engine light is blinking...pls help.

Hi there, im new to this forum and thanks for taking the time to read my post. I have a 1999 A4 1.8T Quattro. Well here's my problem. i was driving home from work the car was fine, parked it then came back out 5 minutes later to take off and the engine starts shuttering and lose of power,then engine lights starts to blink. Now, i've done a check for the coil packs by dissconnecting 1 coil at a time while the engine is running and the only one that didnt make the engine do anything was cylinder #3. so then i proceeded to switch the #2 coil pack with the #3 coil pack and still my cylinder #3 wasnt firing and my #2 cylinder was fine which means my coil packs are still good right? so then i did the same with the spark plugs and still #3 cylinder not firing and #2 still ok. Any ideas as to what this could be and what i could possibly be looking at? again thanks for reading this and any help is greatly appreciated.