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Coolant temperature fluctuation ?

2625 Views 34 Replies 10 Participants Last post by  njacobsen
I have been driving with the Coolant Temperature digital readout displayed on the DIC of my 2020 3.6L XT5 for the past 6 months.

The thermostat is 194* and I expect the operating temperature should stay close to that. Mine, however, reaches 190-192 and then in a short amount of times, less than a mile, drops as low as 176 and then hovers around 180. It rarely climbs to the high 180's and then drops back down to 180 or less.

Curious what others are seeing?
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The good news is it sounds like the thermostat is sticking in the open position, allowing owners to still drive the vehicle. As opposed to a normal thermostat sticking closed and overheating the engine.
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