I had changed the plugs on my 01 a6 2.7t a few weeks ago, and then I got a misfire...I found out what the problem was, I needed a new coil pack on cyl #4. Replaced it car ran great for the past like 2 weeks. Now all of a sudden , today, I'm at a stop light, and it starts shaking from the engine, kind of like how it feels when your stopped on an overpass, with a semi right behind you. I drove for about 15 minutes, then it went away. GOt back home about 30 min later, and started doing it again in my driveway, this time with a CEL.
Any suggestions???

 

probably another coil pack I think a general rule of thumb is that when one goes, the others soon follow.

 

Ok, misfire cylinder 4 again!!! I know its not the plugs...O.K. I hope I got sold a POS brand coil pack and none of the B.S. in their warranty info paper is true...Theyre pre-blaming it on a million different things...Has anyone heard anything bad about STI coil packs? I hope this was just a piece of **** brand and that I dont have some other major problem!