i was trying to merge into traffic from arbys and i pul out and i get the center lane and i wait till i have room to merge, well i go i mash the gas and it does nothing it revs and it kinda studders, i let off the gas then i try again and its fine. wtf? it also doesnt like to shift smooth when driven more then a half hour or when warm. any ideas.

Well when is the last time you changed the trannmission fliud on the car.

i had it changed right after i got the car, that was about 1300 miles ago

Have you checked transmission fluid level lately?

yeah it looks and smells good

Sometimes the shift solenoids can get sticky from varnish buildup. A mechanic suggested to me to try some Seafoam Trans Tune in a problem transmission. It took care of the problem. You may want to give that a try. It only costs about $5 or $6. Advance carries it, and I think that Autozone does too.

how do u put the seafoam in the trasmission? is it like the seafoam for the engine?

With transmission at operating temperature, check the fluid level. Add 1/2 to 1 pint SEA FOAM TRANS TUNE to the transmission fluid. This normally will not overfill the fluid level, however, the fluid level should never exceed the manufacturers recommended level.
For best results use 1/2 to 1 pint SEA FOAM TRANS TUNE in the transmission fluid prior to a transmission flush or fluid and filter change. Drive at least five miles shifting into all gears. If you are not able to drive the vehicle, shift into all gears for about 3 minutes with the brake or parking brake applied. This will allow SEA FOAM TRANS TUNE to clean transmission valves and parts in each area. When additional cleaning is necessary add 1/2 pint of SEA FOAM TRANS TUNE to the transmission fluid and change the transmission fluid on a regular service basis.