Hjudge49

Yesterday, when driving my 2016, I noticed that the temperature Guage never came off the peg. The ambient air was pretty cool (55) here, and my oil temperature never got over about 170 or so. When I shut the car off to see if the gauge would reset, I found that the cooling fan was running continuously, and took about 10-15 minutes to finally shut off. The engine was not hot, I checked it with a laser temp gun, and the coolant wasn’t under undue pressure. Any thought on why this would happen? I have a service appointment scheduled for Friday to see what’s up.

Richard Ames

Sounds like a stuck thermostat not allowing the coolent to circulate. Happened to me and is not real uncommon.r

Hjudge49

The thing is that it starts running as soon as the engine is fired up, and then if I shut it off before it can heat up, it still runs for 10-15 minutes.

Avanti

Maybe a sensor issue. But, you might wish to disconnect the battery for a few minutes and try again. The worst is that you may need to reset the windows (as discussed in the manual); but be careful of the small ground wire some seem to break. All the best, in any event.

Harvey White

Most likely from your symptoms, the thermostat is stuck open, This causes the engine coolant to circulate through the radiator regardless of the engine temperature. You stated that it was a cool day, therefore with a stuck open thermostat the engine never fully warmed up. The computer gives the engine a specified amount of time to warm up and if it does not, it will revert to fail safe mode as it could be a bad water temperature sensor. In fail safe mode, the cooling fan runs at full speed when the engine is on and a a slower speed when the engine is switched off. It will run for some time after the engine is off. From your oil temperature, it is obvious that the engine was not overheating. Check the coolant level and if full, change the thermostat.

Hjudge49

That sounds like my symptoms. I’ll make sure the tech knows to check the thermostat. It makes sense that it is in fail safe mode, since the fan starts to run wide open as soon s the engine is started. Thanks for the replies.

Jmhornz71

I had the same problem. Had the theromastat and temp sensor replaced. Problem solved. If you are half way mechanical should only take a half hour or so to replace the thermostat. It sits top right, passenger side, on the engine with easy access I did not due my own work this time .

Vetteman Jack

Good luck - hope you find the source of the problem and it is a simple matter to fix.