I have a 2005 magnum rt. Some year back the temperature gauge stopped working. I replaced it, still not working. I just replaced the electronic throttle control body assembly I checked the code and it now read po128 I went ahead and replace the coolant temperature sensor again and a thermostat temperature gauge still not working the car is surging stalling at stop signs shifting too early and once at lunged forward any and the electronic throttle control light flashed on. Any suggestions on what to look into thank you

 

Also recently I just replace the oil pressure switch to