2012 JK engine running hot, no heat in the cabin - Jeep Wrangler Forum
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Old 12-03-2019, 11:43 AM
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2012 JK engine running hot, no heat in the cabin

Hello! This is my first post here so please forgive me if I don’t respond quickly as I’m trying to figure out how lol.
Last January I got a 2012 Wrangler sport, 84,000 miles on it. Perfect first few months, then in the spring around April the temp gage started climbing up to 3/4. Took it back to the dealership twice, they burped the system twice. The next time they changed the radiator. The next time they changed the water pump. The next time they changed some sensors and the thermostat. I’m pulling out of the dealership and it starts doing it again!! It is now December and there is no heat at all I’m the cabin and it’s damn cold in New England. Now they are saying I need a new engine (covered by the warrantee #blessed) but they never changed the heater core... Has this happened to anyone?? I’ve searched the internet and never heard of this ever happening. I drive the car like it’s my baby and it really doesn’t go off the paved roads at all, and if it does it’s extremely light. I’m just curious to hear if anyone has the same story. Thanks in advance!

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Old 12-05-2019, 12:57 AM   #2

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Old 12-06-2019, 09:56 AM   #3
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Super common on the JKs. Welcome to the club unfortunately
What actual temps are you heating up to?
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Old 12-07-2019, 10:31 AM
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I’m really not very technically inclined to figure this out and it doesn’t specify the temps on my gauge but the needle goes to 3/4 and slightly over. In anyone’s experience has a new engine fixed the problem? It just feels like this will never stop
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Old 12-07-2019, 10:49 AM   #5
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Could be air the cooling system. Burp the radiator. Park with the front on an uphill slope and open the cap. Let the motor run for a few minutes to get the air out of the system. Don't burn yourself when you open the cap.
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Old 01-04-2020, 02:40 PM   #6
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My 2012 had the no heat issue and the blend door actuator was dead...sorry, didn't have the other issues....

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