Hyundai Forums banner

2017 Elantra Enging Rattle When Accelerating

36K views 56 replies 23 participants last post by  OkieRich 
#1 ·
Sorry if this has been discussed, but I have been experiencing a very faint/quiet rattle sound that seems to be coming from the engine when I accelerate. I have the GL model, available in Canada, with a 2.0. I have made an appointment with the dealer for next week, but I just want to see if anyone has any opinions. I've only had the car for 3 weeks, arg....

Thanks for your help!
 
#2 · (Edited)
@camp0619: 00000732 Welcome to the forums. I really can't answer that, but I do not recall reading about this issue on the 2017. I try to read all the AD platform posts. I may have missed one or two.

You're doing the right thing by scheduling a visit with your dealer. Please report back what they say it was and how the corrected it. That information may help some of us down the line should it happen again.

Who knows? Mine may be doing it...Id have to turn down the volume of the tunes to know. And that's not likely to happen. ;)

Did you check underneath to see if a family of loons were nesting inside the fender well? :grin2:
 
#3 ·
Thanks for the warm welcome Rich! Our national animal is actually the almighty beaver - but I can assure you neither beaver nor loons are stuck under the car haha!

Do me a favor, and next time you are in the car, turn down the tunes and see if you can hear the same faint rattle when accelerating. Maybe I'm just hearing things...

I did not notice at first for the same reasons - my tunes are usually on loud!
 
#4 ·
I've noticed this as well on my US Model (2017 LTD Ultimate). It's faint, like sombody shaking a small chain under some pillows, but it's there. It only happens for me when the engine is under load and accelerating. I was going to have them check it out when I got my first oil change. I'd be interested to hear what they tell you.
 
#6 ·
Sure notice this in daughter's Soul burning cut rate 87 E10 gas, but not in my Elantra burning top tier 91 gas ethanol free. And lot more than a quiet vibration, sounds like her engine is having a hernia.

Then she stops at gas station noted for water in their fuel. Why, but dad, its the closest one to home. Well can't you drive a couple of more blocks?

Kids, they drive me nuts.

Buying gas today is like buying a lottery ticket, are you feeling lucky? Like that makes any difference or not.

Another private brand gas station sell 91 octane ethanol free gas with even a 4 cent per gallon coupon. Sometimes its good, other times, not so good.

Ha, remember a long time ago driving my Riviera out east taking Highway 17 in Canada for a different view. Couldn't even buy high octane leaded fuel this car needed just to survive, that was a mistake.
 
#13 ·
Six screws and about ten push pin rivets hold that engine under cover on, could be a push pin rivet or a screw is missing causing that vibration, or even on the wheel wells.

Good old Chevy dealer left some of those out on my Cruze causing that kind of noise, went back and asked, where are my push pin rivets, couldn't find them so had to order them.
 
#16 ·
UPDATE

Ok, so I took my Elantra GL (Canada) into my local Hyundai dealer this morning to get the engine rattle checked out. As another user posted in this thread, it could best be described as a muffled chain rattle coming from the engine when accelerating, if that makes any sense.

They had several people take it for a spin, each one of them heard the noise, including the garage foreman on shift. They put it up on the hoist and checked the suspension, etc. and also checked all fluid levels and everything came back fine. He told me that the noise I am hearing is common within 2017 Elantras and that it's nothing to worry about. But if it becomes any louder to certainly go back.
 
#17 ·
UPDATE

They had several people take it for a spin, each one of them heard the noise, including the garage foreman on shift. They put it up on the hoist and checked the suspension, etc. and also checked all fluid levels and everything came back fine. He told me that the noise I am hearing is common within 2017 Elantras and that it's nothing to worry about. But if it becomes any louder to certainly go back.

If it's common, then why didn't they know about it before the test drive.....:surprise:


Odds are it's truly nothing, but I always love when that's the only answer you get.
 
#19 ·
Hahaha! You guys are both right..I'm not entirely buying it. If it was so common then why did they have 3 guys take it out for a test drive to hear it, and then why did they throw it on the hoist?

And odds are its nothing, as you stated. But when you buy a brand new $25,000 vehicle in 2017, you don't expect these things.

Ah well.
 
#21 ·
All right, that's it...not reading another post on this thread until I start a new pot of coffee. Ridiculous, the amount of people that can think clearly this early in the day. I salute you bright-eyed geniuses.

:beer:
 
  • Like
Reactions: 856249
#23 ·
With the Cruze, was a plastic heater hose hitting a brake line causing the vibration on acceleration, fixed solid to the firewall, other to the engine that tips back during acceleration. Cure, bend that brake hose up a little bit.

78 Fleetwood almost drove me nuts, sounded like a bad rod knock during acceleration and really loud. Blocked up all four wheels told my son to put slight pressure on the service brakes and hit the gas. Was the flywheel cover banging away like crazy. Was held on by four 1/4"-20 bolts where all four were only about a 1/4 turn loose. When I tightened those, noise went completely away. But to prevent it, opened the holes to 5/16"-18 bolts with internal tooth lock washers and added two more.

How about a couple of loose bolts on a rotor shield, or a rubber grommet missing on one of the corners of that appearance cover. Older vehicles have motor mount problems with oil dripping all over them. Not easy with a V-6 or 8, but on a little tiny four, and put both hands on the block and shake it back and forth, loose bolt in one of the motor mounts?

Also engine hesitation, spark plugs not torqued properly, electrode gaps all over the place. Found this on my brand new Elantra next morning, while some specs say 45 mils that's crazy, smallest was around 30 mils, gaped all four at 26 mils, what a difference. Kids Kia was even worse with some at 50 mils, did the same thing for hers. But still not enough improvement, where are you buying your gas?

At a cut rate gas station using E10, noted for bad mixes and water in the gas. Told her to fill it up with 91 octane ethanol free, now she is noting a huge difference in both vibration and performance. Since she is a nature lover, said tantamount to you trying to start a camp fire using green wood in the rain. They don't understand that while the engine my creep along with 87 or even worse with a poor mix, the combustion cycle is greatly reduced and the engine is struggling to make the thing go. All they do is to look at the pump price.

Is this a plastic or a metallic noise, for us guys that been around the block a couple of times, no such thing as a plastic noise, was all metal. Does give a hint where to look, won't find any loose screws, all this plastic snaps together, air cleaner has two spring clips, are both of those closed? Part of it is attached to the chassis other part to the engine that can move, if a guy wouldn't tighten that thumb nut on an older fashion all metal air cleaner, would really get a heck of a noise.
 
#25 ·
Hearing the same noise..

Purchased a 2017 Hyundai Elantra SE about three weeks ago and started to notice a similar noise. It sounds almost like a faint metallic rattle when I am accelerating, it seems to be most noticeable anywhere from 1800-2500 rpms. Any update on what may be causing this noise?

I have been driving the car in Eco "drive mode" since purchased, I am going to test it out in the other drive modes (normal, sport) to see if I hear the same noise. I plan to take it into the dealership to have it checked out in the next couple of weeks, but am very frustrated to be having an issue with the car so soon.
 
#27 ·
I bought mine 3 weeks ago and within the first day, I had an SRS Airbag light stay on continuously after starting the engine. After researching the manual and online; I came across a recall notice on Transport Canada's website posted in April 2016. I had the new car for one day and had to schedule an appointment to get it tested and then replace the SRS system. When I asked why this was not taken care of prior to purchasing this car (as I waited for one week for delivery as they prepped and cleaned the car) they responded by stating they were not aware of any recalls and therefore never checked for any issues, which they should've with a simple scan to ensure everything is working for a new customer. They showed me their Hyundai Canada intranet site and said no recall information, especially when they entered my car's VIN#. Thankfully I came prepared and brought the recall notice with me and provided them with the site. All in all, they fixed the problem (light is not on anymore) but made me wonder what other issues I will have with this car - not confident in my purchase as I was before.

So I understand how frustrating it is to have a new car and have issues arise already. I will listen for the engine sound as like many others who have already mentioned, my music plays loud while I am driving so I have not noticed any irregularities. However, when I reviewed many Elantra 2017 expert and non-expert reviews, there seems to be a consensus on loud engine noise when accelerating, similar to the noise many users here are describing. Hopefully, it is not a serious engine issue as this is my first Hyundai and I do not want this to be my last as I am pleased with the car overall up to now.

 
#31 ·
in the old days, light pinging under load would mean the engine is in optimum state of tune. i dunno how much timing the ecu is allowing, but it is possible that even with higher octane fuel, there would still be light pinging, because the ecu would see that more timing advance is possible. unless it has already reached maximum advance. and then i am sure knock sensor(s) are pulling timing when they/it hears pinging. some engines have really sophisticated knock control, bmw for example, each spark plug has a sensor, and the ecu(dme) can pull timing for each cylinder individually. it can also add/pull more fuel per cylinder.
 
#33 ·
Two words in the dictionary, heterogeneous or homogeneous, former is a mixture of two or more substances that do not combine to form a new compound, latter does. Guys found that to replace R-12 could mix propane and butane together to emulate the so called P-T curve to emulate R-12, but this was stupid, was a mixture, and if either one or the other of these two non-combining gases leaked out , the system pressures became so high your MVAC would blow its cork and destroy itself and even cause an explosion. R-12 is a homogeneous substance, remains it characteristics, and if it leaked out, pressures would drop and the system would turn itself off.

Really can't avoid politics on this issue, all started by the Clinton administration creating new problems that were never problems before, R-12 was and still is a biodegradable refrigerant and has a linear temperature to pressure curve, R-134a is not a biodegradable refrigerant, now being contributed to global warming and its pressure skyrockets with temperature, entire MVAC system had to be redesigned and far more expensive for the consumer.

What else that forms a heterogeneous substance is mixing ethanol with gasoline, whoever said alcohol and gas does not mix sure didn't know they were talking about our fuel, other new word is hygroscopic with ethanol eating away at the interior of our fuel systems. Ethanol is also heavier than gasoline and will settle to the bottom of your tank, and since the fuel pump picks up from the bottom of the tank, this is the first to go. How stupid can the the government get making this a law?

What is left is low octane fuel that sure doesn't par very well in a 2.0L engine with a 12:1 compression ratio.

So are you hearing rattle or ping or more appropriately detonation? Rattles occur when you are driving on pothole road, detonation occurs when you hit the gas. Than what guarantees to have when you are only getting the low octane gas at the pump, ethanol settles there as well and also pulled from the bottom of the tank, water also is heavier than gas. So what we have today is problems that were never problems before, you won't catch me putting that crap in my vehicles. And sure the Elantra will run on 87 octane if indeed it is 87 octane!

An since our government elected to use our food to power way oversized SUV's and pickups perhaps you noticed the cost of what we need to survive has skyrocketed at the grocery store. Idiots that buy these things are also creating a huge demand for more fuel. Fuel is never based on the actual cost of production, but is on a supply and demand basis. And how does out EPA solve emission problems? Exports them, but some are wising up, not a local problem, but a global problem. Sue had a bunch of idiots running this country for the last 50 years.
 
#34 ·
Ethanol in gas is one of the biggest scams in this country perpetrated by corn subsidies and the nihilists running the EPA. You actually get worse engine performance using ethanol as a fuel additive and at higher levels (like the 15% that the gov't. is trying to mandate) can cause engine damage to almost all vehicles on the road today. Most auto manufacturers and and auto insurers like AAA do not recommend it, but hey, what do they know?
 
#36 ·
Another bad joke is banning that Keystone pipeline project, we have 1.8 mile long trains running through the center of our town loaded with tanker cars carrying this stuff thanks to Obama's boss, Warren Buffet. So far two derailments in our state, Watertown and just recently in Superior, WI, people had to vacate for the clean up, but so far no fires. Our turn or other towns can be next. this Railroad was built in the 1850's with tiny locomotives. Now being pulled by five giant locomotives weighing 450,l000 pounds each.

And putting two bucks per barrel in Warren"s pocket, Hillary is also in favor of this.

CO2 is another lie, varies between 200-750 ppm million, has a very low value of specific heat, and its molecule to even contain what little heat it can store is only resonate to a very narrow wavelength of the sun's rays. And yes you need the sun, up north here during the winter season, only about 9 hours of daylight, rays are only effective for about 3 hours, and this is with a clear sky that is rare due to the clouds.

Compare this with moisture generated by an earth covered with 75% of oceans wiht a humidity up 100% and a very high specific heat value, only complete idiots will believe our administration when they blame CO2 for this. Ha, whenever I walk in my yard and exhale CO2, my trees grab me. When CO2 levels are high, plant life benefits.

Methane is one of the major causes of climate change, A low carbon fuel and have a known 12,000 year supply of this stuff, so why aren't we using this? This is because we have either idiots or crooks running our country.
 
#37 ·
I want to pitch in on this topic a bit. I have no idea what actually causes the rattling noise that we hear. I hear it too. It's annoying. However, it might be nothing to worry about. Here's why (just my theory): this could be a side effect of an Atkinson cycle engine. This engine doesn't sound like any other engine that I've driven before. It's just something that we might have to leave with, and it might just be okay. Time will tell whether this is a design problem or just a side effect.

My MY05 Chevy Malibu Maxx had an old style 3.5L GM engine. There was nothing outstanding as far as engineering goes about that block of aluminum. While the engine was cold you could hear slapping noise. The car lived with it for over 200,000kms and I never had an engine problem. It kept making that noise when it was cold and it kept performing same way as on the day we bought it new.

My MY10 VW Golf Sportwagen TDi has a super annoying (at least to me) "feature" where at a specific RPM I feel something that I can describe as harmonic resonance that my guts find very unpleasant. This phenomenon changes a bit with ambient temperature but never went away. The car got over 180,000kms on it now, and I had a number of problems with the car but none that are related to the engine where source of the resonance likely originates.

My MY99 Subaru 2.5RS had a beautiful boxer engine sound. However, the **** thing developed leaky piston rings way too early in life.

So my experience so far kind of indicates that if a car makes a noise that it's not too pleasant, but many drivers report it than it's could be that it's something that is happenning "by design". I also know that Hyundai is giving me 100KKm powertrain warranty, so if that thing blows up early it won't be too much of my problem.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top