Still Shaking After Various Replacements

[dgoodlander]

2009 A4 convertible 2.0T FSI - I bought it used, has 68K on it, overall in good shape but it did have the engine rumble at idle, or a better description is it seems to be running a tad rough at idle, you can feel it in the steering wheel sitting at a light.

I replaced the PCV, spark plugs (4), and ignition coils (4). Also replaced the air and cabin filters.

I would say the performance has improved a bit, but it still has the slight vibration/rumble as you sit at the light

My question, what's next, what else can I do to get this running smoothly?

[RITRedTurbo]

Check for small vacuum leaks that might not have set the check engine light, they could be causing your engine to run lean. Have a look at the integrity of your engine mounts it might explain some of the rumble you feel through the steering wheel.

[ROH ECHT]

Yeah, my first thought was the mounts. I would give it a good hardy shake and also watch while someone else starts it up. Make certain all three of the mounts are still solid...then would check your error code storage with a full scan. Dipstick seal, oil filler cap seal, PCV's external tubing, brake booster tubing...and other possibilities still left to check.