I have a 2002 Mustang GT auto that when I start the car the RPMs jump way out of the normal range and when I put the car into drive, it feels as though the car has cruise control on. The RPMs will stay in the 1000-1300 range and when I press on the brake the car continues to try to accelerate, until it finally dies. At that point I will start the car up again and most of the time the problem will be gone for a while. I recently replaced the IAC, TPS, spark plugs, cleaned the MAF with MAF Cleaner, cleaned the throttle body & plenum. I need some direction, I have no idea what is wrong. I will upload a video if needed. Help!