2006 BMW 330i loosing coolant and no heat
My 330i is now loosing coolant and the heater isn't
working, it just blows cold air. I've already replace
the thermostat, water pump, temp sensor, and
upper radiator hose. I haven't noticed any coolant
leaks but I could have missed it. It doesn't really
overheat, I did get the amber warning signal once,
but that was it. The cooling fan tends to get loud
and then it will go away after a while. My expansion
tank gets bone dry. I don't think I have a blown
head gasket, but if you guys can give me some
more warning signs of a blown head gasket, I'd
appreciate it. Other than that, I have no clue what it
could be, unless my water pump failed again, but I
was replaced about a week ago. Any advice would
be amazing!
