2006 BMW 330i loosing coolant and no heat

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

30

its a bad thermostat id get them to check it again

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

242,465

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

  • 2006 BMW 330i loosing coolant and no heat 3 answers

    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 co...

    2006 BMW 3 Series 330i

    -

    Maintenance & Repair

  • Issue starting my 2006 330i. 3 answers

    When I hit the ignition button, engine is slow to turn over, but ultimately starts. Happening more often (coinciding with weather getting colder) and the pace of turning over is getting slower. This...

    2006 BMW 3 Series 330i

    -

    Maintenance & Repair

  • I have a 2006 BMW X3. The coolant sensor is lighting up in absence of a problem. What's the problem? 2 answers

    I replaced the sensor a month ago and it was fine for about 3 weeks and is now lighting up again. It's intermittent, but on more often now. Each time I've checked the coolant, it's been full and no ...

    2006 BMW 3 Series

    -

    Maintenance & Repair

  • BMW coolant light on and hesitates around 40 mph 1 answer

    have a 2010 BMW 328i 2 door coup with around 95,000 miles.. about a week ago the coolant light came on and then a couple days later my car started stalling a little bit nearly every time I would a...

    2010 BMW 3 Series 328i Coupe

    -

    Maintenance & Repair

  • 2004 BMW 330I WONT START- OIL LIGHT COMES ON 1 answer

    My 2004 BMW 330I will not start. The oil light comes on then battery. It was working until I changed the bushings and then took it off the ramps. Not sure what happened..

    2004 BMW 3 Series 330i

    -

    Maintenance & Repair

3 Series

Looking for a Used 3 Series in your area?

CarGurus has 30,762 nationwide 3 Series listings starting at $1,000.

ZIP:

Search BMW 3 Series Questions

BMW 3 Series Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,680
#2 Robert Charlson
Robert Charlson
Reputation 1,580
#3 Michael Branan
Michael Branan
Reputation 1,210
View All

Related Models For Sale

Used BMW 5 Series
482 Great Deals out of 15,996 listings starting at $1,500
Used BMW M3
41 Great Deals out of 1,327 listings starting at $4,660
Used Mercedes-Benz C-Class
497 Great Deals out of 25,607 listings starting at $1,900
Used Audi A4
308 Great Deals out of 10,500 listings starting at $1,200
Used Ford Mustang
638 Great Deals out of 46,710 listings starting at $750
Used Honda Accord
1,040 Great Deals out of 77,387 listings starting at $999
Used BMW X5
440 Great Deals out of 15,846 listings starting at $2,495
Used Mercedes-Benz E-Class
387 Great Deals out of 19,521 listings starting at $1,995
Used BMW 6 Series
83 Great Deals out of 2,841 listings starting at $6,500
Used BMW 7 Series
174 Great Deals out of 6,135 listings starting at $2,999
Used BMW 1 Series
41 Great Deals out of 1,026 listings starting at $6,800
Used Dodge Charger
532 Great Deals out of 29,909 listings starting at $2,000
Used BMW X3
377 Great Deals out of 13,251 listings starting at $2,999

Used Cars For Sale

2017 BMW 3 Series 330i For Sale
18 Great Deals out of 2,044 listings starting at $32,984

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.