2019 3.6 engine noise? - Dodge Challenger Forum: Challenger & SRT8 Forums
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post #1 of 48 (permalink) Old 04-04-2019, 06:18 PM Thread Starter
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2019 3.6 engine noise?

Since new and now with 3,000 miles my 2019 3.6 Challenger has been making a strange noise that in my opinion sounds like noisy lifters or maybe an exhaust leak? Car is completely quiet at idle. Only time I can hear the noise is when driving slowly and slightly pressing the gas putting a light load on the engine. Noise is worse when cold but never completely goes away. My 2015 SXT never had this issue . I haven't yet been at the dealer but suspect they will tell me that it is normal. I switched to synthetic but that didn't help. Has anyone else had this issue? Thanks


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post #2 of 48 (permalink) Old 04-04-2019, 06:50 PM
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have you been able to pin point where the noise is coming from?
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post #3 of 48 (permalink) Old 04-04-2019, 06:51 PM
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I recently thought I heard the same type of thing in my 2018 GT - when somewhat cold and under moderate throttle at low speed (25-45mph). To me, it sounded like a slight exhaust leak, but I thought it was probably just normal when cold. Really haven't tried to hear if it was there all of the time or what. I'll try to pay more attention...
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post #4 of 48 (permalink) Old 04-04-2019, 07:16 PM Thread Starter
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Mine is a GT also. Coincidence?
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post #5 of 48 (permalink) Old 04-04-2019, 07:19 PM
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Maybe.... I'm at about 5k miles on mine. When I heard mine, it was from underneath the car (not from the engine bay), which is why I say that it is most likely exhaust-related. May just be the way they sound when cold... It's warming up here (PA), but I'll make a point to listen for it more closely.
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post #6 of 48 (permalink) Old 04-05-2019, 07:10 AM
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I listened for it again this morning and if I mute the radio and listen for it under moderate throttle, I can here it when cold, but not after the car warms up. To me, it sounds like an exhaust "tick", but it's hard to say. Personally, I'm not going to worry about it. I'll see how it behaves over the summer and after my first oil change (but I suspect it won't change since i think it's exhaust related).

Does it makes sense that an exhaust "noise" would only be audible when the car is cold?
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post #7 of 48 (permalink) Old 04-05-2019, 07:23 AM
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Originally Posted by jtrosky View Post
Does it makes sense that an exhaust "noise" would only be audible when the car is cold?
Sure, as the metal gets hot it starts to expand.

The 3.6 has an exhaust manifold that is integrated with the head but there is still a gasket which is where I would start. Maybe try some soapy water to see if you can see where it is leaking on start-up when the system is cold.
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2015 Challenger RT+ (non-STP)
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post #8 of 48 (permalink) Old 04-05-2019, 07:47 AM
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I'm just going to add it to the list of minor "issues" for the dealer to look at. Honestly, I'm really not concerned about it - just reporting what I've experienced. If it's a real issue, I'm sure it'll get worse long before my warranty is up (have 7 year/100k mile powertrain warranty since it's a "certified pre-owned" car). It might even just "go away" on it's own after some miles - maybe the carbon will "plug" the leak over time. :-)
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post #9 of 48 (permalink) Old 04-06-2019, 08:37 PM Thread Starter
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On the 2018 up Wrangler forum there are numerous complaints of a similar noise with the 3.6. So far no real solution but the general consensus is a misfire problem?https://www.jlwranglerforums.com/for...eration.10007/

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post #10 of 48 (permalink) Old 04-06-2019, 08:55 PM
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Could be just aerated lifters, this can happen on new 3.6Ls just from sitting on dealer lots for a while. It takes a bit to to prime them with oil again.

Diagnosis steps states: Run the engine between 2000 and 3000 RPM for three to five minutes. Return the engine to standard idle speed for 30 to 60 seconds. Evaluate noise. If noise is present, repeat the process an additional 4 cycles. If noise is present after additional cycles, take the vehicle on a typical drive cycle.

I say start with that. Also, don't bother looking at 2018+ Jeep forums for an answer. JL Wranglers have the 3.6L Pentastar upgrade, which is a very different engine from the classic 3.6 in the Challenger. They share just a few minor parts like some bolts, oil filter, maybe some gaskets. Any pattern failures or defects on one likely won't apply to the other.


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