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Coolant temperature fluctuation ?

2552 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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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?
I just happened to look at my temp gauge (2017 platinum) yesterday and it was at 210*.

I’ll check it again today.
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Didn't you have a thermostat replacement recently? Do you recall the temp gauge reading before the change?
Yes. It was bottomed out at 160* and never came up higher until the thermostat was replaced.
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I’ll check it again today.
210* seems to be my normal warmed up engine temperature.
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