I had to change out the #3 ignition coil last week which fixed a misfiring problem I was having. I was able to buy the part and replace it in like 5 minutes. I drove it all week at normal frequency (twice a day, about 15 miles in each direction at freeway speed) and only this morning on the way to work did it start giving me problems again. Service engine light is blinking intermittently again, so Ill probably have the code read again today. If it is the same ignition coil, anyone have any idea what could be causing it to go bad?