replacing it the answer or what else could it be. Please any help or sugestions

If the ect sensor is the coolant temp. sensor, then yes this could be your problem. Pretty cheap too, so if that isn't the problem then it is only $30 wasted.