Load groaning while accelerating - 2017+ Chrysler Pacifica Minivan Forums
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post #1 of 19 (permalink) Old 11-08-2016, 03:08 PM Thread Starter
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Unhappy Load groaning while accelerating

Anyone have an issue where the sound of the engine gets pretty darn loud under moderate to heavy acceleration? I have a limited, and it does it on mine, but have now rented two base trim models and neither of them make the sound. It sounds like its coming from the area of the passenger side second row. Maybe an exhaust leak?

I am going to bring it in, but its brand new, and I am afraid it will not get fixed and other things broken.

Thanks

Jason
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post #2 of 19 (permalink) Old 11-08-2016, 04:16 PM
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loud groaning

Have never paid attention in my pacifica but when I first got my 2013 I did notice the motor as a loud growl when you stomped on it hard. I must be used to it cause I hove never paid attention now.At the time consumer reports said it was a different sound from the pentstar engine.If you think its not right please have the dealer check it out.I might add it was like a sporty growl. My gm cars never sounded like this but I guess it was fine as I never had any trouble with it and hope my pacifica is as good as that car was.
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post #3 of 19 (permalink) Old 11-08-2016, 04:38 PM
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Originally Posted by jaygrovr View Post
Anyone have an issue where the sound of the engine gets pretty darn loud under moderate to heavy acceleration? I have a limited, and it does it on mine, but have now rented two base trim models and neither of them make the sound. It sounds like its coming from the area of the passenger side second row. Maybe an exhaust leak?

I am going to bring it in, but its brand new, and I am afraid it will not get fixed and other things broken.

Thanks

Jason
Hi Jason,
I am not aware of this concern, but we want to ensure your vehicle is safe and performing optimally. Please feel free to keep me updated after your visit to the dealership, I am happy to reach out on your behalf if needed.

Anna
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post #4 of 19 (permalink) Old 11-08-2016, 04:39 PM
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Would it be possible to use your smartphone to record some audio, drop the file in a drop box and post the link so I can listen to the "groaning" you're referring to? Maybe others on the forum can better relate if they were able to understand what you're defining as "groaning" so that we can provide better responses. That way you can arm yourself with some level of knowledge and information before you take it to the dealer. If that's not possible, then I'd say visit your local service department immediately and/or a trusted local mechanic.

Please report back what they find too (if anything at all).

Thanks!
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post #5 of 19 (permalink) Old 11-08-2016, 07:21 PM
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I haven't noticed any noise like you describe. But I agree with Kryptik that it would be easier to diagnose if you can get a recording of the sound.

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post #6 of 19 (permalink) Old 11-20-2016, 10:24 PM Thread Starter
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i guess i can try to record it with my phone, but it may be difficult to hear. I would love to video the tach while recording audio, but every phone will have different sensitivity. Just out of curiousity, does anyone know if the exhaust line runs behind the front passenger seat on the passenger side of the vehicle out the back? Is it worth me starting the engine and listening from under the car, maybe someone pressing on the gas while i am listening?

Any ideas?

Thanks

jason
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post #7 of 19 (permalink) Old 12-03-2016, 12:57 PM Thread Starter
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Just letting everyone know about some progress on my pacifica. After showing our service center, by actually driving the vehicle with the service manager, and comparing that to another vehicle (same type - limited), everyone agreed there was something wrong. So far, what they found out is that an air duct was missing. They have ordered the part and we will see if it fixes the problem. Here is the part number if someone else thinks they have this problem. 6818865AB "duct: fresh air". I would love to see an exploded diagram that shows where this part was supposed to go. I am also concerned that some dirt got into the engine if this is between the air filter and the engine. Since we havent installed the part I cannot be sure that this actually fixes the issue.
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post #8 of 19 (permalink) Old 03-03-2017, 08:20 AM
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Just letting everyone know about some progress on my pacifica. After showing our service center, by actually driving the vehicle with the service manager, and comparing that to another vehicle (same type - limited), everyone agreed there was something wrong. So far, what they found out is that an air duct was missing. They have ordered the part and we will see if it fixes the problem. Here is the part number if someone else thinks they have this problem. 6818865AB "duct: fresh air". I would love to see an exploded diagram that shows where this part was supposed to go. I am also concerned that some dirt got into the engine if this is between the air filter and the engine. Since we havent installed the part I cannot be sure that this actually fixes the issue.
How the **** did that happen?
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post #9 of 19 (permalink) Old 03-26-2017, 10:57 PM
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Quote:
Originally Posted by jaygrovr View Post
Just letting everyone know about some progress on my pacifica. After showing our service center, by actually driving the vehicle with the service manager, and comparing that to another vehicle (same type - limited), everyone agreed there was something wrong. So far, what they found out is that an air duct was missing. They have ordered the part and we will see if it fixes the problem. Here is the part number if someone else thinks they have this problem. 6818865AB "duct: fresh air". I would love to see an exploded diagram that shows where this part was supposed to go. I am also concerned that some dirt got into the engine if this is between the air filter and the engine. Since we havent installed the part I cannot be sure that this actually fixes the issue.

I've just noticed the exact same problem in my Limited. A loud groaning noise from below the floor when under moderate to heavy acceleration. My wife tonight said it sounds like a truck. It didn't do that the first weeks I had the van, and only started after the dealer had it to fix an unrelated problem with the seat. Did the fresh air duct fix the problem?
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post #10 of 19 (permalink) Old 03-27-2017, 03:11 AM
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Originally Posted by dolee7 View Post
Have never paid attention in my pacifica but when I first got my 2013 I did notice the motor as a loud growl when you stomped on it hard. I must be used to it cause I hove never paid attention now.At the time consumer reports said it was a different sound from the pentstar engine.If you think its not right please have the dealer check it out.I might add it was like a sporty growl. My gm cars never sounded like this but I guess it was fine as I never had any trouble with it and hope my pacifica is as good as that car was.
most of that growl comes from the intake. You would be hard pressed to hear the exhaust note from the drivers seat with all the windows rolled up. Some car companies even have resonators to make this intake sound louder under harder acceleration. Some use mics and amplify it via the cars speakers. No joke.

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