want shift out of gear when engine operating temp. when sitting in gear like at a red light engine starts to surge

Welcome to AF.

Sounds like you transmision is messing up.
Like the TCC, heres a link that explains it more.
http://autorepair.about.com/cs/doityourself/l/aa011703b.htm (http://autorepair.about.com/cs/doityourself/l/aa011703b.htm)

Let me know if that sounds like what you are experiancing.