I have a 2001 4.2L A6. The engine skips or briefing surges several times, espically while under load climbing a hill. This is most noticible in the 30-60mph range. The dealer's latest incorrect guess was the mass air sensor. Any ideas?

Here is the link once again:<ul><li><a href="http://www.audiworld.com/forum/a6.html">http://www.audiworld.com/forum/a6.html</a</li></ul>