Help please!!! Blue line thermal wave hp. Getting a 14 code which is a coolant issue. Changed all thermostats. Changed the sensor on the back. Reservoir is full. Remove radiator cap and its full, color is great. Engine bogs down after roughly 2 minutes. Engine isn't even hot and it bogs down. Nobody can tell me what's wrong with it. I'm down a lot of money trying things and I'm out of ideas. Any help or ideas would be appreciated!