No heat, whats wrong
 

Hi, Im new to the forums, i have a 1996 850 and im hoping someone can help me with a problem , have no heat, the blower works, the thermostat is opening and closing, i have no leaks in the heater core, flushed system, still no heat, has anyone had this same problem and could know what might be wrong, any help would be greatly appreciated

Has the system been bypassed? LOL

it was working before, it just stopped yesterday

When you turn both temperature knobs to hot does heat come out of any vent? These had a two zone heating unit, so check to see if heat comes out of the drivers side vents and the passenger side vents.