2.4 engine low freq vibration noise idling in gear - does yours do it too? - Hyundai Forums : Hyundai Forum
 
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post #1 of 7 (permalink) Old 04-11-2019, 12:52 PM Thread Starter
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2.4 engine low freq vibration noise idling in gear - does yours do it too?

First post here! Love our new 19 Santa Fe 2.4 Ultimate. Have about 2500 miles on it so far since purchase in late Jan. I attempted to search for this issue and didn't find anything. My biggest complaint (and so far I have VERY few complaints at all!) is that when in gear and idling forward, like you do when slowing pulling into the garage or moving slowly in traffic, there is a noticeably loud natural frequency vibration noise audible from the exhaust. It is loud and very low frequency. I don't know how I didn't notice it during test drives. Have others noticed this? I would like to learn if they all do it or if something unique to my car. I suspect it is unique to the 2.4 but not sure. Once you fully stop the noise stops, or if you lightly press the accelerator it stops. Only occurs at idle in gear.... Thoughts?
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post #2 of 7 (permalink) Old 04-11-2019, 02:13 PM
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Originally Posted by bondtimbond View Post
First post here! Love our new 19 Santa Fe 2.4 Ultimate. Have about 2500 miles on it so far since purchase in late Jan. I attempted to search for this issue and didn't find anything. My biggest complaint (and so far I have VERY few complaints at all!) is that when in gear and idling forward, like you do when slowing pulling into the garage or moving slowly in traffic, there is a noticeably loud natural frequency vibration noise audible from the exhaust. It is loud and very low frequency. I don't know how I didn't notice it during test drives. Have others noticed this? I would like to learn if they all do it or if something unique to my car. I suspect it is unique to the 2.4 but not sure. Once you fully stop the noise stops, or if you lightly press the accelerator it stops. Only occurs at idle in gear.... Thoughts?
I have had a SF 2.4 AWD Limited since late October, only 3000 mi since stored during a mon away this winter. I have not noticed that problem nor any problems with rough shifting others have mentioned. My only problem is occasional gas smell after in garage a few hours (I noticed past few weeks by the front grill area, may be coming from some vent like a bad PCV? so having the dealer take a peek soon but of course it's intermittent and no code). The only problem I have pulling into the garage is the ISG/ASS will shut off the car as I'm tapping to stop & manuver into the garage :-(
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post #3 of 7 (permalink) Old 04-11-2019, 04:14 PM
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Originally Posted by bondtimbond View Post
First post here! Love our new 19 Santa Fe 2.4 Ultimate. Have about 2500 miles on it so far since purchase in late Jan. I attempted to search for this issue and didn't find anything. My biggest complaint (and so far I have VERY few complaints at all!) is that when in gear and idling forward, like you do when slowing pulling into the garage or moving slowly in traffic, there is a noticeably loud natural frequency vibration noise audible from the exhaust. It is loud and very low frequency. I don't know how I didn't notice it during test drives. Have others noticed this? I would like to learn if they all do it or if something unique to my car. I suspect it is unique to the 2.4 but not sure. Once you fully stop the noise stops, or if you lightly press the accelerator it stops. Only occurs at idle in gear.... Thoughts?
I would start by taking a peek underneath around the exhaust. It could be some contact is occurring (heat shield, loose rubber hanger, etc.) when the engine is under that specific load at idle. May not be it but it doesn't hurt to rule it out first.

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post #4 of 7 (permalink) Old 04-11-2019, 07:22 PM
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SF 2.4 AWD Ultimate here. I have the same low frequency rumble in those conditions. It sounds to me like resonance in the exhaust system at ~1200 to 1400 rpm and I mostly notice it when I’m in stop and go traffic with no radio or music playing. I think it would be pretty noticeable pulling into the garage with the window open and the sound reflecting off the wall, but in normal driving it doesn’t bother me and i have no reason to think anything is wrong.
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post #5 of 7 (permalink) Old 04-11-2019, 09:51 PM
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I get this exact thing. It’s so low it almost hurts my ears if that makes sense. It’s only when in idle. Once I hit the gas the low pitch noise goes away. Mine does it in park too though. In the winter when I’d let the car warm up I could hear it inside the house. Kind of sounds like an older car with a messed up muffler lol.

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post #6 of 7 (permalink) Old 04-11-2019, 11:36 PM
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2.4 engine low freq vibration noise idling in gear - does yours do it too?

Iíve had my 2.4L Ultimate for about 6 months and have 7,000 miles. Iíve noticed that the exhaust note is lower sounding than my Elantra, and maybe slightly louder when youíre outside of the car, but I think it sounds better. Iíve never thought it was loud or unusual sounding, and I also havenít noticed anything while inside the car.


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post #7 of 7 (permalink) Old 04-15-2019, 04:44 PM Thread Starter
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Thanks for the replies. Sounds like others have noticed the same thing as I have. I think ZerosweeT hit the name on the head in his description, it does almost hurt ones ears. It's like a loud low frequency rumble from large woofer speakers in your kids car. Since some have it and other don't I suspect it's a function of exact engine speed which might vary from one car to the next. In our car, it's loud enough that when my wife slows down to approach our driveway at the street the sound starts resonating, and I can hear it inside in the back of house to announce her arrival. If I could tweak the engine control speed slightly I bet I could make it stop. When the car is totally stopped the engine idle drops to its lowest speed and the noise stops also. It's in that intermediate low idle when the car is still slightly rolling with foot on brake that it is so loud and constantly resonating. I plan to bring it up with a dealer whenever I have to take it in for it's first visit.


If anyone else figures out more on this please let me know. Ironically for me, the car this Santa Fe replaced for us was a VW diesel, and we could hear it announce it's arrival also due to diesel clatter. We can hear this Santa Fe just as easily!
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