I have 93' Acura Legend with 170,000 miles. It's been very well maintained but recently I've noticed a few issues and was hoping someone could tell me whats wrong and what to expect to happen next with the car...Sometimes when I'm driving I've noticed that the "D4" light on the dashboard flashes/blinks a little, when accelerating from a stop it sometimes feels like the emergency brake is on a little but only lasts for a second before it continues to drive normal, and also sometimes when the car which is an automatic shifts from second gear the r.p.m's shift up to 3,000 r.p.m's. Is this a sign that the transmission is going out and needs to be replaced or are there any other things that could be causing this that I can look into?