Hi all, so I recently bought a 2006 Passat with the 2.0 BKP engine.

The car has had an ongoing issue since before purchase.

The car drives very well and is no way hesitant throughout the rev range, the issue only arises when it is sitting ticking over.

It seems to idle at at a very low RPM (almost like it finds a low idle if that makes sense?) and when it does this, it causes a shudder or a vibration of sorts.

The problem is not there 100% of the time, but it certainly is there MOST of the time


It is visibly noticeable in the engine bay when this is happening, the engine shakes excessively particularly around the upper left mount / alternator area ( as you look into the bay)

A small blip of throttle and the shudder will go away for around five to ten seconds and then proceed to return.

I have checked the alternator clutch pulley and it seems fine. I think I can rule out the DMF as clutching does not lessen or remove the shudder.

Also, there are no warning lights etc showing on the dash.
!
I would really appreciate some guidance as I'm stumped!!