Gf was traveling, come up to stop light and said vehicle seemed like it wanted to die at complete stop. Pulled the code and was getting a p0303. Only fault code. Replaced plugs and no change. For further investigation I unplugged coil pack for number 3 and symptoms got worse. For the most part in my mind that would tell me coil pack is not the issue. As of this point and time I am at a loss. Symptoms upon vehicle operation are rough idle, power loss and a very noticable decrease in fuel economy. Also symptoms happened suddenly as vehicle was running good less then 24 hours prior. Suggestions to help point me in the direction would be great!