I've got a weird engine judder from my 1.9TDi. In 5th gear at around 1800-2100rpm under heavy acceleration, the car feels like its in the wrong gear and starts to judder, the gear stick also starts to wobble. It sometimes does the same in 4th at the same sort of rpm range. I've also noticed a drop off in performance, it doesn't seem to want to go.
Today I cleaned the EGR valve, inlet manifold, MAF, intake valve (is this the same as the throttle body - i'm not mechanically minded!!) and hoovered out the air box because it was full of leaves. I replaced any gaskets/O rings I took off to eliminate any leaks. I'm still getting the judder even after all this cleaning. The only benefit I got from it is a quieter idle and slightly better throttle response but its still not like it used to be. The car was remapped about a year ago and has been running fine since.
The EGR was caked in carbon as was the intake manifold, i'm surprised it was working in the state it was in!
Have any of you guys had any symptoms like this and what was it or what could it be? I'm thinking it could be either the turbo, boost leak, injector or flywheel (the clutch is at normal biting point and replaced about 30k ago so i dont think its that).