ordinary bloke Posted April 12, 2013 Report Share Posted April 12, 2013 Had problems posting this item and it's my third attempt! I have an A6 Avant 2lt Tdi 2005 (C6) which I bought two months ago and have 1 month warranty remaining. Accelerating around 1800/2300rpm I'm getting a stuttering effect, especially when engine under stress in uphill. A distinct 'broken whooshing' sound from engine on o/side area. Had it looked at by a private Audi technician who ran it through his diagnostic kit and showed no obvious fault. The problem is intermittent but he did experience it on a test drive and thought it might be a problem with the turbo 'waste gate'! There is also a turbo whine at start up. Can any pundits out there throw any light/ideas on this. I only want to take it back to the dealer when I can give a definitive (ish) fault claim. Thanks. :confused: Link to comment Share on other sites More sharing options...
cruiser647 Posted April 13, 2013 Report Share Posted April 13, 2013 You could have a look at all the turbo pipes and the at the inlet manifold for any duff hoses. Sometimes, although the hoses LOOK OK, they might be perished and either expand (blowing out the seals) or flatten (restericting the air flow). Squeeze them all and see. Check the vacuum pipes too - make sure they are OK. Link to comment Share on other sites More sharing options...
ordinary bloke Posted April 15, 2013 Author Report Share Posted April 15, 2013 Thanks cruiser647. Will have a look at all the items. Had it looked at by another techie and he could find no 'obvious' fault . Its one of those irritating intermitent issues that never show when you want to demonstrate it. Link to comment Share on other sites More sharing options...
ordinary bloke Posted July 8, 2013 Author Report Share Posted July 8, 2013 I'm really desperate so if any further ideas on a solution or route to take I would be most grateful. The 'stuttering' at around 1800/2200rpm is now a permanent feature. I've had it in a VW/Audi independent specialist and they have been super helpful and have replaced the Mass Airflow Sensor but, sadly to no effect. Pipes and manifold checked and no fault. Heeeeeeeeeeeeeelp! Link to comment Share on other sites More sharing options...
gupsterg Posted July 28, 2013 Report Share Posted July 28, 2013 The 'stuttering' at around 1800/2200rpm is now a permanent feature. On another forum I frequent someone was having this fault and there is a vacuum actuator on the inlet manifold which was at fault ... google for SSP412 Audi 2.0l 125 kW TDI Engine with Pump Injection System on page 14 you will see it ... Part no is 03G 129 061 C , description 'Vacuum unit' , approx. £11 @ dealers ... Link to comment Share on other sites More sharing options...
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