Minesays there is a fault! I rebuilt the top end of the engine, and no sooner had i started it, the TPS and O2 sensor produced a code. Then when i changed the TPS, it would rev fine but every nowand then it would bog down and the automatic gearbox error would show on the trip computer.

Tried taking it down the road, and when its in drive, it has absolutely no movement, and the engine bogs down. In 1st its not too bad once you get it moving.

Could it be fluid? Is the eratic engine behaviour linked to the gearbox telling it not to rev?

Any help much appreciated