My wallet has just shot across the room and hid under the couch after reading how much gearbox's cost!!!! Please help, I can't find a topic the same as my fault, when the car is cold.. ie stone cold first in the morning. I drove half a mile and the box clunks and refuses to come out of third gear. I stop the car and switch the engine off and restart... hey presto the fault is gone but it is certainly not forgotten and will return. It was suggested a sensor fault in the box but seems too predictable when it happens and once you restart the car will perform faultltess for the rest of the day covering hundreds of miles? could it be the ATF? anyone had a similair problem? am I going to have to try and print my own money?