Overheating
8 Answers
P1536 CADILLAC - Engine Coolant Overtemperature Air Conditioning Disabled...Possible causes: Faulty Engine Coolant Temperature Sensor, Engine Coolant Temperature Sensor harness is open or shorted, Engine Coolant Temperature Sensor circuit poor electrical connection...Description, The A/C compressor requested by HVAC controller, the Powertrain Control Module (PCM) detects the Engine Coolant Temperature (ECT) input was over 257°F, or with A/C compressor operation requested or not requested by the HVAC controller, the ECT input was over 248°F.
Okay, I just replaced the thermostat and flush and filled it. It overheated while driving it. Does the coolant system need to be burped?
I know it's self purging. While putting the coolant in, it took a long time to fill.
I would purge the cooling system, always needs to be done when work has ben done. Here is a video on how to purge the cooling system... https://www.youtube.com/watch?v=xeTgmdRkQtY
The only thing with that video is put the radiator cap back on before you shut the engine off.
Sorry, had to take the dog for a walk, but yes, having the front end up on an incline or raised up certainly helps.
Okay did the purge line and raised car up. Still overheats.