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Heat or ac fan wont shut off. Off switch does not shut off.

Heat or ac fan...

Heat or ac fan wont shut off. Off switch does not shut off. Fan on high speed no control. only way to shut off is turn vehicle off.. 2007 ford expedition

Mechanic's Assistant: Have you checked the coolant level? Has there been any leaking from the hoses?

No leaks did not check level was checked ok with oil change 6 weeks ago

Mechanic's Assistant: Are you fixing your Expedition yourself? What have you tried so far?

Yes, nothing just happened yesterday

Mechanic's Assistant: Anything else you want the mechanic to know before I connect you?

No other symptoms i know of. 198,000 miles.good shape other than rust under doors rocker panels big time.

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Answered in 8 minutes by:
11/14/2017
Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,312
Experience: Automotive Instructor at Palm Beach State College
Verified

Hi, My name is Jay

This problem is caused by the blower motor speed controller in the blower a/c case behind glove box is shorted out and may require replacing connector with the blower controller (blower resistor)

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Here is directions to replace the resistor blower controller. Also am including a technical bulletin for possible repair to wiring when replacing the blower module.

https://www.dropbox.com/s/1tkuaqhtxl1wscg/2007%20ford%20expedition%20blower%20resistor.pdf?dl=0

https://www.dropbox.com/s/33r38luff46v3gc/2007%20ford%20expedition%20blower%20tsb.pdf?dl=0

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Customer reply replied 7 months ago
Thanks, ***** ***** be able to try until later today or tomorrow will advise results. Where can i buy the resistor needed?

Dealer will have it with the connector. You can try the local parts store but not sure if they will even have it.

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Customer reply replied 7 months ago
Thanks, ***** ***** call to make sure I get it before starting the repair. Any part number or just ask for 2007 Ford Expedition resistor blower controller?
They will ask for Vin number at dealership so you get correct one for your vehicle. Makes a difference of you have automatic or manual a/c controls.
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Customer reply replied 7 months ago
Thanks, ***** ***** automatic I believe. no knobs, rocker switches for fan, AC direction, heat seat under LED panel.

Yes it is automatic a/c controls. I would recommend dealer to get correct part and connector as needed.

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Customer reply replied 7 months ago
Thanks is the part expensive?

I am not positive on the price now but it was about $160 the last time I had to replace one a couple years ago. Prices change and your location also may have lower or higher costs.

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The parts manual says it is $138 but i find it is sometimes low due to price increases.

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If you have no other questions for me then can you please enter a 5 star rating so i get credit for assisting you today. Thanks.

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Customer reply replied 7 months ago
A little confused how many parts do I need before I start. Just the bloert motor speed controller or the wiring kit?
Thanks

Just replace the blower controller and check wiring connector and replace if it needs it only.

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Customer reply replied 7 months ago
Thanks

My goal is to give you the best experience possible! I hope I have earned a 5 star rating! Please remember to rate my service by selecting the 5 stars at the top of the screen before you leave today. If you need more assistance, please use the reply box and let me know.

Jaybird61
Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,312
Experience: Automotive Instructor at Palm Beach State College
Verified
Jaybird61 and 87 other Ford Specialists are ready to help you
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Jaybird61, ASE Certified Master Technician
Category: Ford
Satisfied Customers: 2,312
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