Fan running WAY too high

[jmar311]

So I have a 2018 SCREW and just this week I noticed the fan is running way too high and is so loud its very noticeable. This has never happened before. It was just serviced with all fluids topped off.

Yes I do live in Tampa but past summers it never did this. Is this a 'known' issue? And if so can anyone advise what I can do to resolve it besides 'take it to the stealership'? Any help is appreciated.

 

[ColoradoBoss]

Disconnect the battery for a few minutes?

 

[jmar311]

Thanks ColoradoBoss. I thought about that to clear codes and possibly resolve the issue. How long should I keep it disconnected before reconnect?

 

[ColoradoBoss]

Not long, you could probably disconnect it, step on the brakes and then reconnect it and it should go away. That's what I've done before.

 

[FordTechOne]

There is a reason the PCM is commanding on the high speed fan. It could be high engine temp, transmission temp, high A/C pressures, biased sensor input, etc. You would need to see if there are DTCs set and diagnose from there.

 

[ColoradoBoss]

My fans would come on high when ever I flashed a tune from BCB and I’d have to disconnect the battery to make the fans stop. The BCB tune also made my engine run hot so I quit using them.

 

[Bill Giles]

Good advice

 

[IHAVETWO]

Mine runns much more since they reflashed my ecm for cam faser replacement.is that normal?