On Mon, 03 Jan 2005 04:32:12 GMT, dph > wrote:

>daytripper wrote:
>> On Sun, 02 Jan 2005 21:37:33 GMT, dph > wrote:
>>
>>
>>>I have had trouble with my A6 4.2 automatic transmission for about a
>>>year and the dealer can find nothing wrong.
>>>
>>>Intermittently when I accelerate from a dead stop the transmission does
>>>not deliver adequate power. Engine revs are appropriate for the speed
>>>but it feels like I have started in 2 or 3 gear. There is just no
>>>acceleration. With mild accelerator pressure the engine revs to 4000
>>>then abruptly shifts to second. Power is then OK. If you really need
>>>to you can push the accelerator hard and it like shifting down from a
>>>higher gear.
>>>
>>>This happens both when the car is cold and when it is hot.
>>>
>>>The dealer has had it three times and finds no codes from the
>>>transmission and they keep having me drive a mechanic around but of
>>>course it won't happen then.
>>>
>>>I am leaving it at the dealership this week and giving them permission
>>>to drive it until they experience the problem.0
>>>
>>>Anyone have any ideas what may be the cause?
>>
>>
>> Does your A6 have DSC? Can it be shut off from a dash switch? Try shutting it
>> off and see if anything changes...
>I haven't tried. If it does and it solves the problems what does it imply?

A faulty wheel speed sensor could cause DSC to cut power and apply selective
wheel braking to "correct for" non-existent wheel-spin...