Hi,

Does anyone know if the trans calculated gear ratio is controlled in any way by Line Pressure? If so any ideas or pointers on where to look? I have this car that when in either 5th or 6th gear it feels like it starts slipping the trans, but when you look at the log you can clearly see the Trans Calculated Gear Ratio change from the normal 1.275 to 1.306, 1.359 the 1.404 and the Line Pressure Desired Solenoid and the TCC Line Pressure drops at the same time.

Any ideas?