How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask Dj Your Own Question

Dj
Dj, ASE Certified Technician
Category: Car
Satisfied Customers: 1713
Experience:  ASE Certified Master Technician. 30+ years in the car repair business.
10906483
Type Your Car Question Here...
Dj is online now
A new question is answered every 9 seconds

2004 3.6 v-6 cooling system going into a vacum, Why?

Resolved Question:

2004 3.6 v-6 cooling system going into a vacum, Why?
Submitted: 2 years ago.
Category: Car
Expert:  Dj replied 2 years ago.

Dj :

Hello and thank you for trusting Just Answer with your question. I'm Dj.


 

Dj :

What symptoms are you seeing? You stated that the cooling system is pulling a vacuum. What is it that you are seeing that shows the system is creating a vacuum?


 

Dj :

Dj


 

Customer:
Dj :

My system shows that you are typing but nothing is showing up on the screen? Does it appear to be working on your side?


 

Customer:

no


radiator hoses go flat

Dj :

Is this after the engine cools down?

Dj :

The radiator cap is a two way valve. One way it holds 15 pounds of pressure on the cooling system. This raises the boiling point of the coolant to 260 degrees to protect the engine. The other valve is supposed to release the vacuum the builds when the engine cools down. When this valve opens, coolant is pulled from the coolant recovery tank. This is the part that's not working.


 

Dj :

Either the radiator cap is bad and the second valve is stuck or the hose from the radiator to the coolant recovery tank is plugged or kinked.

Customer:

yes. when I remove the cap they return to shapr


where is the second valve ?

Dj :

[IMAGE][SRC][/SRC][ALT][/ALT][WIDTH]133.50515463917526[/WIDTH][HEIGHT]100[/HEIGHT][STYLE][/STYLE][/IMAGE]


See where it says "vacuum reliefe valve" That's the part thats stuck or defective.

Dj :
Dj :

It's a part of the radiator cap.


 

Customer:

I purchased a new cap earlier today. I have not replaced it yet.


I do not notice a large loss of coolant.

Dj :

You don't have a leak. Just a stuck valve.


 

Dj :

If you had a leak, the hoses wouldn't collapse, you would just suck air into the system.


 

Customer:

Will this couse the system to display a message to check coolant level ?


 

Dj :

Yes is can.


 

Customer:

When this happens is the pump circulating coolant ?


 

Dj :

It won't circulate as much as it should because the hoses are collapsed.

Dj :

But it's still circulating some coolant.


 

Customer:

so the hoses remain collapsed while driving.


 

Dj :

As the engine warms up, the coolant expands and when it does, the hoses will fill out.


 

Customer:

Thank You, XXXXX XXXXX replace the cap.


 

Customer:
Dj, ASE Certified Technician
Category: Car
Satisfied Customers: 1713
Experience: ASE Certified Master Technician. 30+ years in the car repair business.
Dj and 5 other Car Specialists are ready to help you

JustAnswer in the News:

 
 
 
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
 
 
 

What Customers are Saying:

 
 
 
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
< Last | Next >
  • I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry. Stephanie P Elm City, NC
  • used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil Marysville, CA
  • Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff. Jim Castleberry, FL
  • Excellent reply, and also very quick. Really sounds like the Expert knows what he is talking about. I will be back to use your service when I need more help with my RV. Dutch USA
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka-Moose)'s Avatar

    Chris (aka-Moose)

    Technician

    Satisfied Customers:

    846
    16 years of experience
  • http://ww2.justanswer.com/uploads/TE/TedG/2012-6-15_14759_avaLarge.64x64.jpg Ted G.'s Avatar

    Ted G.

    ASE Certified Technician

    Satisfied Customers:

    1596
    20 years auto repair experience, ASE Master Tech, Mechanical Failure consultant, Expert Witness
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    1311
    ASE Master Tech 15+ yrs, AAS Automotive Technology, Factory trained Asian specialist
  • http://ww2.justanswer.com/uploads/AM/amedee/2013-10-24_23656_Amedee1.64x64.jpg Amedee's Avatar

    Amedee

    ASE Master Tech

    Satisfied Customers:

    2367
    ASE Master Tech advanced level specialist
  • http://ww2.justanswer.com/uploads/SU/supermechanic/2013-8-23_03546_500.64x64.jpg Jerry's Avatar

    Jerry

    Master Mechanic

    Satisfied Customers:

    1906
    ASE master, 30+ years. All makes and models. Trouble shooter, shop forman, service manager
  • http://ww2.justanswer.com/uploads/CR/crzydrvr00/2013-11-3_12123_246347.64x64.jpg Richard's Avatar

    Richard

    ASE Certified Technician

    Satisfied Customers:

    942
    12 years Ford Lincoln/Mercury Jaguar dealership as a technician and shop foreman reparing all makes
  • http://ww2.justanswer.com/uploads/ST/Steve7654/2012-6-5_215929_japic800x660.64x64.jpg Steve's Avatar

    Steve

    Auto Service Technician

    Satisfied Customers:

    1980
    25+ yrs experience as a professional working technician; ASE L1 master technician