2003 Park Avenue w/o supercharger; engine coolant temperature only
goes to 183/185 degrees. Changed thermostat, rated at 196 but didn't
change normal running temperature.
When idling for a while temperature goes to about 205, but then comes
down when driving.
Is there a thermostat bypass or could the coolant temperature sensor
have drifted out of calibration or could a harness connection be
I'm reading the temperature from the digital information readout and
it corolates with the analog temperature gauge.