Forum Discussion
BenK
Jul 19, 2021Explorer
Suggest posting on the Ford F150 forum
As for the dealer unable to find the issue, try another dealer or ASE Master Mechanic specializing in thermal management.
For your dash gauge to go into the red zone and go into limp mode, there has to be a code set. A simple code reader should find that code.
If no code set, then there will be too many things that might be taking the thermal system down. Personally dislike overly complex vehicles and their level of diagnostics (today).
Lastly, what was the last time you had the HOATs coolant flushed ? and...have you been opening the closed coolant system? That allows air & the main culprit is oxygen being allowed into the HOATs mix, which is very bad and will cause acid laden globules to form and stick to cooling areas (radiator tubes) to both plug and rot it out from the inside
As for the dealer unable to find the issue, try another dealer or ASE Master Mechanic specializing in thermal management.
For your dash gauge to go into the red zone and go into limp mode, there has to be a code set. A simple code reader should find that code.
If no code set, then there will be too many things that might be taking the thermal system down. Personally dislike overly complex vehicles and their level of diagnostics (today).
Lastly, what was the last time you had the HOATs coolant flushed ? and...have you been opening the closed coolant system? That allows air & the main culprit is oxygen being allowed into the HOATs mix, which is very bad and will cause acid laden globules to form and stick to cooling areas (radiator tubes) to both plug and rot it out from the inside
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