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 Chuck Your Own Question

Chuck
Chuck, ASE Certified Technician
Category: Mercury
Satisfied Customers: 2100
Experience:  33 Years experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
Type Your Mercury Question Here...
Chuck is online now
A new question is answered every 9 seconds

mercury Grand Marquis LS my ac blower motor has stopped working.

Resolved Question:

my ac blower motor has stopped working. There is power to the wire harness and it draws more amps as you increase blower speed manually. could it be the resister? I would not want to pull it if that is not the culprit. big job. I PURCHASED A NEW MOTOR AND IT DOES NOT WORK EITHER.
Submitted: 3 years ago.
Category: Mercury
Expert:  Chuck replied 3 years ago.

Chuck :

What type system do you have is it electronic temp control or manual?

Customer:

I believe it is electronic. It has the automatic feature.

Chuck :

Is it digital or does it have knobs on the control head?

Customer:

It is digital

Chuck :

Ok your problem is going to be the blower speed controller.You can confirm this by grounding the orange and red wire at the blower motor,if it works then your problem is the controller.

Customer:

Do't know if I can distinguish the color of wire since they are ecased in the harness. How would I ground them?

Chuck :

You can just take a jumper wire and hook it to a good metal ground under the dash and then on the connector at the blower motor you should have a pink/white wire which is powe and the orange/red wire which goes to the blower speed controller. Or you can go under hood and disconnect the blower speed controller and then ground the orange/red wire there.

Chuck :

Do you have power to the motor?

Customer:

I have already remove the old motor. neither the old motor nor the new one work, but on a voltage meter, it draws more amps as I manually change the blower settings at the dash. Where is the speed controller located?

Chuck :

Here is a link to the shop manual on replacing the controller http://www.mediafire.com/?51cq78ecfaea9aa

Customer:

Thanks

Chuck :

Here is a copy of the wiring schematic also to help

Chuck :

The controller is under the hood on the passenger side in the side of the heater housing next to the heater hoses if the pic is not clear to you.

Chuck :

You will want to let it cool off for awhile before messing with it

Chuck :

gets pretty hot there at the hoses and also the back of the motor

Customer:

thanks for your help. I,ll give it a try.

Chuck :

sound good

Chuck, ASE Certified Technician
Category: Mercury
Satisfied Customers: 2100
Experience: 33 Years experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
Chuck and 2 other Mercury 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:

 
 
 
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
< Last | Next >
  • AlvinC answered a question about my Ford truck that only someone with an in-depth knowledge of his subject would have known what was going on. Rich D USA
  • Because of your expertise, you armed me with enough ammunition to win the battle with the dealer. They are installing a fuel filter and fuel pump at no charge to me. Molly USA
  • I needed help with my car on Saturday morning....got a response in 5 minutes, and it was the perfect solution. Thanks again to your service. Jason V. Kirkland, WA
  • I do know, after going though this with JustAnswer, that I can somewhat trust my mechanic but I will always contact you prior to going there. BR New Jersey
  • 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
  • This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!! Alex Los Angeles, CA
  • Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult. GP Hesperia, CA
 
 
 

Meet The Experts:

 
 
 
  • Ron

    ASE Certified Technician

    Satisfied Customers:

    1601
    ASE Certs and Ford Certs
< Last | Next >
  • http://ww2.justanswer.com/uploads/FO/fordguy4u/2011-12-17_222940_HPIM1257.64x64.JPG Ron's Avatar

    Ron

    ASE Certified Technician

    Satisfied Customers:

    1601
    ASE Certs and Ford Certs
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka- Moose)'s Avatar

    Chris (aka- Moose)

    Mercury Technician

    Satisfied Customers:

    1399
    16 years experience with Mercury
  • http://ww2.justanswer.com/uploads/JM/jmcdo28/2012-2-23_01655_resized.64x64.jpg John Mc's Avatar

    John Mc

    Mercury Technician

    Satisfied Customers:

    403
    19 years Ford Lincoln Mercury experience
  • http://ww2.justanswer.com/uploads/wmarti7/2009-4-18_04332_Avatar.jpg Chuck's Avatar

    Chuck

    ASE Certified Technician

    Satisfied Customers:

    287
    33 Years experience,Ford Senior Master,ASE Master,L1 Advanced Engine Performance
  • http://ww2.justanswer.com/uploads/scottz136/2008-12-09_220350_js640_p1010013.jpg scottz136's Avatar

    scottz136

    Mercury Technician

    Satisfied Customers:

    260
    senior master lincoln mercury tech.
  • http://ww2.justanswer.com/uploads/TI/tim37857/2011-10-28_23053_S6301814.64x64.JPG Tim's Auto Repair's Avatar

    Tim's Auto Repair

    mechanic

    Satisfied Customers:

    257
    Have owned a repair shop for 25 yrs.
  • http://ww2.justanswer.com/uploads/DR/drivefast1971/2012-1-12_172422_0009051tQKh.64x64.jpg Ron Z.'s Avatar

    Ron Z.

    - Mercury Tech -

    Satisfied Customers:

    197
    18+yrs experience. State Inspector and Mercury Diagnostics