23-03-2016, 01:27 PM
5th gear nut probably come off, or just a shot synchro, lack of oil, etc, impossible to say without taking the end cover off at least.
doesnt always mean new box time.
doesnt always mean new box time.
need a part number? http://public.servicebox.peugeot.com/ and http://service.citroen.com/ will sort you out.