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  #1  
Old 09-09-2016, 12:26 PM
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Loud engine, 2017 3.6L

So it's been a while since our family has owned a jeep, are all the 3.6L jeep engines loud?
We traded in a 2013 Cadillac SRX Performance with a 3.6L and we couldn't tell if it was running from outside the vehicle. With the Jeep, if we remote start from inside my wife's work and come out you can here it from across a packed parking lot.

It runs great and were not having any issues, it's just a little louder than we would have imagined. I have a GMC Dually with the 6.6l turbo diesel and her jeep is louder.

Is this the norm? I've checked the fluid levels making sure the dealer didn't miss anything, everything is topped off. The rear exhaust of the vehicle isn't bad, just a loud engine.

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  #2  
Old 09-09-2016, 12:37 PM
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Re: Loud engine, 2017 3.6L

Definitely something wrong. Have a 2015 Summit with the 3.6L and it's almost too quite for my taste at idle speed (would like a little more exhaust rumble). Test drove a 2017 Summit and it too was VERY quite. Not sure what the problem is, but you should take it back to the dealer and find out.
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Old 09-09-2016, 01:04 PM
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Re: Loud engine, 2017 3.6L

I have a '17 GC Trailhawk, just like DRBSRT, it's a little quiet for my taste as well. Time to replace the intake and exhaust soon. I would bring it in to service to be sure.
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Old 09-09-2016, 02:11 PM
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Re: Loud engine, 2017 3.6L

It's not loud when driving, just sitting in park. The exhaust note is quieter than the engine, I just have never heard such a loud running engine from the outside.

And from the inside of the jeep you can't hear the engine running, but when you get out it's loud.

Guess it's just us or I would have found other threads commenting on this when I did a search.
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Old 09-09-2016, 02:28 PM
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Re: Loud engine, 2017 3.6L

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Originally Posted by hdrolling View Post
It's not loud when driving, just sitting in park. The exhaust note is quieter than the engine, I just have never heard such a loud running engine from the outside.

And from the inside of the jeep you can't hear the engine running, but when you get out it's loud.

Guess it's just us or I would have found other threads commenting on this when I did a search.


A cold engine is often louder then when it's warmed up. Is the noise as loud once the throttle closes down? Hard to imagine it being louder than a 6.6l d.
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Old 09-09-2016, 04:50 PM
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Re: Loud engine, 2017 3.6L

I don't notice anything out of the ordinary loudness wise outside. But I'll double check mine this evening.


If you are concerned I would go to a dealer and compare it to another on the lot just to be sure there isn't anything wrong.
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Old 09-09-2016, 10:46 PM
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Re: Loud engine, 2017 3.6L

Ok I did a test. Not scientific but way less subjective than my ear and memory.

I put a Professional SPL meter between my wifes 2011 VW CC 2.0L 4 Cylinder Turbo car and the 2017 Summit Jeep. This was sitting on a table saw (waste height) just about inline with the front bumper of each car.

Started each up.

I let both idle down. Blowers and Radio were off on both.
By the way, make sure it's not the blower on Max that you might be hearing as I'm sure it can be heard outside and I did not measure that.

The Jeep Summit measured 61dB
The VW CC measured 77dB

The VW was the only reference I had. But the Summit was VERY quiet from the outside the Jeep but inside the garage !!


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  #8  
Old 10-05-2016, 07:14 PM
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Re: Loud engine, 2017 3.6L

Quote:
Originally Posted by mswlogo View Post
Ok I did a test. Not scientific but way less subjective than my ear and memory.

I put a Professional SPL meter between my wifes 2011 VW CC 2.0L 4 Cylinder Turbo car and the 2017 Summit Jeep. This was sitting on a table saw (waste height) just about inline with the front bumper of each car.

Started each up.

I let both idle down. Blowers and Radio were off on both.
By the way, make sure it's not the blower on Max that you might be hearing as I'm sure it can be heard outside and I did not measure that.

The Jeep Summit measured 61dB
The VW CC measured 77dB

The VW was the only reference I had. But the Summit was VERY quiet from the outside the Jeep but inside the garage !!


Just a side note....I think your sound lever meter is due for calibration!
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Old 10-05-2016, 09:25 PM
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Re: Loud engine, 2017 3.6L

Quote:
Originally Posted by equallizer View Post
Just a side note....I think your sound lever meter is due for calibration!
I have calibration tuning forks for it. So I can check it myself.

Meter is still sold today.

GenRad/General Radio 1982 Precision Sound Level Meter -IET Labs, Inc
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Old 10-12-2016, 12:10 AM
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Re: Loud engine, 2017 3.6L

My 2012 GC had an extreme left header AND exhaust leak and was very noisy in close quarters. When I bought my 16 GC it was silent. I even had a guy come up to me one day at the grocery store while I was in reverse who said he couldn't tell if my lights were just stuck on or if I was actually running. Unless the fan is running it is quieter than most other new vehicles.
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