Hello Audi World

I have an A6 1.8T Quattro 2000 model with 62k miles on the clock.
Overall very pleased but over the last few months it has developed a
problem which yesterday took a turn for the worse.

Under hard acceleration the engine stutters - it is fine at normal
acceleration and to be honest when I first noticed the problem the car
was shortly due for a service and so I didn't do anything about it.
After the service (non dealer), the problem still exists. However, it
has also developed further in that the car exhibits a similar
stuttering (like a misfire) at high speeds (over 65mph). This was
particuarly noticeable when accelerating - but yesterday it happended
when crusing. I was on a long journey back from the south of england
fully loaded with kids, wife and bikes.

Something I noticed after I had stopped for fuel is that when I
restarted the engine it hunted up and down (about 300 revs) around the
idling speed for about 1 minute before settling down.

Anyone have any ideas? Is there a helpline I can call?

Thanks

Simonb