I have had this problem for two (2) years now and still haven't found the problem.
I have absolutely no heat in my car. I have replaced the blower motor, fuses, blower resistor relay and finally the thermostat. Still absolutely no heat. I get I guess what you call luke warm air but not enough to keep me warm during the winter. Is there anything else I should check or is my car not meant to keep me warm anymore???????

 

When the engine is fulled warmed & hot, are both the heater hoses hot?

 

Idk I cant get any where near the hoses when she's heated up. Too much stuff in the way!

 

Is your thermostat functioning properly?

 

flush the cooling system and back-flush the heater core.

 

Again! How can I do that when I can't access the hoses. Also I can't seem to find these hoses. I see a metal one for the a/c but nothing else.

 

If you want to give me schemadics on where these hoses are then fine I'll try that but I looked under the hood yesterday and couldn't find them. All I was able to find is the hose for the a/c.

 

Thermostat was recently replaced so that's fine, plus if it wasn't functioning properly my car would overheat and it doesn't do that! I guess I'm just gonna have to dress warmer when driving my car in the winter.

 

I don't think you are looking hard enough. There are 2 hoses going from the engine back to the firewall going to the heater core.

Oh, the warm clothing is not a bad idea at all!