Odour

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I’ve noticed a gas/exhaust odour from the heating system when not on recirculating mode.
Anyone else experienced this?

also, why does the recirculating mode turn off on its own? I notice each time because the odour starts up again

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Well it is probably working as it should, if you are setting still in your garage or driveway when this happens. If it happens when you are driving behind someone, again, working as it should. If you can roll down the window and smell the same odor, it's working fine. Often I can smell it when the engine is running and parked, because the wind is blowing the exhaust from the rear of the vehicle to the front where the inlet to the HVAC draws it into the vehicle. But if it's happening when there is no exhaust outside and you are driving forward, it needs to be checked out by someone with a meter.
Klein Tools Carbon Monoxide Meter-ET110 - The Home Depot
 
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OK, so I've been living with this for a couple of months. Its not normal. Smell is almost immediate when HVAC is on fresh air and I stop moving, everytime.
I'm thinking there must be an exhaust leak up front somewhere.
Will take it in for oil change and have them look at it
 

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why does the recirculating mode turn off on its own?
I believe auto makers have recirculate turn off automagically in certain conditions, primarily to prevent window fogging. I don't know that I've ever it turn off automagically in the JL, perhaps if you're in a more humid environment it happens more often.
 


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I believe auto makers have recirculate turn off automagically in certain conditions, primarily to prevent window fogging. I don't know that I've ever it turn off automagically in the JL, perhaps if you're in a more humid environment it happens more often.
It does turn off automatically after a certain amount of time and as soon as I come to a red light, I can smell that recirc is off, because the odour is immediate. As soon as I enable recirc the odour subsides and eventually is gone. Quite annoying. I've gotten so accustomed to turn off the auto stop/start and constantly turning on recirculate

Just book an oil change and to have the diagnosed for the 15th of February. Fingers crossed
 
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OK, so I misidentified the smell. Turns out there was a fuel leak! Luckily I didn't burn down my Wrangler. At dealer today getting repaired. I had noticed a decrease in fuel efficiency, but I had chocked it up to our January cold and my short trips everywhere.
Thankfully it is being taken care of
 

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This is very interesting. I had the exact same issue with my Fiat 124 Spider: the smell of fuel/fumes would come into the cabin as soon as the vehicle stopped moving; it’d go away the second the car got going.

My daily trips are also short: 1-3 miles one way.

The dealer has been unable to replicate/identify. Having said that, the smell has been gone for a couple months. Perhaps due to the cold weather.

Question: where did they find the leak?
 


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They didn't specify to me yet. I'll ask when I pick it up later today. But clearly somewhere near the air intake for the HVAC
 

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interesting. random question but did you have the Rona? in the last year and loose you smell? I had it last February and since having it and getting my smell back, oil burning and fuel smell completely different than it used to. Figured i'd ask because It is a known condition called Parosmia. Keep us posted though with what they found leaking on the fuel system. i would guess a failed connection on the High pressure inlet
 
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Rona free until now. But truthfully, as soon as the odour began I'd hit the recirc button so it never was in the air that long for me to deep dive into identifying the smell. I just assumed exhaust leak.

I've only owned my Wrangler since November and working from home, I've had limited seat time in it.
 

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