Q: Stuck thermostat?

asked by on October 10, 2016

When driving the temp climbs between 210- 245. may bounce between the two temps. Doesn't drop when driving. Heater blows hot than cold. Heater has always blown hot.All these signs just started this morning. Is this a common sigh of a bad thermostat

My car has 218000 miles.
My car has an automatic transmission.

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