I have a 1995 formula LT! A4. Today while driving around came up on a little ricer that wanted to race. So the light turned green and we both went. By the time my car shifted to sceond i was 2 cars ahead. Then i had a bad vibration. The whole car started chacking so i let off. Now the car runs fine but when it shifts into 4th. Insted of going into 4th ists like driving with ur foot on the gas and brake. But if i put the shifter into 3rd insted of D. Its will shift fine just wont go into 4th. Any idea's? Did i blow 4th out???