Scirocco Central

Hi all running out of ideas with this ive oreplaced the manifold cleaned and checked the electrical connections to the sensors replaced the sensors checked the air intake system for leaks and got no more ideas anyone have any ideas what it could be?

Starting to not hold revs at all on idle now

Hi.
How did you check for leaks?
Some leaks may not be visible to the naked eye but can still cause issues.
Did have this issue on a 1.6 Golf TDI and couldn’t find any leaks anywhere until we used a smoke test and there was a small split in one of the intake pipes which we would never have found just by looking so may be worth eliminating that completely first.