I was having a problem with the Trans not shifting correctly(seemed to slip) I took it to a transmission shop, the guy changed the fluid and put some kind of additive in the trans. Worked great until yesterday. I went down an 11% grade. Put the trans in second to keep it below 35 going down hill.
Guess I should have had it rebuilt in April, instead of trying to save a few bucks, when I was on my way home I had to go back up that hill had to stop about half way up the hill behind a bus. Now when the trans shifts in feels like the trans is slamming into gear. So I guess it time to pull the trans and get it rebuilt the trans has 175000 miles on it.
Question take it to a Ford dealer or a transmission shop.
the guy that changed the fluid said he would rebuild for $2600.00, but I am kind of leery of this guy. At least he speaks English.