Little more info.
I spent some time on the phone with the shop that @torfab recommended.
Explained the issue and symptoms. His basic thought process is that the clutches in the converter are gone. That is why I lost lockup first. The clutches then continued to fail and have likely gone...
If anyone finds this via a search I found this thread
https://www.offroadexpress.kiwi/Forums/viewtopic.php?t=44287
Almost explained my issues perfectly
Welp, I've got bigger issues.
I have 6 neutrals. I took it for a drive to see if I could figure anything out. Rpm's started to flutter in o/d then it acted like it was in neutral. I was able to limp it to a parking lot using varying techniques of low range, or high with the diff lock. Each...
1991 HDJ81. 1HD-T
Just today this occurred. It will not lock up the converter regardless of speed. I don't see to have any other issues. I verified kick down adjustment and just for fun drained and filled the trans pan.
Fluid was full, looked fine, did not smell burnt.
I searched and...