My 2004 1.9jtd has developed a lack of power problem.
It started intermitingly juddering I would describe it as, these became more frequent and any kind of incline it really struggles to go up and now the engine managment lights has come on!
It ticks over ok its just under power it struggles.
Hope somebody can advise as I live out in Spain and really struggle to find a decent mechanic!

Check the small pipes that go to the turbo control valve - red and blue pipes and its on the side of the battery. Mine were lose and leaking etc...