Going Nowhere Fast

Just recently my uncle backed out of his driveway with his 2003 Ford Taurus Wagon (AX4Ntransmission), put it in drive and had no movement. He then put it in reverse and still had no movement. So there he was stuck in front of his house, going nowhere fast! And I must say that if you are going to experience a sudden no move condition with your vehicle, there is no better place than in the front of your home. The vehicle was then brought to the good folks at R&J Transmission Service in Waldwick, N.J., where they did a great job taking care of my uncle's problem.

Figure 1

I am sure that many of you who are reading this know exactly what happened. The spline for the pump drive shaft inside the torque converter stripped out. This is a fairly common problem and most torque converter rebuilding companies install a hardened pump drive shaft sleeve (FD-WS-31) (Figure 1) into the converter to prevent this from recurring.

闪避车早期发生类似的问题，因为1999年有3.7L或4.7L发动机。原因与福特的原因不同，但结果是相同的：突然“走得不快速”的条件。道奇的原因是剥离的粉末金属涡轮机毂。由于AX4N的泵轴样条，因此不会发生与AX4N泵轴样条相同的问题，因此原因并不像快速识别。事实上45RFEtransmissions many times this sudden no move is blamed on the pump since it has its own fare share of issues.

The pressed powder steel turbine hubs are made in such a way that if any engine modifications are made to increase torque, it will soon strip out. In some cases we see customers who start their vehicles and immediately select drive while idle is high, slamming the engagement. This too will eventually take out the hub.

So if a sudden no-move condition should happen to a Dodge vehicle, of course the filter and pump are to be considered, but don't forget to look inside the converter for stripped turbine hub splines (Figure 2). A steel turbine hub (CH-HT-19HS) with 29-tooth hardened internal spline is available (Figure 3). Otherwise, once you put the unit back in using the same converter, you too will be going nowhere fast!

Figure 2	Figure 3