Need help, 2012 JKU stalling, smells like fireworks
#1
JK Enthusiast
Thread Starter
Need help, 2012 JKU stalling, smells like fireworks
2012 JKU stalls periodically (usually when coming to a stop), is giving me a cutting out sensation when it doesn't completely stall. Does it at all speeds. Seemed very hot under the hood (temp gauge read normal) when I opened it. Smells a little like after fireworks go off when sitting at idle. No codes but scanner shows these words: misfire, comp, catalyst, evap, O2 sensor, O2 heater, egr . I have not modified exhaust nor do I have chip. Did get gas yesterday. Thoughts? Any help appreciated.
Head was already replaced in 2013
Head was already replaced in 2013
#2
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Join Date: Nov 2011
Location: columbia,md
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You can ignore the egr- the pentastar a do not have one. How many miles? Plugs ever changed? How about idle air? I'm not sure this would give you the sulphur smell though.
#3
JK Enthusiast
Thread Starter
Appreciate the follow up. 50k miles, plugs have never been changed. Seems to be running good today. I suspect bad gas/water in the fuel. I am basing this off the fact that I just gassed up and some others complained of similar issues from that gas station. I am continuing to monitor and will post up again any changes.
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#8
I have the same problem with my 2012 but with no codes. Stalls at random stops when i restart the tranny won't ship into drive it takes a bit to catch up. Also the automatic shift from 3rd to 4th is hard like you put it in the wrong gear if it was a manual. There was a recent update to the pcm but it didnt help me might help you and it should be free.
#9
JK Enthusiast
Thread Starter
I have the same problem with my 2012 but with no codes. Stalls at random stops when i restart the tranny won't ship into drive it takes a bit to catch up. Also the automatic shift from 3rd to 4th is hard like you put it in the wrong gear if it was a manual. There was a recent update to the pcm but it didnt help me might help you and it should be free.