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 sprinkles08 Your Own Question

sprinkles08
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 16851
Experience:  ASE Master and Advanced level certified. Factory trained with 14 years dealership experience
9825021
Type Your Car Question Here...
sprinkles08 is online now
A new question is answered every 9 seconds

Hi I have a 2007 grand jeep cherokee laredo 3.7L v-6 I replaced

Resolved Question:

Hi I have a 2007 grand jeep cherokee laredo 3.7L v-6 I replaced water pump and thermostat due to the water pump went the pulley was flopping like crazy but anyway after i replaced them it blows cold air out the heater no hot air and it will overheat took it apart 3 times did a flush and everything looks good but didnt fix problem check fluid no oil in coolant fluid checked oil no coolant on oil dipstick was is wrong just cold air and keeps overheating
Submitted: 1 year ago.
Category: Car
Expert:  sprinkles08 replied 1 year ago.
Hello and welcome to JustAnswer!

Can you explain how you are filling and bleeding the cooling system?

Customer: replied 1 year ago.

filled with 50/50 coolant try to bleed by cap what for coolant to get low during idle after it bubbles air out then topped off then put cap back on did this step 4 times no more bubbles then couldnt understand why no heat i also thought it might be air so loosed water pump bolts to see and coolant come out fast so put back together and bleed again still nothing

Expert:  sprinkles08 replied 1 year ago.
If you weren't having any problems before replacing the water pump then your lack of heat and overheating are due to air in the system. It has become trapped because the system wasn't properly bled when filled.

Follow the top radiator hose to the timing cover and you will find a 5/16" allen pipe plug. This is the bleed plug and it must removed when filling the cooling system.

With the engine cool now remove the radiator cap and remove the bleeder plug. Add coolant until a solid stream of coolant comes from the plug with no air. Once there is solid coolant and no air then you can reinstall the plug.

With the coolant level near full, leave the radiator cap off and start the engine. Let the engine run until it's at full operating temperature and bubbles are no longer seen coming up, which will be at least 10-15 minutes, longer if it's cold outside.

Since there is air trapped in the heater core you may also need to raise the engine RPM's while the cap is off to help force coolant back into the heater core.

Once you have heat, it's at full operating temperature and no more bubbles are coming up then you can then install the radiator cap and go drive it, you should find all your problems are gone.


Customer: replied 1 year ago.

ok thanks for the help

Expert:  sprinkles08 replied 1 year ago.
You're welcome!

Please rate my performance only when you are satisfied with my help. If for any reason you feel you cannot rate my help with at least "Ok Service" or better please click the Reply to Expert link and let me know any further questions you have.

Good luck with your Jeep!
sprinkles08, ASE Certified Technician
Category: Car
Satisfied Customers: 16851
Experience: ASE Master and Advanced level certified. Factory trained with 14 years dealership experience
sprinkles08 and 3 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