Audi A6 3.0TDI Revs Up/Down

[Rocko13]

I have bought and Audi A6, 3.0 TDI, Quattro (Auto - Trip), 2007 with 95,500 on the clock, with FSH, 1 owner and with the long life service.

I have had the car for 3 weeks now, and have noticed that when I am driving at about 40 - 45 miles, and then release my foot off the accelerator, the rev's start to fluctuates (Hunting) up/down. This is happens when the car is cold, once hot, it's Ok.

Its fine to drive, fine at idle from Cold and Hot, its only when you release the accelerator pedal and let car slow down on its own speed.

Has anyone got any ideas?

Please see address for link, below so you can what I mean?

https://youtu.be/b_NHYyRjqc8


Thanks