Annoying Tranny stuff

[Chip Hutchinson]

Hi all,
I got my car back from my daughter after 2 years. I have repaired a few items (with help from the group) and now I have moved onto the next problem. The Torque converter lock appears to lock and unlock at freeway speeds under certain loads. On my way home, the converter locks about 2 1/2 miles into the trip. It will unlock and lock several times as the gradient from flat starts to increase for the next hill until it steepens enough, and at that point it locks and remains locked until I approach the crest of the hill. When approaching the crest, as the gradient lessens, the converter will unlock and lock about once every second or two until the gradient lessens to almost flat, at which point it locks again, only to repeat this behavior on the next hill, and the next...
I live in the Seattle area and hills are a fact of life. Any suggestions as to the cause and cure of this annoying little gremlin?

TIA Chip.