0770 code

What is your question?

obd code 0770 showing. Have replaced all three selonoids , drained fluid and new filter. Also replaced throttle position sensor. Engine temp sensor is next on my list. 4 runner will shift into OD around 60 mph on its own or if I let up on gas pedal above 45 mph. 4 runner has 209000 miles. There was a fair amount metal filings in oil pan when i changed the fluid. Hoping this is not a transmission gone bad!

What makes this problem better or worse?

stays the same

How long has your 2000 Toyota 4Runner had this problem?

two weeks