Ok I have a 2006 Acura MDX with 238,000 mile. I have place new brakes, belt and vtm-4 sensor. I had a O2 sensor place bank 2 sensor 2 replace and all type of sensor pop up afterward. The vtm-4 , a/t temp, vsa ,tmps and a flashing d5. The car still run but will not go over 50mph. I have took it to acura dealer paid 70 dollars for the same sensor codes ran at local auto zone. An map sensor was recommended but try that and d5 still flash. Also I put already 30-40 a day in the car and sometimes it will only start in netrual. The car ran perfectly fine, till I had a shop place a o2 sensor on. Do anyone have a idea what the issue could be? Are what to start with first?