Automatic transmission problem need help
Hi every one im new to this so if im on the wrong place let me know ok.
I drive a 2014 mustang gt with 46k miles i got it preowned . For a fact i k ow the guy used the car on the track and had a procharger on it . Ok ive read several posts about the same issue i have on my trany but havent really found out the real problem what it does as im getting to a stop 3 or2 seconds before the stop the car down shifts really agressive like it kicks forward and at times it does it wile im completely stop and just let go of the break it pushes me forward kind of harsh ..today wile driving it ot didnt want to move until i kinda reved it up to 3k rpm it kicked in again and at a point it didnt even advanced at all it made a slightly whining noise loud enough for me to stop accelerating i conpletly stoped placed it on park then to drive again and worked again.. Please need help i dnt want to make a wrong assumption and spend money on the wrong thing