2006 BMW 330i loosing coolant and no heat

Téa Larson

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

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

Joey Baker

its a bad thermostat id get them to check it again

Téa Larson

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

Tom Demyan

I"d replace the expansion tank, if the other parts were bad, that is probably your issue. Did you remove the belly pan and get under the car to see where it is leaking? White dry reside is a sign of dried coolant. Any wet spots where you park?

Your Answer

Add photo

Related Questions

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 39,575 nationwide 3 Series listings starting at $888.


Search BMW 3 Series Questions

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 3,910
#2 Robert Charlson
Robert Charlson
Reputation 1,380
#3 Matt Mankinen
Matt Mankinen
Reputation 1,110
View All

Related Models For Sale

Used BMW 5 Series"
674 Great Deals out of 18,879 listings starting at $1,500
Used BMW M3"
99 Great Deals out of 1,892 listings starting at $5,495
Used Mercedes-Benz C-Class"
869 Great Deals out of 32,043 listings starting at $1,900
Used Audi A4"
335 Great Deals out of 12,944 listings starting at $1,500
Used Ford Mustang"
721 Great Deals out of 41,404 listings starting at $900
Used Mercedes-Benz E-Class"
788 Great Deals out of 22,748 listings starting at $1,850
Used BMW X5"
550 Great Deals out of 15,503 listings starting at $1,995
Used BMW 6 Series"
120 Great Deals out of 3,014 listings starting at $5,995
Used BMW 7 Series"
198 Great Deals out of 5,865 listings starting at $2,995
Used Honda Accord"
1,267 Great Deals out of 77,937 listings starting at $1,395
Used Lexus IS 250"
376 Great Deals out of 6,092 listings starting at $4,494
Used BMW 1 Series"
120 Great Deals out of 1,781 listings starting at $3,750
Used BMW X3"
282 Great Deals out of 12,004 listings starting at $3,500

Used Cars For Sale

2017 BMW 3 Series 330i For Sale
872 listings starting at $37,741