P0128, Replaced Thermostat (203 degree) 3 times in the last month, cleared code, temp. stays between 150 and 160 degrees, then after running for 2 hours with A/C off temp rises to 212,within 2 minutes, then immediately drops back down to 160, after about 5 days of normal driving the code P0128 reappears, if A/C is on temp stays between 150-160. Any ideas? any help would be greatly appreciated
Wed, 02 Jun 2021 19:22:36 +0000---------------------------------------------------------------------------
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