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Hi I have the engine Fan stuck on high after some trouble shooting I narrowed it down to the CHT, just replaced the CHT and restarted the engine and and the fan is still on high, I checked my A/C just using one of those cheap gauges from the do it yourself refill kit and it says the pressure is fine while the truck is running but says it’s over pressure with the truck shut off, while I was running the truck I noticed I have a water leaks right at the turbo on the passenger side, could that be the cause of the fan being on high? Looks like a coolant line of some sort attached a picture for reference, any help is greatly appreciated thank you Pressure with truck off
Last edited by j_a_bailey; Mar 1, 2020 at 05:16 PM.
Reason: Misspelled words/added picture
That's not overpressure with the engine OFF. In fact, it may be a bit low. It needs to be checked properly with a full gauge set by someone with proper training.
With engine running it reads in the blue, I have read the threads on the fan on high that’s how I got to the CHT, but since the fan is still on high I’m gunna go the other route and say there’s an issue with the A/C pressure, i did notice this water leak right at the turbo on passenger side leaking pretty good right on the line
The fan still needs to be diagnosed. But i have replaced that fitting before it was a pain but worth saving some money doing it yourself and the parts are pretty cheap. Here is where i bought mine. It says oil fitting but it is the coolant fitting on this vehicle.
