2018 RAM 2500 6.7 Cummins coolant fan cycling on and off a lot

[NUGNUG]

The engine/coolant fan on my 2108 2500 6.7 (18k miles) seems to be cycling on and off when it is not really needed. For instance, it runs when I start the vehicle after sitting for days. While driving it'll cycling on and off at ambient air and coolant temperatures when I would not expect it to be coming on at all. Not sure what's going on. No codes are thrown. Started doing this a few months ago. I was under the impression it was only supposed to come on when coolant temp hits 217 degrees. Any insight will be appreciated. TIA

 

[AH64ID]

It’s also commanded on for the A/C and that cycling is frequent.

It’s normal for it to be spinning at startup.

 

[NUGNUG]

Thanks AH64ID

 

[Cummins12V98]

Only time I know mine is engaged is when I am towing.

 

[NUGNUG]

Cummins 12V98. I think your truck is 20 years older than mine base on your handle.

 

[brucejohnson]

Cummins 12V98. I think your truck is 20 years older than mine base on your handle.

From what was mentioned in the original post I thought yours (2108) was 93 years newer than his (2015 in his signature line).

 

[Cummins12V98]

Cummins 12V98. I think your truck is 20 years older than mine base on your handle.

Look at the bottom of my posts.

"2015 Dodge Brothers "AKA RAM" LongHorn 3500 Dually Crew Cab 4X4 CUMMINS/AISIN RearAir 385HP/865TQ 4:10's 33-35K combined "Towing Beast" B&W"