I am new to the Audi gang and this forum, I have an A6 Allroad 2.5TDi 2000 reg and love it. I have owned it for about a month and it has been running like a dream. I am now starting to have a little issue however. When passing through 2400-500 revs in 5th and sixth gear at a gentle speed the engine has a little flutter, almost like a miss fire. The problem is intermittent and if you accelrate fast through this section of the revs the problem is not there. I have just changed the air flow sensor, but this has not solved the problem. Can anyone be my night in shining armour and help me in my quest for happy Audi driving again??