I also have 2004 Coupe. Mine has done that sevral times. It has even stalled out a couple of time at the light. Once the check engine light came on the went off the next day. I took it ot the dealer for a check and they are replacing the Mass Air FLow Sensor and MAP Sensor. It was throwing P0175 and P0172 codes. Parts will be in on Tuesday. I will report back when parts are replaced