Hi my Octavia 1.9 tdi sometimes idle like a v8 rocking the whole car it has also started to shaking under load has anyone else had problems like this??

DMF on its way out?

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Hi it's had a new gearbox clutch and dmf so I wouldn't have thought that would cause it to idle like a v8 muscle car sometimes lol I was told by a friend to check the egr valve but the car doesn't bring on any lights while playing up and I have vag com and can't find any codes so I'm at a loss!

Engine mounts?