2001 Honda Accord, 6 cyl, automatic. Just had transmission rebuilt. Now, normally very peppy car, can barely move. Very slow acceleration, especially from stop. Took to dealership and transmission shop, but they can't find anything wrong. Help?

. Ensure the platinum spark plugs have been changed in the last 50,000 miles (NGK only).

. Focus on the Camshaft Position Sensor and Crankshaft Position Sensor.