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 Drew Your Own Question

Drew
Drew, Super Mazda Tech.
Category: Mazda
Satisfied Customers: 2518
Experience:  19 yrs. experience. Mazda Senior Certified Tech, with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.
Type Your Mazda Question Here...
Drew is online now
A new question is answered every 9 seconds

Mazda: Mazda expert only 2006 Mazda 6 cooling fans dont come

Customer Question

Mazda expert only 2006 Mazda 6 cooling fans don't come on
Submitted: 1 year ago.
Category: Mazda
Expert:  Drew replied 1 year ago.
Welcome to Just Answer. My name is XXXXX XXXXX X will be glad to assist you.

I suspect that you have a faulty cooling fan control module. This is the black box that is bolted to the fan shroud on the drivers side. 99% of the time, this is the case. There used to be a recall for it but it has now expired.

It is very common for this module to fail.

You can test the fan to verify that it is ok by connection battery B+ and ground directly to the fan and see if it operates.

I can also give you a long, in depth diagnosis pinpoint test to diagnosis the system but it will require a lot of time and electrical diagnosis tools.

Make sure all fan, module and relay electrical connections are clean and tight with no wiring damage.

If you turn the AC on the fan should come on immediately.

Please let me know if you have any additional questions by hitting the reply button.

Thanks
Drew
Customer: replied 1 year ago.

i still might have more questions but i will try that what temp should fan come on and should both fans come on with ac

Expert:  Drew replied 1 year ago.
Cooling Fan Control System InspectionCooling fan system operation (at idle)


Engine condition

Fan relay No.1

Fan relay No.2

Fan relay No.3

Fan relay No.4

Cooling fan motor No.1

Cooling fan motor No.2

Engine coolant temperature below 100°C {212°F}

OFF

OFF

OFF

OFF

OFF

OFF

Engine coolant temperature above 100°C {212°F} (until 97°C {208°F})

ON

OFF

OFF

ON

Low speed

Low speed

Engine coolant temperature above 108°C {233°F} (until 105°C {221°F})

ON

ON

ON

ON

High speed

High speed

A/C and fan switches are on.

Refrigerant pressure switch (middle pressure) is off.

ON

OFF

OFF

ON

Low speed

Low speed

Refrigerant pressure switch (middle pressure) is on.

ON

ON

ON

OFF

High speed

Middle speed

ECT sensor malfunction

ON

ON

ON

ON

High speed

High speed


Here is the cooling fan inspection operation information.

Thanks
Drew
Drew, Super Mazda Tech.
Category: Mazda
Satisfied Customers: 2518
Experience: 19 yrs. experience. Mazda Senior Certified Tech, with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.
Drew and 6 other Mazda Specialists are ready to help you
Customer: replied 1 year ago.
Changed fan module fans work but temp gauge is going all over the place car seems hot could thermostat be stuck also have no heat
Customer: replied 1 year ago.
Help
Expert:  Drew replied 1 year ago.
Sorry for the delay. Yes it sounds like your thermostat is stuck closed or you have a large air bubble in the cooling system.

If the upper hose is hot but lower radiator hose is not close to the same temperature, I would replace the thermostat.

Thanks
Drew
Customer: replied 1 year ago.
How to replace thermostat it's a 6 cylinder any air bleaders
Expert:  Drew replied 1 year ago.
I suggest using a Mazda ONLY thermostat. I have seen several aftermarket thermostats cause problems. You need to make sure you install it with the "jiggle pin" vent facing up.

Here is the procedure to replace the thermostat. No vent or air bleeds on this vehicle. Just let the engine run at idle with the heater set to hot and vent. During warm up, hold rpm's at 1500-2000 every five minutes to help circulation. Once hot air is felt out the vent, let idle for additional 10 minutes to bleed any trapped air and make sure you still have good heat blowing out vents. If not increase rpm's to circulate trapped air out.

Thanks
Drew

. Disconnect the negative battery cable.
2. Remove the air cleaner.
3. Drain the engine coolant.
4. Remove in the order indicated in the table.
5. Install in the reverse order of removal.
6. Add the engine coolant.
7. Inspect the engine coolant leakage.

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here
View Full Image

Attachments are only available to registered users.

Register Here



1

Upper radiator hose

2

Lower radiator hose

3

Thermostat cover

4

O-ring

5

Thermostat


Thermostat Installation Note (AJ)
1. Install the thermostat into the thermostat case with the jiggle pin at the top.

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here

Attachments are only available to registered users.

Register Here
View Full Image

Attachments are only available to registered users.

Register Here

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
  • Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help. Mary C. Freshfield, Liverpool, UK
 
 
 

Meet The Experts:

 
 
 
  • Drew

    Super Mazda Tech.

    Satisfied Customers:

    2176
    #1 rated Mazda technician. 17 yrs. experience as a shop owner. Mazda Certified with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.
< Last | Next >
  • http://ww2.justanswer.com/uploads/supermazdatech/2010-8-24_54425_Self_Portrait.jpg Drew's Avatar

    Drew

    Super Mazda Tech.

    Satisfied Customers:

    2176
    #1 rated Mazda technician. 17 yrs. experience as a shop owner. Mazda Certified with Ford, Linc. & Merc. experience. ASE L1 Advanced Certified Master Tech.
  • http://ww2.justanswer.com/uploads/MA/mazdamaster577/2012-6-7_13242_IM001017.64x64.JPG mazdamaster577's Avatar

    mazdamaster577

    Master Technician

    Satisfied Customers:

    633
    mazda master/shop foreman for 15 years.
  • http://ww2.justanswer.com/uploads/joecamel90/2008-11-13_03615_head_shot.jpg George H.'s Avatar

    George H.

    ASE Certified Technician

    Satisfied Customers:

    354
    15+Years
  • http://ww2.justanswer.com/uploads/MI/mikeamechanic/2013-4-2_175558_photo.64x64.JPG Mike Kelly's Avatar

    Mike Kelly

    Mazda Mechanic

    Satisfied Customers:

    269
    17 years experience as an auto mechanic, foreign and domestic. 5 years running my own repair business.
  • http://ww2.justanswer.com/uploads/maddogtech/2008-12-13_185836_ed1.JPG Mazda Ed's Avatar

    Mazda Ed

    ASE Certified Technician

    Satisfied Customers:

    264
    ASE Certified Mazda Master Technician
  • 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:

    247
    16 years of experience
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Mazda Tech -

    Satisfied Customers:

    232
    18+yrs experience. State Inspector and Mazda Diagnostics