Car juddering when idle

[Jacksimpson]

My Cupra 280 2014 judders when sat idle and the Revs drop to about 7/800 rpm. I have replaced the o2 sensor after the cat as the engine light was on for that but didn’t solve it, also changed the coil packs and spark plugs but still doing it, almost feels like a misfire but it pulls and drives fine. Only does it when stationary. Anyone had this before or have any idea what it could be? Cars done 65k and just had a oil change and new oil and air filter.
TIA

 

[Louiswright]

My Cupra 280 2014 judders when sat idle and the Revs drop to about 7/800 rpm. I have replaced the o2 sensor after the cat as the engine light was on for that but didn’t solve it, also changed the coil packs and spark plugs but still doing it, almost feels like a misfire but it pulls and drives fine. Only does it when stationary. Anyone had this before or have any idea what it could be? Cars done 65k and just had a oil change and new oil and air filter.
TIA

Did you find out what was wrong as this is what mines doing but I can’t find the problem

 

[Dezzer96]

+1 on this too, cupra 280 2014 87000 miles had a misfire which the mechanic changed spark plugs etc still rough on idle but drives like a dream.

 

[cupra14]

What code(s)?

 

[Louiswright]

There are no codes coming up

 

[cupra14]

There are no codes coming up

But you said "as this is what mines doing" - to a post with codes. It's REALLY confusing if you don't have any but quote a post with them...

 

[mykro]

variable camshaft valves, camshaft is floating because of wrong oil flow through valves