Contour Enthusiasts Group Archives Forums Modifications Transaxle After half year struggle. ATX still has problem

I got this code form ford dealer, cost me $75. I thought it should be correct. The TC has excessive slipping on freeway. Usually, it is 2550RPM at 70M but now is almost nearly 3000RPM at 70PM. After freeway driving, the O/D light starts flashing, and bang shift comes.