S13 KA24de Heater problems.

[Nick_04K]

Heater never gets hot...Ive bled the system multiple times and it hasnt changed. The lower radiator hose is NOT getting hot. I have replaced the thermostat and water pump. What else can this problem be??

[projectRDM]

If the lower hose isn't hot, the thermostat isn't opening. Simple. Rebleed it again, and again.