Well guys I managed to do this thanks to the excellent information..
Seems to be completely fixed now
Engine light went off, pulls like a train!
Thanks again
great news mate that you've fixed it and welcome to the madhouse, lol
hope u don't mind me saying but have a look on here about the egr bypass kit and also doing the bmw crankcase filter conversion, well worth doing
I've got a 2002 td4 auto and when I got mine went through the whole car, a good full service, also replacing the oil in the engine, autobox, ird and diff, checked the tyres to make sure they were all the same make, size and pressure etc
plenty of info on here but if u get stuck there's plenty of us here to help u
where abouts in the UK are u if u don't mind me asking
happy motoring mate