So why was your wife driving and taking pictures??? Just kidding.
At over 220F, the engine should be warming up the air across the fan, and engage the fan into high speed. So I hope it was roaring loudly when this picture was taken by the passenger.
If the fan was not roaring at that time, then the clutch needs to be replaced. But I guess that you knew that already!
Also found out the temp gauge is "damped". It was just barely over the 95 mark (midpoint - 200f) as the temp climbed...even at 109 degrees C actual (228f) on the scangauge, and at 110 degrees (230f), it swung hard right, to about 3/4.
Good thing that the fan was going fast as possible.
It might help to clean the radiator or slow a bit in this condition.
I know that my older 85 class C was always running hot, and I installed a transmission temperature gauge. Once I saw it was running 235 on level ground at 95F outside, I installed a huge 11X 17" transmission cooler on the transmission output, before it went into the radiator cooler. This helped the transmission cool and run at 190F, the engine also benefitted from having less heat to get rid of, and ran a little cooler.
Still I had to install a desert cooler. When I filled the 1/2 gallon desert cooler tank, then used the windshield wiper delay controller to turn on and off the windshield washer pump, it would pump a few ounces of water onto the A/C condenser every 15 to 30 seconds, this would cool both the condenser and radiator behind it. And the fan clutch would engage less often, saving fuel.
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