I have an automatic 1999 323I with 120K miles on it. The car has been shaking for the last 2 months when I decelerate and sometimes also when I accelerate quickly. The problem is worse when I first start the car and start driving and gets better after about 15 minutes of driving but the problem still exists when I am driving. How much should I pay to get my transmission replaced? Should I get a new transmission, reconditioned, or one they just take out of an old car? Any other advice?
Thanks