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What sensor triggers the cooling fans to come on... Fan

works... Don't know which sensor...
what sensor triggers the cooling fans to come on... Fan works... Don't know which sensor could be bad..
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Answered in 2 minutes by:
3/12/2018
Dan
Dan, Technician
Category: Ford
Satisfied Customers: 25,674
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified

Hello again, did you replace the cylinder head temp sensor?

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Customer reply replied 1 month ago
Not yet... will do so... but don't want to do brute force troubleshooting... Replace, replace, replace and hope I get it..... Expert opinion, is it CHT sensor?....

It is either the CHT or the PCM. So if CHT doesn't fix problem then you would want to verify wiring between CHT and PCM are good then replace the PCM. CHT is the most common cause. Let m know how it goes or if you have more questions. Thanks.

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H​ere is also a wiring diagram for CHT to help with testing, let me know if you have questions. Thanks.

-

https://www.dropbox.com/s/jnc3en5l6jvyrdr/chts.pdf?dl=0

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Customer reply replied 1 month ago
Will replace CHT sensor... I will follow up to let you know... Appreciate the help... I do have a mechanics background... Currently an engineer... Working with a garage, but just don't know this system...

No problem, keep me updated. Thanks.

Dan
Dan, Technician
Category: Ford
Satisfied Customers: 25,674
Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database
Verified
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Dan
Dan
Dan, Technician
Category: Ford
Satisfied Customers: 25,674
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Experience: Independent Shop Experience, 2 Year Automotive Diploma, & Access to Information Database

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