I have a 2000 Honda Accord EX, automatic, 112k miles. When the car is cold it reves up in rpms before shifting (jumping) into second gear. This happens only from first into second, and there is no reving into any other gears, nor any reving after the first time. The tranny fluid has not been changed as often as it should have.

Any idea what the average cost of replacing a tranny is or what the cause of this might be?