Van shows running hot but actual engine temp is not
2010 town n country. 106,000 miles. Just had
tune up and coolant flush. When driving once
the van is warmed up, the temperature gauge
in the car shows as fluctuating between 60 to
75%. Normal prior to now was 50%. Mechanic
measured the engine temp and it was 35
degrees cooler than what the gauge shows.
Replaced the sensor but the van is still doing
it. Mechanic thinks the issue is the ECM itself.
Other than the fact of the fan running to cool
due to the false high reading, is there a danger
in doing nothing? So the van shows as
running at the 3/4 heat mark but it is actually
at a normal temp. Does this need to be fixed?
Do you agree ECM?