52 plate gearbox over boost issue......help, advice needed.
I have a 52 plate a4 2.5 tdi v6, tiptronic box which has done 51k...........i got it serviced last week and car came back with an intermitten over boost fault on the box. The car does drag a little when going from stop to something if going up hill. Other wise the car drives well and and will happily sit at 80/85mph on the motorway. on occassion when pushing from 50-70 it will over rev but switching into manual mode it will change up as it should, strange.
Am i thinking this is a relativley meduim cost fix or am i facing a 1500 or so quid bill for a new box, i hear the recon box has to have new updated parts put into it before fitting.
any help, guidance, advice would be really greatly appreciated