['93 Impreza Auto Transmission Issue]

I have a 1994 Legacy that was acting exactly the same way. I t was not acting this way until we took it to a shop for a bad TPS problem. They replaced the TPS and then replaced the wiring harness plug to the TPS   and spliced it about 3 inches from the plug- in. Now it acts exactly like the guys problem above. Someone told me that when he spliced the wires it changed the resistance value and that I would have to replace the engine wiring  harness. Does this sound correct?

[93 legacy 4eat problem after rebuild]

just rebuilt the trans in my 93 legacy (4eat), I have a strange problem when the car warms up the car slips in reverse. This is not the first rebuild that I have done. Anyone have any suggestions of what area to look in,? one suggestion was a pinched lip seal in the reverse clutch pak. thx:banghead: