Engine fan seems to be stuck on 6.7L

[MrFancypants]

Hate to bust the news to you but not true -- unless of course, my clutch is simply just gone but my diagnoses did not indicate such.

I don’t disagree that there are probably multiple root causes. Fan clutch issues are all over the place. Programming could definitely vary by model year.

All I know is mine behaves differently in the summer and the only improvement I have found (which doesn’t totally eliminate the problem) has been the recirc. I tested it multiple times and it makes a difference in how long it takes for the clutch to unstick in the summer.

Not sure if there’s a PID for fan clutch engagement, but finding a correlation with 100 other parameters is needle in the haystack stuff. Ambient temp would be the obvious one but there must be more going on in that engine brain.

 

[beerwig]

Was your code/issue resolved?

I am still stumped with this fan clutch "issue."

Went out and tested it again, per indications here, fan clutch appears to "fine" - it is behaving as inteded, turning it by hand with engine off.

The darn things hardly ever turns off, however -- unless it is below 50F ambient temp (from what little I can remember). Is there perhaps a sensor of some sort that activates the clutch or this via the PCM?

I have no codes but this is annoying especially during cooler months, no A/C running, 70s outside, just cruising with windows down, but sounds like an 18-wheeler is approaching nearby.

The code according to ford was a glitch and it has not showed up again as I now have 34K miles on the truck. My fan clutch definitely did not sound normal. Sometimes I was unsure at higher speeds but at 40 or less it was pretty evident. I would take it in and have them look at it if you are still covered with your warranty.

 

[AZsurveyor]

The code according to ford was a glitch and it has not showed up again as I now have 34K miles on the truck. My fan clutch definitely did not sound normal. Sometimes I was unsure at higher speeds but at 40 or less it was pretty evident. I would take it in and have them look at it if you are still covered with your warranty.

No warranty.

I am at 95K

 

[beerwig]

It was known issue for some of the 23-24 Tremors or 6.7HO. I would think the dealer can at least confirm the issue and then you can resolve it per your choice. I don’t know if it can cause other issues other than maybe less mpg due to the friction it may be causing when it is loud. When I took mine in they knew immediately and scheduled me right away.

 

[AZsurveyor]

It was known issue for some of the 23-24 Tremors or 6.7HO. I would think the dealer can at least confirm the issue and then you can resolve it per your choice. I don’t know if it can cause other issues other than maybe less mpg due to the friction it may be causing when it is loud. When I took mine in they knew immediately and scheduled me right away.

I will consider it.

I appreciate the suggestion.

 

[beerwig]

Good luck!