Need some help. Drove up to Warwickshire today but on way back 30 or so miles from home it's started popping out of 3rd Gear and I think it also popped out of 2nd once. It stays in for a while but just goes back into neutral when it feels like it. It may be partly down to the road surface but I can not be sure. Also seems to be a slight whining, gear box giving up? It's done 157k and I had the clutch replaced end of last year. Any ideas folks
2001 Onyx Black 306 HDi Dturbo