B6 S4 4.2l engine vibration

[Grant Lenahan]

dumb idea.  Motor mount?

have never seen the flywheel.  So cant comment on that

Grant
On Nov 12, 2010, at 12:01 AM, John Cody Forbes wrote:

> Got an S4 in the shop today with a __horrible__ vibration. It is  
> 100% engine related, is not effected by clutch position nor road  
> speed. Noticeable at idle and get worse as you increase revs, so  
> much so that I am afraid to take it beyond 2000rpm. It is not a  
> misfire, engine runs well. No CEL. Everything on the front of the  
> engine looks ok, harmonic balancer runs true, etc.
>
> The only thing I can think of is that the dual mass flywheel center  
> bearing let go and the clutch side of the flywheel is off center.  
> Obviously the cost of being wrong about that is significant.
>
> Any ideas/input/btdt?
>
> -Cody (mobile)
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