Maybe the system developed an air pocket when you were trying to refill the coolant after this happened, and the system just didn't get topped off adequately?Originally Posted by JHarris1385
Have you tried getting the system to operating temps high enough to open the thermostat, then taking the radiator cap off to see how high the fluid level is in the radiator as the coolant is flowing?
Since you most likely refilled it, the reservoir may be showing the right level, but if the coolant actually in the system hasn't been full enough since the off-roading incident to get high enough to overflow into the reservoir, it's possible the reservoir level has simply never changed since you topped it off even though the system is actually running low.
If you've ever visualized the actual height of the locations of both the thermostat and coolant temp sensor(s) in a cooling system compared to the height of the coolant flowing in a radiator when the system is full, you know that they are basically the same, and if the fluid level is low, gravity could be preventing the coolant in the system from getting high enough to cool the sensors reading the coolant temp, resulting in high readings.
If you're lucky that is. Sometimes it's the simplest stuff that get's overlooked, sometimes not.
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