a6 2.7tdi juddering/shakey on coldstart


Registered User
Hi guys, I would be very grateful for anyone who can shed some light or point me in the right direction.
I have a 2006 audi a6 2.7tdi auto with 96k miles. It drives spot on but recently just started juddering and became really shakey on cold start, and after around 15mins when warmed up, It returned to its former self and was absolutely fine. This happened to me whilst I was over 100 miles away from home. Once warmed up and I was satisfied it was driving as it should, I drove all the way home with no issues but every cold start has some really heavy judder. Diagnostics bringing up nothing and no warning lights. My mechanic of 30 years plus experience is also 'lost'. Any help would be appreciated...


Registered User
Quick check. Unplug the MAF see if any different.