I took my EGR valve apart yesterday to give it a good cleaning. Obviously in order to get the EGR out I had to remove the anti shudder valve but I just followed the guide instructions and left the anti shudder valve resting on the bottom of the engine so I didn't actually touch it.
Since reassembling the car it now judders when I turn the car off. It isn't a really bad judder but it definitely judders and never did this before hand.
Any ideas what could be causing this and how I can sort it ?