[wiswind]

I'm also wondering if the tranny is fully easing up.
It should still provide some engagement...but it would have enough slip in the torque converter to avoid bogging down the engine.

I guess the FIRST thing I would address is any routine maintenance items....including transmission fluid (use a fluid that meets the Mercon V specification).

Vaccum leaks are another thing that I would look into.....as in condition of all the vaccum lines...including the PCV hose.