Really need help with new installed auto trans.

[Goofyexponent]

Is the transmission out of an IDI? PSD E4OD's had the same case, but IIRC, some electrical pins in the plugs were in different locations.

I think the PSD's came onto the stage in 1994.

I am not sure if this would cause the problem or not, but if all else checks out, it very well may be an issue.

 

[gonecrazyi]

Mine tcase was doing this when I first bought my truck. It turned out that the shift rod that ran into the tcase from the linkage had worn an oval in the bore and was allowing the shift plate to fall away from the fork when I let off the throttle.

I took the tcase apart and used washers to hold the shaft steady until I could get a new tcase.

I would be driving along, shift, hear a clunk and have nothing.

 

[Goofyexponent]

Mine tcase was doing this when I first bought my truck. It turned out that the shift rod that ran into the tcase from the linkage had worn an oval in the bore and was allowing the shift plate to fall away from the fork when I let off the throttle.

I took the tcase apart and used washers to hold the shaft steady until I could get a new tcase.

I would be driving along, shift, hear a clunk and have nothing.

Wouldn't THAT drive you up the wall!! I had no idea that this was a problem on the T cases....but I suppose, there are a lot of things I have to learn about these trucks

 

[zukgod]

That sounds exactly like what it's doing. I will check all the easy stuff first then into the tcase I go. Thanks again all.

 

[zukgod]

I just wanted to thank all that helped with this problem. It turned out to be the Tcase shift forks. So buddy put a complete rebuilt one in or should I say I did it but it now works great. Thanks again everyone, you were all a big help.

 

[87crewdually]

Not surprised on the forks, rather common. Congrats......know on to the next project I'm sure.