My dream 'bird is a nightmare. I have taken to a dealer and consulted two friends that are mechanics and all I seem to do is lose money besides what I owe on the car (bought used, August '13). It overheats, and now it doesn't seem to get decent heat from the vents inside the cab and will lose heat as it gets driven. I let it idle and get to norm temp and it can't even make it around my block twice without overheating. What I've done? New coolant reservoir, New radiator, New water pump, New thermostat, New housing that the thermostat closes on. As far as I can tell there are no leaks and the dealer also said the heater core is fine. The fan also works, runs very loudly on high but works as it should. Is it possibly a sensor issue? Is there a sure way to get all the air out of coolant system? would having air in the system cause it to constantly overheat? Help.