I was having the same issues, and thats exactly what I did, and it went away for now.Put In Lucas Power Steering Conditioner And Stop Leak. Its Worked Great For Me Everytime Ive Used Or Recommended It
Good Tip, I wasn't sure what I was going to try next if it comes back, now i know.yesterday i dumped all the fluid out and blew the rest out with C02
found the screen was torn , so maybe something sneaked into the system , put new tranny fluid and the noise is gone
ill end up buying a new resevoir or screen