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This answer was rated:

2014 f350 diesel blower motor quit,,, 4 years old,,,,

Hi 2014 f350 diesel...

Hi 2014 f350 diesel blower motor quit,,,

Mechanic's Assistant: How old is the engine? And when was it last serviced?

4 years old,,,, service every 6 months

Mechanic's Assistant: Are you fixing your F350 yourself? What have you tried so far?

Replace 23 fuse and relay

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

Blower motor runs if I hot connect at relay

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Answered in 7 minutes by:
3/24/2018
Kenny Z.
Kenny Z., Ford Senior Master Tech
Category: Ford
Satisfied Customers: 6,075
Experience: Auto Trans, Drivability and Electrical Specialist
Verified

Hello, my name is***** and thanks for your question.

Auto climate control or manual?

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Customer reply replied 4 months ago
Manual

Are you powering pin 5 to get it to work?

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Customer reply replied 4 months ago
Jump from main power wire to main power wire to blower at relay

Have a look at diagram. Remove relay, verify 2 powers and one ground with blower on.

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Customer reply replied 4 months ago
To start this whole picture
Was using air compressor off cigar lighter plug , air compressor overheated, blew fuse..... replaced
Turned on heater.... not working
Replaced relay and blower fuse
Still nothing
Dismounted main fuse box looking for cooked wires, checked dash components wiring and motor wires..all good

OK, need to see what we're missing at relay.

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Customer reply replied 4 months ago
Ok, 3 power.. 3-5 11.5v ...
Customer reply replied 4 months ago
Key and blower switch on
Customer reply replied 4 months ago
3-2 6v

OK.

3 to battery ground should equal battery voltage.

1 to battery ground should equal battery voltage with the key in run.

2 to battery positive should equal battery voltage with blower on.

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Customer reply replied 4 months ago
Pin 3-5 equals
Pin 3-2 less
Customer reply replied 4 months ago
Same results from battery

What about pin 1??

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Customer reply replied 4 months ago
Nothing

Pin 1 is powered by fuse #50 in the underhood fuse box. Should be hot on both sides to ground with the key on.

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Customer reply replied 4 months ago
Wow... I'm getting old....
Thank you very much
Fuse #50 missing some how
Everything working ��

Glad you found it!

If you are satisfied with your answer, please take a moment to rate my service before you go. Experts are not compensated without a positive rating. Providing a rating does not close the question, you can reply or ask additional questions without incurring further charges. Rating my answer positive charges your account the full question value and credits me. Submitting for a refund removes the credit from my account and makes me donate my time and experience for free, which is not my intention. Please only rate positive if you are satisfied and intend on paying for the services you agreed to. Thanks!

Kenny Z.
Kenny Z., Ford Senior Master Tech
Category: Ford
Satisfied Customers: 6,075
Experience: Auto Trans, Drivability and Electrical Specialist
Verified
Kenny Z. and 87 other Ford Specialists are ready to help you
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Customer reply replied 4 months ago
Five stars for you sir ����

Thanks!

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