Hello Richard I would like to help you with this.
I'm curious as to why the torque converter was replaced to begin with. Was there any issue with the transmission or the vehicle prior to this that led you to replace this?
Also when replacing the torque converter it takes all lot of transmission fluid to fill a backup
If you try and put more transmission fluid in does it fill up the fill tube and overflow?
The way I do this is I fill the transmission to the Fill mark and then go and with the engine running put the transmission through all of its gears several times. That I go back and checked the fluid again, and keep adding fluid until I feel the transmission engage.
Once a field transmission engage that fill the transmission until the dipstick shows full. I then run through the gears while the engine is running until I am sure that all of the air Has then flushed Out of the system . You can usually here a wining noise when there is still air in and the lines.
If you have done all this and you still do not have transmission function then you may not have got the torque converter seated all way and that side the transmission.
Or you have a bad pump.
When installing the torque converter you put it in the front of the transmission and turn it until all the splines lined up and it seats all the way in.
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