I have
Seat Ibiza TDi 2001 with ASV 110 engine. Had limp mode
problem - sticking vanes. So on Monday stripped out inlet and exhaust manifolds. Stripped and rebuild the turbo vanes, they weren't carboned up but were mechanically pinching. Had to remove small amount of metal to get running clearance.
I'M GETTING THERE. before you ask what's this got to do with MAF.
Well motor still not reving as well as I'd have expected or heard it should but no more limp. Tried cleaning MAF, much much better performance. But read somewhere that usually if they need cleaning they need replacing. So bit the bullet and spent £52(from Andrew Page) on new Bosch one.
What a difference - pulls harder everywhere in rev range and revs to red line like a good un.
So I know it's not my money but I would say go for new one.
Malcolm