The main cooling fans are running at 100%.?

2012 FORD ESCAPE
220,000 MILES • 3.0L • V6 • 4WD • AUTOMATIC
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GABOOO
The fans turn on 5 seconds after the car starts, running at 100%. With the help of AI, I was told about AC sensors, which I checked, but the fans didn't turn off. Supposedly, the fans have a control module, but they are wired directly to the relays. My last option is to change the CHT (Cylinder Head Temperature) sensor. What recommendations can you give me? Note: I've searched thousands of videos and can't find that sensor.
Jan 10, 2026 at 6:42 PM
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STRAILER
  • ✓ASE Certified Mechanic
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So if the HVAC system is off the cooling fans are out of the loop. I would use a scanner to help look for codes of a sensor being out of range, (the PCM goes into safe mode with the fans when it see this problem). The scanner should show you the engine temp at a large number, (300f+) even when the engine is cold should us the CHT sensor is bad which is common when this problem happens. Here is a video to help with the scan and readings


CAN SCAN - https://youtu.be/u-4syLc-ifQ

Here is the location of the cylinder head temperature sensor so you can swap it out. Check out the images (below). Please let us know what happens.
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Jan 11, 2026 at 10:40 AM
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