Am I right that the Coolant Temperature Sensor that the gauge reads from is in the Cylinder Head ? (why I ask because is there a seperate Temperature sensor for the ECU ?)
Anyway, in these cold mornings I let the Engine warm up by driving along & when it gets to 90DegC I start using the demister on Hot................but I find that the gauge drops back to 60DegC...................Is this because I'm dragging all the Hot Water through the Heater coils & thus taking the heat out of the engine or is it simply that the thermostat has opened and all the cold water that was in the Radiator has now made it's way into the cylinder block ? (this water being cooled even more that it was before I started moving due to all the cold air passing through the radiator due to the motion of the vehicle)
Paul
Anyway, in these cold mornings I let the Engine warm up by driving along & when it gets to 90DegC I start using the demister on Hot................but I find that the gauge drops back to 60DegC...................Is this because I'm dragging all the Hot Water through the Heater coils & thus taking the heat out of the engine or is it simply that the thermostat has opened and all the cold water that was in the Radiator has now made it's way into the cylinder block ? (this water being cooled even more that it was before I started moving due to all the cold air passing through the radiator due to the motion of the vehicle)
Paul