When i said tranny i meant transmission for all you west coast people j/k I went ta cali and omg I had neva seen a shemale before so damn. Well anways gettin to the point. When i get on it the car goes smoothly but when i let of the gas (automatic) it shifts into forth u know but it starts to vibrate when i'm goin slow or stopped at a red light but as i accelerate the vibration goes away just when it's in high gear driving slow or stopped someone said it could be my torque converter or i need a new tranny. Can someone tell me if thats right?

when was the last time you checked your oil????

I just changed it the oil when i bought the car was straight black its still doing it. One of my friends with a MK4 that works for toyota said it might be the torque converter or the tranny