The shutter
Moderator emeritus
Joined: Jun 2001
Posts: 18,599
Likes: 3,956
From: Jacksonville Florida BWO Dayton, Cincinnati, Bloomsbury NJ, Cincinnati
2015 C7 of the Year Finalist
If it is standing still and is suddenly idling rough, that is not referred to as shudder. A rough idle can be a bad plug, a plug wire, a valve, a lifter, a valve spring and any of which can be diagnosed by a mechanic and corrected.
The "shudder" problem, discussed on this forum, is a transmission problem that happens on the A8. It causes RPM fluctuations and surging while driving down the highway. This situation is also in need of a mechanic for a triple flush and some software update.
So, bottom line, see a mechanic to get your idle issue corrected. As long as it is doing it all of the time, they can fix it. If it is sporadic, then it might be a challenge to correct.
Elmer
The "shudder" problem, discussed on this forum, is a transmission problem that happens on the A8. It causes RPM fluctuations and surging while driving down the highway. This situation is also in need of a mechanic for a triple flush and some software update.
So, bottom line, see a mechanic to get your idle issue corrected. As long as it is doing it all of the time, they can fix it. If it is sporadic, then it might be a challenge to correct.
Elmer
