You might see if you can do some research to see if your problem is related to the same type problem that the 95-97 Accord V6 has. The problem is a resistor in the coil that breaks down when hot and causes the tach to jump around and this messes with the speed sensor which makes the transmission go in and out of over drive. The result seems like a bad miss in the engine.
Check this link. The 4th post down has the answer.
http://www.automotiveforums.com/vbul...highlight=jgr7
Jeff