A1 strange idling noise...

[Steven Lynas]

Anyone have any idea what this might be caused by?



Any thoughts welcomed! Garage bought from seem to think this is totally normal. Happens at random but worse once warmed up.

 

[vag-tech]

That the sound of TFSI high pressure petrol injection. It's normal. If you want it to go away, disconnect your rail pressure sensor (don't actually haha).