cooling fan ?

[robertc68]

I need to be schooled on how the cooling fan works.During this past summer on some of the hottest days I towed my 5th@ 13k,with the ac on.Once the enginge temp was around 206 range or more( IIRC),you could hear the fan roar and watch the ect temps drop rather quickly.Now in these cooler months it does not act the same but at times its like.the engine temp is much higher before it comes on.

I am used to the old style stuff with the sensor bulb reading temp and the fan coming.Do
our trucks work the same? Sorry for the long post,just trying to understand as I learn more about our great 6.0s.thanks,ROOBERT

[jetjock15]

About 50 different combined variables that make fan come on. Coolant temp alone trigger is 230, but it's usually on before that for other reasons. AC is the first thing that kicks it on. If its over about 95 outside and your sitting still, fan will come on to keep flow over condensor. When I did a tour in AK, my fan only came on two times in three years. When I did a tour in Vegas, my fan was always on.

[robertc68]

Ok thanks,definetly makes sense.

[Lilpooh]

Here is what the fan clutch looks like on the inside.

You Tube

You Tube

And here is the FSS and coil.

You Tube

You Tube

Sent from my iPhone using Autoguide

[robertc68]

Thankyou.More then I realized goes on to make them work.worker

[dee004]

Nice Rich,
Good little video demonstrations.
Cheers