I posted a thread awhile back with no solution. My trans shudders at low rpm under load. It has a high idle 5 seconds after put in park. Also, i am not sure on this, it seems like the converter doesn't lock. It upshifts into OD too soon. It does from 2nd - 3rd too if you ask me but that might just be the nature of it. I flushed the trans. The pan was pretty clean. I put mercV in it. When i did my hg's, i had the cow off and some water got into the dipstick. I didn't even realize it. The fluid was a little milky. I drove it once before i realized what happened an it shuddered. So i am assuming the water did damage. Could it have damages to solenoid? Or is it more likely mechanical? At half throttle plus, theres no shudder. Its a '94.