Why would my coolant chamber or reservoir be bubbling?

Asked by Oct 09, 2014 at 12:27 PM about the 2002 Volkswagen Passat GLX 4Motion

Question type: Maintenance & Repair

I just had the check coolant light come on the dashboard and I went to Valvoline for them
to check and put more into it. I noticed it took a while and the person stated that it was
boiling hot with steam coming out of it. I was wondering what would be the possible cause
or causes for this?

4 Answers

32,955

A bad thermostat. Bad radiator cap. Plugged up radiator. Blowen. Head gasket. Start there.

4 out of 4 people think this is helpful.

Mark is right, but I lean to bad cap most likely. If it is weak, the pressure will be released in to overflow tank, or reservoir, and boil because it's not under pressure. Hopefully that's what it is, other stuff he listed, and a good list it is, is more expensive, in the order he has it

1 out of 1 people think this is helpful.
32,955

It was chewy but tolerable. I found a brand of hot dogs from Australia that are real good! And Hunts Baked Beans but in a tin pouch! We have satellite TV and there must be like 5 or 6 food channels on the darn thing. I'll be playing with my son and out of the corner of my eye I'll catch an Out Back Steak House add........ For Singapore :>( !

2 out of 2 people think this is helpful.

Way cool!

Your Answer

Add photo

Related Questions

  • where is the relay located for the secondary cooling fan the one that delays and comes on when hot 1 answer

    my secondary fan that delays and comes on when hot is not coming on and causing the fluid to bubble out the radiator resevoir. the car isnt indicating that it is gettng hot other than needing to add f...

    2001 Volkswagen Passat GLX Wagon

    -

    Maintenance & Repair

  • I have a 2001 passat 1.8T that overheats 5 answers

    Replaced thermostat, coolant temp sensor and coolant flange. The car will run great just pushes coolant out the overflow on the recovery tank then overheats.

    2001 Volkswagen Passat GLS

    -

    Maintenance & Repair

  • Has anyone had problems with tires losing air excessively every few days, particularly in cold weather? 27 answers

    The dealer cannot determine why the tires lose air. They have taken off wheels and sanded them to ensure good seal yet the problem persists. Have to put in air every few days. No problems with ti...

    2007 Volkswagen Passat 3.6L 4Motion Wagon

    -

    Maintenance & Repair

  • How do you get all the air bubbles out of the cooling system? 1 answer

    engine runs hot at idle and cool air from heater... fast idle and engine cools down and hot air from heater. trying to get the air out of the cooling system after flushing system.

    1983 Volkswagen Vanagon

    -

    Maintenance & Repair

  • Air bubbles 1 answer

    I got a volkswagen microbus 2.6lt, 1996 model. How do i get rid of all the air bubbles in the cooling system. Some guys told me that the engine must be higher than the radiator, some told me the rad...

    Volkswagen Vanagon

    -

    Maintenance & Repair

Passat

Looking for a Used Passat in your area?

CarGurus has 21,458 nationwide Passat listings starting at $1,450.

ZIP:

Search Volkswagen Passat Questions

Volkswagen Passat Experts

#1 tenspeed
tenspeed
Reputation 1,220
#2 Tom Demyan
Tom Demyan
Reputation 1,140
#3 valeriewalk
valeriewalk
Reputation 1,000
View All

Related Models For Sale

Used Volkswagen Jetta
330 Great Deals out of 33,914 listings starting at $700
Used Honda Accord
699 Great Deals out of 83,202 listings starting at $500
Used Toyota Camry
852 Great Deals out of 90,788 listings starting at $1,200
Used Audi A4
198 Great Deals out of 10,847 listings starting at $1,333
Used Nissan Altima
795 Great Deals out of 77,604 listings starting at $2,700
Used BMW 3 Series
1,071 Great Deals out of 34,811 listings starting at $900
Used Volkswagen GTI
90 Great Deals out of 5,877 listings starting at $2,000
Used Volkswagen Golf
27 Great Deals out of 2,276 listings starting at $1,900
Used Honda Civic
482 Great Deals out of 81,845 listings starting at $558
Used Hyundai Sonata
537 Great Deals out of 50,015 listings starting at $1,300
Used Nissan Maxima
278 Great Deals out of 26,070 listings starting at $2,300

Used Cars For Sale

2017 Volkswagen Passat For Sale
11 Great Deals out of 12,891 listings starting at $14,859
2016 Volkswagen Passat For Sale
19 Great Deals out of 1,444 listings starting at $11,987
2015 Volkswagen Passat For Sale
45 Great Deals out of 2,443 listings starting at $8,495
2014 Volkswagen Passat For Sale
23 Great Deals out of 825 listings starting at $6,950
2013 Volkswagen Passat For Sale
29 Great Deals out of 948 listings starting at $6,500