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That makes sense, I will try that over the weekend. Thanks

That sounds like a good explanation, I am also seeing the condenser fins being flat wherever the openings are in the bumper but don't think that has anything to do with this behaviour. Anyway, if it's as good as it gets without throwing more money at it with this mileage, I am okay with that:like:

Today with a bit warmer weather it did not overheat, coolant was about 92-94c but even on the lowest ac setting, it wasn't blowing as cold as it does when driving, so I am guessing my issue is mostly resolved but not completely, I do remember the fan kicking in very often before and ac being as...

Knock on wood, but after cleaning the debris from the lower part of the radiator between the condenser, after 1h and 15h of idle, ac was still blowing fairly cold, coolant temp was at 97c. Didn't hear the fan kick in though but it was around 15c outside today so I will be testing in the next few...

Just with diag tool is okay or multimeter at the swtich?

Yes temp sensors are normal- however just need to confirm the Ambient (Raw & Filter) mismatch normal, I think it is but would like a another truck compare to verify. I think it was due to the heat soak, on cold and before overheating (just a few mins of idle they show the same value)

Thank you guys for all the answers, I will get someone more mechanically inclined to check all the suggestions and clean up the radiator area(although like I mentioned, it worked one day and stopped working next morning, so I am thinking it didn't get full of debris just overnight to cause the...

here are values with engine off and cold

AC is working just fine when driving

I know you said to test on cold engine, I will do that later tonight when I get home but when it started overheaating today ect and cht were the same, not sure what voltage I should be seeing for some those values here though. And why ambient temp is 10c different then ambient SAE temp. Never...

I idle anywhere from 20mins to 4 hours almost daily due to the kind of job I have.

Yes the AC condenser was checked and radiator is clean. Picture shows the gauge after 40mins with ac on, outside temp at 24C. It will go higher but that's when I either keep the gas pressed if I need to keep idling when my tools are being powered or turn the engine off. Yes, I had 1st tune for...

That's great info. Yeah the fan gets loud when I start driving when the engine is cold, settles down after a few hundred meters. I am guessing good shop would have that kind of bi directional scan tool to test the fan? ''I idled my truck in the heat and have never heard the fan increase...

I don't think so as it worked with low and high speed on idle for me for over 2 years and 150kkm, and one day just stopped doing that

If I remember correctly it was P0217 for engine coolant overtemperature condition but I will to replicate this week to confirm

fan clutch wiring harness or connector both look good, no damage

good question, unfortunately it went away before I was able to take picture and it didn't stay in any logs

there was one for a moment for the high coolant temp, but it went away when the truck cooled down

Temp sensor was not replaced, only thermostat and fan clutch assembly. No leaks, and the dirt would not affect the cooling fan not ramping up without load would it? Because I I was idling and it was almost constantly high speed 1 day and next morning and never since it got on high speed. But if...

Hi, has anyone experienced the cooling fun only go high speed when under load? Mine recently stopped kicking in while idling so it starts overheating after 30min idle with ac on and 1h without ac (when it worked I was able to idle for hours(job requirements) with ac on and it was constantly...