Hello I have a heat issue on s 2011 with 3.8l. Last year I flushed heater core and got heat again. But now it just blows completely cold. Things I've noticed is the hvac controls sometimes flash on defroster button and takes awhile to kick on, secondly the temp gauge shows normal temp before any of the hoses get hot. So far I have flushed whole system again and it was not very dirty. I replaced thermostat, changed coolant. Theblend door works properly and air comes out decently strong. Both heater core hoses get hot. Im starting to wonder if that temp sensor is bad, but will that cause heat not to work? I know some vehicles have heater control valves but idk if wranglers do. I need to figure this out, its been in the teens this week
