My Octavia 1.6 tdi 4x4 has developed a very rough acceleration only happens when over 2k rpm and especially when underload (car full or heading uphill) in 5th or 6th. It’s fine in 1st 2nd and 3rd. No misfire or juddering, just the whole car vibrates and feels rough, when not accelerating and just maintaining speed it’s as smooth as ever. Any ideas? 

 

Thank you.

Edited 11 August, 20187 yr by mdon

Anyone had this problem? Could it be the egr?