Could have a clogged line feeding the heater core. Disconnect return hoses from the heater core and verify coolant is flowing through the core.
have the heater core cehecked out
The heater on a Mercedes c200 will stop working if the heater core is blocked. It allows hot coolant from the engine to be used in heating the cabin.
Any of the following................... 1. Low coolant level. 2. Clogged heater core. 3. A/C heater controller bad. 4. A/C heater doors not working. 5. Vacuum problems........
sounds like the heater core is out or you have an air bubble in the cooling system
Guess that wasn't it, huh? Sorry, no offense intended. Is the coolant full? is the thermostat working, heater core plugged? Need more info to go further, what else has been replaced? why did you replace the heater control valve? based on what?
Follow the heater hoses from the engine. They will lead right to the heater core.
sounds like your heater core is plugged up with gunk install a new one
Heater Airbound? Heater control cable not working? Heater core plugged?
# Disconnect negative battery cable # Drain the cooling system # Working in the engine compartment disconnect the heater hoses from theheater control valve # Remove instrument panel and the center console # Remove the heater controls and disconnect the heater hoses under the dash where they connect to the heater core # Label and detach the air ducts,wiring and controls still attached to heating unit # Unbolt the heating unit and detach it from the car # Remove the screws and clips and separate the two halves of the housing.Take out the old heater core and install new unit
Fuse- Blower Motor- Wiring- Selector switch fail- i8f you still have heat to the heater core, if the heater core is cold, and the mottr is still hot... change the thermostat
heater core stopped up, heater control vavle not working, controls under dash not working, low in coolant, theromstant, radiator not flowing properly, water pump.
that has a lot to do with.if your heater core is pluged up you wont get any heat out of it.