W202 engine not reaching 80c on winter
questions like a good diagnostician would. Try dialoging with one of them (or try several).
When I do that, the answers point mainly to thermostat or coolant temperature sensor. I read you've replaced the thermostat 3 times
but the symptoms of low gauge reading and little cabin heat generally points to a thermostat stuck open. Are you confident all air was
bled from the coolant system after replacing the thermostat? Using oem, mahle, behr, wahler thermostat?
I am not sure if this will apply to your thermostat, there is a procedure to test a thermostat described
at charm.li for the 2000 c280 (112 engine).
Mercedes Benz>>2000>>C 280 (202.029) V6-2.8L (112.920)>>Repair and Diagnosis>>Engine, Cooling and Exhaust>>Cooling System>>Thermostat>>Testing and Inspection








