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    Why's My 2.0 TDI Running Rough on Idle? (With Vid)

    Had same problem with my 06 a6 took it too garage where they told me dual mass was on its way out cost £1100 to change problem still same after so took it to Audi dealer said it was a common fault that they run lumpy on tick over put air con on with heated rear screen run ok so they put it on...