2006 BMW 330i loosing coolant and no heat

Asked by Tea Mar 15, 2016 at 06:42 PM about the 2006 BMW 3 Series 330i Sedan RWD

Question type: Maintenance & Repair

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!

3 Answers

Tea answered 8 years ago

I just had it changed, do you think it could really be that again? Sorry, just curious! :)

Mark helpful

Elbanhawy answered 5 years ago

Could be a bad heater core, with a slow leak, check where the gas pedal is if you find any moisture, it could be a slow leaking heater core

Mark helpful

Your Answer:

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