Recently got this car and have noticed that there is a shudder or vibration when accelerating in 1st and 2nd gear, but only until ~ 2000 rpm, then its smooth as day. It does this around turns or going straight, and there is no noise or chatter when it happens. Also, it does not vibrate at all on the highway at any speed, its very smooth on the highway. Really only when letting out the clutch and accelerating until 2k. Anyway, does anyone have an idea of what this might be? The car does have gears in it (previous owner), and the shifter it not vibrating or anything.