running problems

hendyc04

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Joined
Apr 4, 2004
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london
Help
i seem to be noticing more and more problems with my
A4 T sport
when driving casually in between the 2000-3000rev range
i notice that the when i take my foot off the accelerator
that there is a jerking feel as if i had hit the brakes
lightly, on top of this when the car is warm the idling is very erratic
and i can feel the car shaking. i've driven a simlar age A3 T sport and
it doesn't suffer any of the above and it has twice as much mileage as mine
 
could be a coil pack on the way out, which would account for the shaking & stuttering, does it start ok?
Has it been serviced recently?