Thanks for the info Brian
To me, I lean to the control panel or blend door area.......my reasons.....see what you think..
You said you flushed the heater core hoses, so I assume that means you flushed the heater core and had good water flow from both sides of the core. That would indicate the core is okay.
The temp of the vehicle was very cold.......you changed the thermostat.....heater was working fine......temp of engine.....fine. That would indicate again, the heater core is working okay and the water pump is working okay.
Why did you replace the control panel.....do you have an automatic or manual system..
How are you verifying the blend door is working as it should?
Are you sure the connectors are definitely secure on the back of the panel since you had it removed and or there are no wires pulled out.
Also, that there are no vacuum lines that came disconnected or split when you removed it.
Then you said it just stopped..............
Now the only thing that may point to the inlet control valve or possible poor cooling system operation is you said the hoses were warm. The hoses should be too hot to handle.
Here are some tests for you...............
Here are some tests for you for insufficient or erratic or not heat.
Monday, February 8th, 2010 AT 8:47 PM