ok i just got a newer motor in my truck and it runs good but the tempaturer gauge is sayin it over heatting but if i go touch the coolant its not even hot i already changed the sencor on the block and i changed the themistat already and it does the same thing and now my truck cuts out at times the service light came on and it said the 4th clyinder misfire and 2 codes for low coolant temp inputs but its good we checked it already so idk what it could be hope someone could help