Hesitation On Launch

[mixmastercase]

Yesterday I was stopped at a light. It turned green I pressed on the gas pedal and the car kind of choked and my speedo went all the way to the end and then back and then I was able to go. First and only time this has happened. It hasn't happened since. Any ideas on what could be wrong?

3.4 if that makes a difference

low trac?

[mixmastercase]

nope no traction problem at all the engine choked and then was alright I just have no idea what would cause this. I'm getting it checked on friday but I thought it would be good to have some idea of what the problem might be.