Elantra MD (2010-15) :: Strange Noise When Accelerating With A/C On


May 30, 2016

My 2012 Elantra has been nothing but problems. Unfortunately, with me being away from home in the USA, I haven't been able to bring it to my dealership. Lately, I've noticed that the acceleration of my E sounds different with the A/C on. It's more noticeable right when I hit the throttle that the engine engages, and power goes to the wheel. The sound is a deep more drone like sound, and is only there when my A/C is on.

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Elantra MD (2010-15) :: 2012 - Strange Vibrating Noise / Brakes Squeak When Stopped

I recently bought a new Elantra 2012, 2 months ago. While driving it during the first month, I heard a strange vibrating noise. I went to the dealer, since it's under warranty until 2019, and they told me that when Hyundai did their recall on their Engines, the head gasket was constructed wrong and they just had to order another head to fix it.

Fast-forward two weeks and I finally got my car back. At first, it's perfect! No noise or anything, but about a week later, yesterday, it starts to make the noise again.

For my second noise, I know it's the brakes. They squeak when I stop, even though the company I bought the car from is not allowed to sell brakes >50%, I'm assuming they did anyway. The problem I have with this is that yesterday, while on the highway, the breaks made the squealing noise regardless if I was braking or not. As long as the car was in motion, it made noise. Should I be concerned about this?

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Elantra MD (2010-15) :: Rubbing Noise While Accelerating Between 1st And 3rd Gear

My 2012 Elantra has 16k+ mi. on it and recently I've noticed a noise while accelerating. It typically occurs when first accelerating between 1st and 3rd. The sound itself is hard to describe as I am not a professional so it's hard to find the right words to give an accurate description. It sounds like something rubbing together or perhaps something loose. Any insight into possible causes for strange noises while accelerating on a car this young? It doesn't happen every time, typically when first beginning the drive and occasionally when beginning from a dead stop at a light.

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Elantra MD (2010-15) :: 2012 - Fast Ticking Noise While Accelerating

About a month and a half ago my Elantra while accelerating starting to make a fast ticking noise that was noticeable from usual with the radio and Air off but not terribly loud. The car still seemed to run the same.

So I took the car into the Dealer for my usual oil change and the recall for the automatic transmission and had them check it out. I was expecting nothing major. Turns out the service manager said a control armed failed as well as a piston and the damage was done. The will have to replace the entire top half of the engine at least and check the lower parts while taking it a part. They let me drive off and said to bring it back on Tuesday. Said he will drive to the rental car place and set me up in a rental while they fix it. Estimated to take 4-5 days while further checking into it.

It was noted as a "knock" in the upper part of the engine on the form I was handed after the car was checked out. They also said they would not bother doing an oil change on the car because of this issue. The car has a little over 27K miles on it.

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Elantra MD (2010-15) :: 2013 - Click Noise Mainly Happens When Accelerating From A Dead Stop

My wife and I are new Elantra owners, car is just about to hit 9000 miles on it. I don't know when the noise started happening, but wasn't too long ago. My wife is okay with it, but as for me I find it rather annoying that the car is so new and already making noises. I call it a click but she describes it as a thunk.

Here's the details. The car is an automatic for starters. The noise mainly happens when accelerating from a dead stop. I'll be at a red light and when it turns green, I let the brake go and gently step on the gas and click...there is the noise. Its just a single click, loud enough to annoy me and loud enough that I could hear it when the radio volume is set to 12 or so.

It has also happened mid driving when I release the gas pedal to slow down without using the brakes. Right when I release it, I hear the click...once again a single click.

Now I have taken it to the dealer as a concern because that click wasn't there when I bought the car. They told me it was normal and after waiting 2 hours for a simple oil change to be completed I wasn't ready to argue with them. But I am getting to that point that I'm ready to argue with them, considering the car is so new and still under the warranty.

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Golf/GTI VII :: Strange Noise When Accelerating?

I'm trying to figure out this noise I'm hearing whenever I accelerate. I can't tell if it's the turbo or something else. It doesn't have the smooth turbo spool sound like my mk4 GTI so I'm wondering if something is wrong or this is just how the car is....

It sounds like some kind of air induction but a little clangy at the same time. I'd try to record it but I don't think my iphone would pick it up.

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Elantra MD (2010-15) :: 2014 - Ticking Noise While Accelerating / Louder At Higher RPMs

I bought a new 2014 Elantra last Monday. Around 100 miles (Wednesday) I noticed it was making a ticking noise when accelerating. The sound gets louder at higher RPMs and goes away when I get off of the accelerator. You can't hear it over the radio but it's embarrassing when my passengers do. It almost sounds like a puff of air escaping or something, similar to a go-kart engine lol.

Anyways, I took it to the dealer Thursday and they drove it and said the noise was normal during the engines break-in period and if it persists after 15k to bring it back and they would see if there was something that needed tightening.

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Elantra MD (2010-15) :: Engine Vibration And Noise When Accelerating At Around 2500 - 3000 RPMs

I recently purchased a 2013 elantra.

I have noticed that there is engine vibration and noise felt in car and pedal when accelerating at around 2500-3000 rpm's before it shifts. Is this normal behavior? It just does not seem as smooth as it should be. I have only put about 600 miles on the car.

It has been very cold, but it does not go away after warming up.

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Elantra MD (2010-15) :: Faint Metallic Grinding / Friction / Rotating Noise When Accelerating

My car has developed some intermittent noise but I can't pinpoint the exact source, though it seems to be coming from the front. I hear it in 1st gear when accelerating, and it's more audible if I have my windows down. A faint metallic grinding/friction/rotating noise is how I think I could most accurately describe it. I do have an oil change coming up in the next few weeks and will mention it then.

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Ford F-150 (2009-2014) :: Strange Noise During Accelerating

This has happened about half a dozen times while accelerating. It sounds sort of like it's between a scratching noise and a rattling noise. It's only happened at highway speeds 50-60 mph while accelerating and will stop when I let off the gas. There have been a few times that i can get it to come back if i step on the throttle again, but will not duplicate every time.

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Elantra MD (2010-15) :: Strange Vibration Through The Brake Pedal When At A Complete Stop

I bought a new 2012 Elantra in March. Every so often I get a strange vibration through the brake pedal when I'm at a complete stop (red light/stop sign). It happens intermittently and I can't narrow down any exact cause. It happens when the engine is cold, fully warmed up, A/C on, A/C off, only been driving for a few minutes or driving for a few hours. No system lights come on. I've taken the car to the dealer twice and discussed this with them. They've not hooked it up for any diagnostics as yet. I don't think it's a vacuum line, engine or transmission issue because it is intermittent. I also don't think it's a defective engine/transmission mount. Could it possibly be the ABS module?

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Elantra MD (2010-15) :: HID Relay Base Is Vibrating And Making A Strange Sound

I recently installed a DDM Tuning HID kit. Since then it's always been making a strange sound when I turn the HIDs on (but the lights are working fine).

The relay base is physically vibrating and making a strange sound, see the video below:

DDM Tuning HID Kit Relay Rattling - YouTube

What is the problem and how can I fix it? I'm not sure if this is safe or not! I did the install correctly.

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Elantra MD (2010-15) :: Metal On Metal Noise When First Accelerating

I have a 2012 Elantra with 21000 miles on it. It runs well but in the last month or so it has started to make a strange noise when first accelerating. I would describe the noise as touching a fork to a metal fan...kind a "zzziiiinnnkkkk" sound, I guess. It only happens when the car has been sitting for a while and only on the first acceleration, usually in first, second, and third gear after which it immediately goes away and doesn't happen again until the next time we drive it. It seems like it would be related to the transmission except the sound is too tinny for it to be the gears. It sounds more like sheet metal making that sound. I took it to the dealer but they said they couldn't make it make the sound, which is crazy because it does it EVERY time we drive it.

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Elantra HD (2006-10) :: Strange Noise Coming From Rear In Between The Wheels

My son's Elantra is making a strange sound, which seems to be coming from somewhere in the rear, underneath the vehicle (in between the wheels). I can hear it with the car parked, idling. In gear or out of gear doesn't seem to matter. It's not very loud, but it's rhythmic. I checked the engine compartment, but I can't hear it at all up there. I *think* I can hear it while driving, but it's very hard to hear over the engine and road noise while driving.

The sound reminds me of a squeaky pulley, with a period of 1-2 seconds. The car has been serviced recently, and the mechanic said it was in great shape. Mileage is ~50K.

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Elantra MD (2010-15) :: 2014 - Bog / Hesitation When Accelerating

With Eco off my sport has a nice bog/hesitation when accelerating. Doesn't matter if ac is on or not. I'm also using shell from the same station I've always used for years. The 2.0 is still pretty new. My cruze turbo had the same kind of issue and turned out to be the spark plug gap was too small from the factory.

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Prius (2010-12) :: Strange Noise Happen At Startup

Yesterday morning, my 2010 had a very strange noise happen at startup. I'll preface this by saying that it was very early in the morning and I wasn't quite 100% awake, so the exact chain of events are a little foggy to me.

It was about 65 degrees when I went to start the vehicle in the morning. I noticed it was pretty humid out and the first humid morning of the year (I live in central PA). When I hit the power button, a very loud noise came from the engine area. It sounded like metal grinding and the motor having difficulty idling. I depressed the brake to attempt to put the vehicle in drive and the yellow "!" indicator light came on with a message on the on board display (i cant remember what it said). I shut the vehicle down and after a few seconds hit the button again..... same thing. This time, the idling and "grinding-like" noise went away and then the car seemed 100% normal. I noticed there was a little bit of blue smoke coming out of the exhaust while it was idling/grinding roughly.

Perhaps not the smartest thing to do, but I left for work and the vehicle has worked 100% fine since the mishap yesterday morning. In total, I have driven about 150 miles since the issue with no problems.

I read a sticky post concerning a service bulletin for engine knocking at start-up but what i heard seemed to be more than knocking and it was well above 40 degrees.

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Prius (2010-12) :: Strange Noise While Braking And After Turned Off

I have a 2010 Prius which I have had for a couple years. I get this strange noise from time to time that happens while braking. It starts, it will do it for a while, and then go away. When it's doing it, It will also happen after I turn my car off when the engine does it's shutdown phase. Occasionally, when my car is not moving and the engine is off, if I push my brakes it will do it too.

The noise comes from the driver side, by the firewall. the noise is a loud rachety sound, and it does not sound healthy or normal. I took my car to the Toyota dealership 3 different times explaining what was going on, but since it is random in when it happens, they have always told me everything looks normal. (of course I am out of my 1 year warranty too I got when I purchased it used.)

Is this noise something I should be worried about? What it is? Last thing I want to do is burn out some component of my car when I can save it now.

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Prius (2010-12) :: Strange Noise From CD / Navigation System

I have the IV, with navigation. My most recent sound is from the cd player. If you open up the navigation (like your going to load a cd) it's even louder. It sounds like like a computer hard drive searching and writing data, and goes on for about 10 minutes (or longer, my patience doesn't last too long). Maybe the navigation system is uploading a database or something. No CD's vs. loading a cd do not make a difference, and the audio system is off. Weird. Only way to hear it is on a quiet night, in EV mode. Reminds me of when I used to reformat a hard drive on my old computer. I'll continue to listen for it when I pull up to a stoplight.

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Elantra MD (2010-15) :: Check Engine Light Comes On When Accelerating

I have a 2015 Hyundai Elantra Limited. Lately, the check Engine light comes on when I accelerate from a full stop and stays on for 3-5 seconds. It has also happened when I accelerate to get on the interstate (that just started today). There is no issue with the car accelerating. Everything else seems to be fine. It's just the Check Engine light that is freaking me out a bit. I've had the car since June so I'm not ready for any major issues. It started two days ago. I took the gas cap off and put it back on last night to see if that was the cause but it's still happening today.

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Elantra MD (2010-15) :: 2011 GLS - Rattle Coming From Under The Car When Accelerating

Currently have 85k miles. About 20k miles ago I noticed when I have the driver window down I would hear a rattle coming from under the car when accelerating. Doesn't happen every time but does quite often. Usually goes away almost immediately. I'm not having any other issues and with my warranty out I'm not anxious for a drip to the dealer.

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Elantra MD (2010-15) :: TCS Light Will Flash And Car Stops Accelerating

While driving, the TCS light will flash and the car stops accelerating. Dry pavement, no bumps. I have to pull over to the side of the road, and shut the car off and restart, or wait a few minutes for it to stop having a fit.

I really don't feel save driving this car due to this issue. Is there a specific sensor that can be changed out or is this tied into the ABS and possibly individual wheel sensors.

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