Chrysler Repair: Question on no heat, coolant system, heater hoses

Question
Thank you for such a quick response. I have done a good deal of mechanic work and I was unsure as how one system would affect the other in such a manner as well. I have a trained mechanic working on the car now and he is looking to see if the door is the issue, having confirmed that the 2 hoses are hot. Thank you again for your time and the fast response.

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Followup To
Question -
My question is about a previoously answered question on engine heat. You gave two possible reasons for the issue. "the hot coolant is not circulating thru the heater core or the blend air door is not moving properly" I read an article on the 2.7 liter engine where this issue was caused by engine sludge build up. This would also lead to engine failure. Can you confirm that this may be the cause. I have a 2000 Concorde and the heat is not working. Here is the web address of the article. http://www.datatown.com/chrysler/

Thank you. Steve
Answer -
Hi Stephen,   
Though I am aware of the problem, I have to admit that I am not knowledgeable about the stepwise failure process in the 2.7L engine that was experienced around 2000. From what I briefly reviewed in your citation it appears that the issue has its root in the oil system and that the coolant system may become involved later after significant damage has occured to the engine due to loss of lubrication. The two systems are ideally separate and isolated from oneanother unless the damage that occurs is siginificant enough to impair the other.
So I would not expect an engine that is free of premature wear on the lubrication side to experience impaired coolant flow.
Have you checked whether the temp of the two heater hoses are similarly hot? If they are then the air door is more of a suspect. If not, then air trapped in the core or cooland system corrosion products may be impairing the flow.
Roland

Answer
Hi Steve,
You are welcome. On the heater controls, there is possibly a self test that the mechanic can run to determine if there is an issue with the door or something else. But the procedure depends upon whether you have an automatic temp control or a conventional type of heater control. So if you need that info write back and tell me which type of unit you have.
Roland