You don't really say, but if it is a transmission behind a 2.3, then it doesn't have a TV cable. That would certainly make it difficult to find instructions on adjusting it. hehe.
So whats the transmission doing wrong? Shift points and line pressure are controlled by the modulator valve. There is a kick down cable, and the adjustment for that is on the throttle body. you just flip a tab up, adjust it, then lock it down again.