So I got a code for insufficient cooling temp, so I changed the thermostat and did a flush on her, cleared the code and it came back. So the last thing I could think of was the ECT Sensor. So I changed that. Now I think I have an air pocket in the engine side of my thermostat because it reads that it is over heating. Also only one of my fans turns on. The driver side fan.

 

Okay neither fan turn on at all until I turn the heat on, then once the heat is on, it cools back down

 

Anyone?