I edited my post above ^ concerning the post that I was referring to in general.


Anyway now that you brought that up heat does rise and if NO coolant is going into the heater core then the outlet hose above the enging (on the intake manifold) might have some heat in it. Regardless, if one is hot and one is cold with the heater in the HI position and the temp setting in the HOT position there should be flow from the pump to the intake manifold creating a loop, both hoses should be hot but the one going to the manifold should be a tiny bit cooler. If there is a large difference in temperture or one is cold then it means there is a plug in the heater core OR the valve is stuck on some models.

If the hoses are hot on both sides then the blend door is at fault.


Question: If you pull the dash to do a core do you HAVE to pull the coils or can you leave them alone. I know it's better to replace but ?????????