My heat quit working in January of this year on my 2001 Chrysler PT Cruiser. I have flushed the system, changed the thermostat, made sure all air bubbles were out of the system. I have moved the cold-hot dial to make sure that the blend door is working properly and it is, the air condition works great and all vents are blowing out as they should on the different settings. I have felt both heater hoses and both are hot and still no heat. On cold mornings when I let the car heat up to the halfway point on my temperature gauge there is barely any heat and what I find strange is when you start driving the temperature gauge starts falling and on very cold mornings earlier this year it would fall all the way back to the bottom of the gauge. It has never overheated or even gone past the halfway point on the temperature gauge. After calling the Local Chrysler dealership parts department I find this car has no heater control valve or blend door actuator, not sure about any vacuum lines being bad, I have not heard any hissing coming from underneath the dash. Could someone please help me figure this out? Thanks. -Mark
