heater not working rigbt

[atilla_the_fun]

The heater core could be an issue, or the actual in dash unit (where you select the temp and fan speeds) may not be working right

[Y33TREKker]

First things I'd check would be coolant level, coolant mixture, and hose condition during operation to make sure none are collapsed and preventing flow.

But as attila and the following chart mention, blower motor problems could also be causing the lack of heated air circulation.

VX Heating Diagnosis