car is sputtering and running hot
...I'd first put a brand new thermostat in...top off the coolant level on the reservoir tank to "full cold"---and see if she's still overheating...your ECU needs good information such as ambient air temperature, coolant temperature and air flow and O2 to see how's it doin'~ see we really cannot move on these parts replacements until someone undoes the "diagnostic" plug and hook a scanner to it...please report~
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