New Fan Clutch? 240* Old Priest Grade

[PCT]

I went to yosemite few weekends ago, and climbing old priest grade, which is supposedly one of the most steepest grades in the USA 20-30%. It was 103* out and i climbed it in 1st gear. I manually selected first gear so it wouldnt down shift and loose power. As i made the 10-15 minute climb, my coolant climbed to. At 240* (according to evic) The coolant gauge barley moved but it did move off center line. I was telling my brother this and he said sounds like you have a bad fan clutch, your coolant should never go above 210.

When i went to Vegas few months ago it was about 90-100* out and going up one of those 15 mile grades of 5-10% at the summit i was at 217-225* coolant temp. And going to my cabin any long extended grade my truck stays between 210-217.

Coolant level's are where they should be, what makes me think i need a fan clutch?

The video is to show how steep this grade really is.

https://www.youtube.com/watch?v=pWVOwukdxWY


**Edit**
Bed was fully loaded with camping gear, weighing around 1100-1300 lbs

 

[jasonw]

That is a tad high, but not necessarily high enough to mean that your fan clutch isn't working. It may have just been that little V8 struggling to get all that weight up the steep grade. Was your A/C on when you went up?

 

[Rustycowl69]

I wouldn't jump to the conclusion that the fan clutch is bad, just from driving up long, heavy grades during high ambient temperatures. Basically the clutch slips when the engine temp is cold, and slips a lot less when the engine is hot. So when the engine is fully warm, and you turn the engine off it should slow and stop fairly quickly. When the engine is cold it should spin, by hand, with little resistance. The fan should not wobble, or vibrate. when rotated by hand, it should be smooth, no grinding or rough feeling either.

 

[JonTownsley]

A bad fan clutch will either be stuck engaged or stuck disengaged (give or take). Usually you have more overheating issues idling because you don't have airflow across the rad via speed


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[PCT]

That is a tad high, but not necessarily high enough to mean that your fan clutch isn't working. It may have just been that little V8 struggling to get all that weight up the steep grade. Was your A/C on when you went up?

Yup AC was on the entire way on full blast [emoji16][emoji16][emoji16]

My brothers focus and my other brothers Tacoma made it up with out the gauge budging... Then again they weren't loaded either.


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[Rustycowl69]

Yup AC was on the entire way on full blast [emoji16][emoji16][emoji16]

My brothers focus and my other brothers Tacoma made it up with out the gauge budging... Then again they weren't loaded either.


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isn't that like comparing apples and oranges?

 

[PCT]

Yeah haha I guess so...


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[PCT]

Just when going up grades I never here an extra fan kick on...

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