Transmission down shifts on it own when it warms up, usually below 30 MPH.

What is your question?

When the car is cold it runs good but when it gets warm the transmission down shifts on its own,and when you hit the gas it slips. Usually happens when driving 30 MPH or less. Changed all three celinoids and it was good for a week . Then it started doing it again.

What makes this problem better or worse?

When it warm's up the problem get's worse.

How long has your 2001 Honda Accord had this problem?

About two months