Intermittent fan clutch engagement

2006 MERCURY MOUNTAINEER
180,000 MILES • 4.0L • V6 • 4WD • AUTOMATIC
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DMAURER4
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  • 3 POSTS
Can the fan clutch engagement issue be intermittent if going bad or would it always be engaged if bad or failing?
Sep 15, 2020 at 11:39 AM
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JACOBANDNICKOLAS
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Hi,

It can be intermittent. It can be a fluid issue or an electrical issue since the fan is electrically actuated. The fan clutch has three main elements, a fluid chamber, reservoir chamber, and clutch actuator valve/fan speed sensor. The actuator valve and speed sensor are controlled by the power-train control module.

I attached a pic below. Check to make sure the connection at the actuator is clean and tight.

Also, take a look through this link. It describes common symptoms related to a failing fan clutch.

https://www.2carpros.com/articles/fan-clutch-symptoms

Let me know if this helps or if you have other questions.

Take care,
Joe
Sep 15, 2020 at 6:04 PM
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DMAURER4
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Thank you! This was very helpful! Greatly appreciate the help.
Sep 16, 2020 at 5:15 AM
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JACOBANDNICKOLAS
  • CERTIFIED EXPERT
  • 110,175 POSTS
Hi,

You are very welcome. Please feel free to come back anytime in the future if you have questions or need help.

Take care,
Joe
Sep 16, 2020 at 5:16 PM
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DMAURER4
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Thanks! I definitely will!
Sep 16, 2020 at 6:47 PM