Im confused , this engine does not have a grid heater . what happened was , truck was going down the interstate and the turbo let go , on the intake side . changed the turbo and charge cooler . truck went out on job for a day and kicked on the check engine light , pulled the egr valve and the flap was stuck , due to carbon build up , clened that up and got it working , seems to run good , just has the light on now , any input ? Thanks