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Fan clutch not working

Tiny
SPORTRAC
  • MEMBER
  • 2007 FORD EXPLORER SPORT TRAC
  • 4.6L
  • V8
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
My truck has been running hot, and the fan clutch stopped engaging. I replaced the fan clutch, water pump and thermostat. Fan clutch still not working and vehicle still runs hot when in traffic. Is there a switch or sensor to replace?
Saturday, March 23rd, 2019 AT 5:59 PM

8 Replies

Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,005 POSTS
I found a wiring diagram for your rig's fan in "Prodemand" (bottom of this answer)

Here's some info that might also aid you from 2carpros "Repair Guides" (found at the top right of our pages - I'll provide the link).

Check out the "engine cooling" section in this link.

https://www.2carpros.com/articles

Keep us posted with progress on your repair.

The Medic
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Saturday, March 23rd, 2019 AT 7:15 PM
Tiny
SPORTRAC
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  • 5 POSTS
Is there a component that tells the clutch fan to engage, my fuses are good. Is there a switch or switch to replace?
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Sunday, March 24th, 2019 AT 11:24 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good morning

The coolant sensor sends a signal to the PCM for turning on the fans depending on the temperatures.

It is by the thermostat housing It is a two wire sensor that controls this operation. Some of them are located under the front of the intake manifold as well.

Roy
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Monday, March 25th, 2019 AT 3:20 AM
Tiny
SPORTRAC
  • MEMBER
  • 5 POSTS
The 4.6 V8 doesn’t have electric fans, only a clutch fan. Is that controlled by the temperature sensor as well?
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Monday, March 25th, 2019 AT 9:18 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
If there are no wires to it, no. If there are wires to it, yes. They will be controlled by coolant temperature and the AC operation.

If no wires, it will be controlled the heat build-up under the hood. It has Freon inside the clutch to make it work.

Roy
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Monday, March 25th, 2019 AT 9:42 AM
Tiny
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  • MEMBER
  • 5 POSTS
Thank you for the information, I’m going to replace the sensor and looks like I might have to replace the clutch fan again as well. Looks like some Freon oozed out of it.
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Monday, March 25th, 2019 AT 10:17 AM
Tiny
SPORTRAC
  • MEMBER
  • 5 POSTS
Thank you for the information, I’m going to replace the sensor and looks like I might have to replace the clutch fan again as well. Looks like some Freon oozed out of it.
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Monday, March 25th, 2019 AT 10:17 AM
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
You are welcome.

Always glad to help.

Roy
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Monday, March 25th, 2019 AT 10:19 AM

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