Hello all. just joined the forum and need advice. i have a 4.6 p38. the gearbox is not right. when the car is stationary and you select drive nothing happens just loads of revs i need to select 1st to pull away then into drive to use the auto box as normal. but once stoped i need to go into back into 1st ect... kind of like a semi auto. could this be the auto clutch ? or maybe the ecu.. any advise please