2002 Protege5 w/ 95,000 miles on it.
I got no heat. Used a scan tool(Snap-On SOLUS-PRO) to measure engine coolant temp(ECTS) Was up at 205 Degrees F. Cooling fans came on, cooled it down a bit. Thermostat seems to be doing its job, Blower motor fans are working properly.
The Heater hoses that run into the fire wall(heater core) are both hot as best I can tell.
However, the interior temp control dial doesn't seem to be changing the temp.

Is there an adjustment I can do? Or is there a part that is failing?

Thanks for all/any insight.
-North42g

 

You could try turning your ignition on and everything in the car that makes noise off and turn the switch and listen for any noise, or find the valve for the heater core.

When was the last time you flushed the radiator? Could also be plugged up...