Have you considered checking the water pump seals?
Just re-reading over everything. I’m leaning towards this in specific. At any rate... I would say it’s pump related.Mechanical seal seeping on water pump . Common issue . Sometimes difficult to detect as only leaks when running and coolant burns off . As coolant level gets low in bottle air is drawn into system causing temp to rise and light to come on.
Just re-reading over everything. I’m leaning towards this in specific. At any rate... I would say it’s pump related.
I would try changing the sensor if you are not losing coolant. You could have had an air bubble come out when you first lost coolant.
This definitely does not sound like a sensor issue. Your sled is overheating and if you are not careful you are risking a meltdown (voice of experience). Sounds like you are losing coolent from the overflow. This happens when the engine overheats and the coolent expands because the engine is beyond normal operating temps.If I run with the light on long enough... I will lose coolant. If I stop as soon as it comes on no coolant loss.
If I run with the light on long enough... I will lose coolant. If I stop as soon as it comes on no coolant loss.
Good point, I guess an easy way to check pressure is to give the hose going to the head a squeeze after it warms up and see if there is any pressure. If no pressure builds up, cap is usually the culprit. Another thing I have seen is a distorted reservoir bottle neck, but if there's no pressure I would try changing the cap first.I read through this and it looks as if you covered everything. Only thought was did you change the coolant overflow cap? Ive had all mine fail and not hold pressure and would leak coolant out overflow. If i didnt pay attention it would run low on coolant and overheat. New caps are a bit pricey but did fix my problem with my 04, then when i had same symptoms on 02's i changed cap and problem solved.