Just as the title says I get absolutely no heat from my heater. The car does not over heat, and when I check the radiator it hasn't lost any antifreeze. So my question is what is going on here? Could it be that the heater core is clogged? Would a drain and flush clear the problem? I can turn on the heater and I feel air flowing, but its just cold.

 

do you got these hooked up?

 

These two? They seem to be hooked up. Could they have failed by chance? Maybe I can try to replace them?

 

Feel the hoses at the heater core while temp selector set to hot, no blower. if one hose is warm/hot, the other cool, core is not circulating.

Heater bypass valve, as youshow above, only works on full cold (applies vacuum to bypass core). Set at warm-hot, pull vacuum line at valve. If you have vacuum on line, hvac vacuum valve is bad (on control unit in car).

 

What temperature do you get on the gauge on the dash under normal driving circumstances?

 

180-200 ish driving, it can rise quite high while sitting (240ish), but I checked and the fans do come on and once I get moving again it goes back to around 200ish.
Now when I got the car it had heat. Very good in fact, but it over time (in a span of about 4 months) it tapered off in heat until now there's nothing.