I have a 2001 Celica GT (Automatic) I have 83,000 miles on it. Whenever I press the gas it seems as though im not going fast enough. I hear the engine reving up and the speedometer moves, yet my car isnt going as fast as it should. Sometimes the car will jerk foreward if I keep accelerating. I replaced my transmission fluid and spark plugs. Yet still nothing. If anyone has any idea please email me at raizer012345@yahoo. Com.