Hyundai elantra shaking at idle

Fuel Injector. Fuel injectors that are dirty, clogged, or dysfunctional cause your Hyundai Elantra to shake because they prevent the fuel needed to enter the combustion chamber. Apart from that, when the fuel injectors are also leaking, they can also cause severe damage to the engine. To fix this hindrance, you can clean your Elantra's fuel ...

The most common reasons a Hyundai Elantra has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. 0 %. 34 % of the time it's the. Vacuum Leak. 0 %. 21 % of the time it's the. Spark Plugs.jung woong han. Participant. I have 2009 Hyundai Elantra and engine vibrates at idle. It stop vibrate at right over 1000rpm. My fuel trim is normal, I check for vacuum leak but no luck and I even test engine with vacuum gauge. and engine is helathy at 22inHg. At dealershop they said I have bad fuel pulsation damper and it is making noise. In many vehicles a common cause of engine vibration is worn out or faulty sparkplugs. Worn out or dirty sparkplugs will cause the2013 Hyundai Elantra s engine to misfire or not properly fire on each and every cylinder. When this occurs, it is commonly referred to as the engine missing or not firing on all cylinders. Driving while overheating can cause long term engine damage. 2. White Smoke. If your Elantra's engine gets hot enough, the coolant will begin to boil over and manifest itself as steam coming up from under the hood. It does this to relieve the pressure on the cooling system before lasting damage can occur. 3.My 2011 Elantra is shaking rough occasionally while idling with the a/c on - Answered by a verified Hyundai Mechanic We use cookies to give you the best possible experience on our website. By continuing to use this site you consent to the use of cookies on your device as described in our cookie policy unless you have disabled them.The engine will stall at idle after throughly warming up. It sputters for 1-4seconds and then stalls, not immediately but after 4-5 minutes. You can immediately restart and it will again idle normally for a less time-2-4 minutes and stall again. On start up, the engine is noisy for a couple of seconds and quiets down.

It will idle at 900 on cold-start, down to 750rpms, then once it warms up more, start dropping as low as 400rpms, up to 1100 and down and up again, repeatedly, while misfiring. Also misfires (putt-putt effect) from around 750rpms up to ~2,000 rpms until it gets above 2,000 and then seems to smooth out. The engine seems to shake and the car ...21K views 14 replies 13 participants last post by jwt873 Oct 27, 2015. A. Arzt Discussion starter. 23 posts · Joined 2011. #1 · Dec 6, 2011. Sometimes when I stand at idle, the engine seems to vibrate more than usual. I looked at the RPM gauge and it didn't move at all, it's at roughly 1000-1100 RPM when it occurs.With the IAC unplugged and with the vehicle idling we need to adjust the throttle stop screw so it idles at 500rpm. Once set address the poor IAC valve connection either being a bad IAC or damaged wires or pins. Once that is addressed disconnect the negative battery cable.NOTE: 1.) do this when the engine is cold -a hot block can ignite fluid. 2.) Use the starter fluid sparingly -too much will not completely evaporate as the engine gets hot. 3.) Be careful around electrical connectors, especially the spark plugs -electrical leakage may cause a spark, setting everything on fire. I have 2013 Hyundai Elantra with 55k miles on it, still under warranty (up to 60k). Toward mid-late December last year I noticed my car started to vibrate (no noticeable noise of any kind) when I would stop at traffic lights with my foot on the brake. Once, I release the brake and start to drive the vibration stops and the car runs exactly how ... Idle to low. I have an elantra 2009 Se, my car goes down to 600 rpms and shakes when I stop. It has 186.000 miles. I replaced the battery, I already replace the IAC, spark plugs, spartk plug cable, New alternator, new belts, new timing chain along with the water pump, I replaced the maf, I replace engine oil every 4 months, I replace the purge ...Common Causes Of Shaking. Experiencing shaking in your Hyundai Elantra can be a result of various issues. Imbalanced wheel alignment is a common culprit, leading to uneven tire wear and vibration, while worn out or unbalanced tires can also cause shaking, especially at higher speeds. Furthermore, suspension issues such as worn-out shocks or ...

13394 posts · Joined 2014. #7 · Jun 8, 2015. Gee, I paid $55 to the dealer to have him look for a similar rattle, and what it was was the bracket that is welded to the exhaust that attaches to the hanger. I realized this three weeks later when I was having tires installed. I'm a bit miffed at the $55 "Diagnosis fee".Loose or Disconnected Hoses. Loose or disconnected hoses can also be a common cause of many types of engine vibration. A loose or disconnected air hose or vacuum hose can cause quite a bit of violent shaking and vibration in your 2018 Hyundai Elantra sport's engine. To correct the problem, simply look for any loose or disconnected hoses and ...2013 Hyundai Elantra jerks/jumps while driving and at idle. Seems worse when the AC is running. 96000 and 1.8 liter. ... 2013 Hyundai Elantra Misfire cylinder 4. Idling. 124000. New. ... It's shaking. 2017 Hyundai Elantra Se. 76700. I was told. i was told that it was the coils so I had those replaced and that didn't solve the issue ...You're in luck that you at least have a check engine light on, so if it gets scanned it will tell you a code for what to look for. It can be one or many of a few things; Poor quality fuel, bad injectors, bad spark plugs, bad fuel pump, or a vacuum leak. 3. Reply. MrCommentor69 • 2 yr. ago. Same happend to my car, did u fill up recently. 2 ...I have the same exact problem with my 2012 Hyundai Azera. It shakes pretty bad when it's parked or stopped at a light. I took it to the Hyundai dealer more than 10 times. Every time that I took it there it had the same problem (rough idle) I was calling the Hyundai corporate office almost every day for about 4 months.

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ProX. 93 posts · Joined 2010. #3 · Apr 23, 2010. A quick check would be to turn the A/C on and then check to see that the cooling fan is on. If it is, then you could have a faulty temp sensor (not sending unit) or maybe a bad relay if it has separate ones for cooling and A/C. If not, it could be that the fan is bad or your fuse is toast.One time, I was at a stoplight and the rpm's started to go down (dying). Quickly, I have shifted to "N" (push the lever with two fingers, no need to press the side button) and the engine rpm's went up and stayed on. When green light came, shifted back in "D" and drove fine. Crankshaft Position Sensor is CKP.The only problem is once the fans and compressor kick on, it gets a rough idle. I thought for the past week it might be a weak battery cable because my lights dim a lot at night when rolling up or down windows, etc. I put a new 2 gauge thick ground cable in, and it helped a little bit, but it still like shaky rough when at idle.Engine clicks at idle and then makes humming noise. Hey every I have a 2017 Elantra se with the 6 speed manual. I had two questions regarding some concerns…. (1) when I am idling regardless of the heat on or not I once and a while hear a "click" noise like a light switch flicked on and the engine starts to make this whirring sound that ...42dot is in merger talks with Hyundai Motor, but terms, including stake size and deal valuation, hadn't materialized yet. Hyundai Motor is considering increasing its stake in, or f...When random stalling happens, the first thing to do on an Elantra is to change the oil and filter. What happens is that the oil cvv timing solenoids get dirty. They can't do their thing so they retard the timing so much that is cuts the engine, usually on deceleration. Hdeegan26 and Andy Schmidt.

The 2018 Hyundai Elantra has 84 NHTSA complaints for the engine at 19,310 miles average. (Page 1 of 5)2. Elantra Shop Manual. This is another good resource. It is meant for Hyundai Dealers. It has repair guides on how to do anything. It is great especially for checking specs and such but doesn't have pictures like YOUCANIC. Elantra Service Manual. 3. Hyundai Elantra Owner's Manual in PDF.2000 hyundai elantra 1,333 MILES Hyundai elantra 2000 shakes at red lights and when turned on and park have to floor gas pedal just to get to 20-25 mph and idle jumps above one when in park shakes no power really sometimes when it shakes the lights dimNOTE: 1.) do this when the engine is cold -a hot block can ignite fluid. 2.) Use the starter fluid sparingly -too much will not completely evaporate as the engine gets hot. 3.) Be careful around electrical connectors, especially the spark plugs -electrical leakage may cause a spark, setting everything on fire.I have a 2012 Elantra that I bought used with 15,000 miles on it. Since the day I bought it I have had different issues with it but one of my huge issues is that when in idle at a light or sitting still anywhere my car shakes like someone is bouncing a basketball in it.ROUGH IDLING AND STALLING. It never rains it just pours....I was about to return my friends OB2 Scanner to my friend and I noticed that earlier today my i10, 1.2 was struggling when idling. But...no loss of power and no Check Engine Light. Then suddenly the stalling started, not during acceleration but only at idle.I just purchased a 2017 Elantra and I felt a vibration at higher speeds and thought tires needed a wheel balance. Took it to the tire center and I learned I had 2 bent rims. ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing. Sometimes, idling problems that cause engine vibration may be as simple as adjusting the idle on a carburetor or cleaning components in the fuel intake system so that fuel passes through the engine more easily creating cleaner and more efficient combustion your 2016 Hyundai Elantra sedan's engine. Hyundai Elantra shaking at idle is a common problem that can be caused by a few different things. The most common causes are worn engine mounts, an unbalanced or misfiring engine, and a faulty mass airflow sensor (MAF). Worn engine mounts can cause the entire car to shake while idling, as they are responsible for keeping the engine in place. ...

On average, the cost for a Hyundai Elantra GT Car is shaking or vibrating Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location. Car Service ... As mounts wear over time, the vibration may be more pronounced at idle while in gear, and may change when the vehicle is placed in neutral or park. Broken ...

The engine will stall at idle after throughly warming up. It sputters for 1-4seconds and then stalls, not immediately but after 4-5 minutes. You can immediately restart and it will again idle normally for a less time-2-4 minutes and stall again. On start up, the engine is noisy for a couple of seconds and quiets down.2018 Hyundai Elantra SEL randomly turns off when slowing down, stopped, or accelerating. Hi guys. My car has 80.1k miles on it and the engine is turning off sporadically when I'm slowing down, coasting through a parking lot, stopped, or accelerating. I just got an oil change, my spark plugs have been changed, my fuel pump is fine, and my ...Every Elantra I've heard is that way after the engine is broken in. Make sure your using Hyundai oil filters they have an anti drain back valve in them to help keep oil in the top of the engine. My engine has a noticeable tick when cold but it goes away after it warms up. Sent from my iPhone using Tapatalk. Like. C.Spray a throttle body cleaner on a clean cloth. Use the cloth to clean the throttle body carefully. If a dirty throttle body was the cause, then you will have fixed the issue. In some cases, this problem would be due to a faulty AC compressor. In this case, you will be required to change and replace the AC compressor.About a week ago my 2013 Elantra started idling hard when stopped, almost shaking the whole car. About 3 days ago, it started happening while driving as …January 26, 2023 by Jason. It can be very jarring when your Hyundai Elantra shakes when idle. If your Elantra has this problem, many issues can cause it. We’ve lined out some of the most common causes below. The most common reasons a vehicle shakes when idling is a misfire or bad motor mount. Table of Contents.The 2017 Hyundai Elantra has 217 NHTSA complaints for the engine at 22,358 miles average. (Page 1 of 11) ... On 10/1/2023 car starting jerking and shaking while waiting in a drive thru, this time ...Elantra 2014 vibrates when stop or idle. Jump to Latest Follow 658 views 1 reply 2 participants last post by Dog Patch Steve Jun 28, 2023The idle speed with the brake depressed will drop to around 600 RPM and will be accompanied with a vibrating brake pedal. My current odometer reading is 3,926 miles. ... I did the CRC treatment and my shakes went away . ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing.Is your car shaking or vibrating while at a stop? Watch this video to learn the main causes and how to diagnose and fix them. Josh, the budget mechanic Hawaii, shares his tips and tricks on rough ...

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Failure Date: 04/16/2021. The contact owns a 2017 Hyundai Elantra. The contact stated while driving 46 mph, the vehicle loss motive power and stalled with the oil and check engine warning lights illuminated. The contact stated that the failure occurred while driving uphill. Additionally, the failure was experienced while driving at various ...Advice for shaking Hyundai Elantra 2017 SE . I drive a 2017 Hyundai Elantra SE. I have been having an issue where the car will intermittently shake and sometimes become hard to accelerate and the check engine light will come on. Two days ago the check engine light came on and was not going off and I took it in to a mechanic.The "Hyundai tick of death" is not the 2-3 second startup tick. That is a common problem many manufactures chain tensioners have, lose until oil pressure comes up. The wife's Rav4 has it too. The tick of death starts out ticking for the full workup 4 minutes or more in a very cold morning in winter here in Minneapolis.Idle to low. I have an elantra 2009 Se, my car goes down to 600 rpms and shakes when I stop. It has 186.000 miles. I replaced the battery, I already replace the IAC, spark plugs, spartk plug cable, New alternator, new belts, new timing chain along with the water pump, I replaced the maf, I replace engine oil every 4 months, I replace the purge ...Ok the most common issue is the mass air flow sensor has failed, This adjusts the air fuel ratio and when these fail it will cause your issues. It can also be …I have a 2015 Hyundai Elantra Limited w/ almost 77k miles. In the past week or two I have noticed shaking when at idle. It all started with feeling like my car was going to stall out at red lights(it never actually did) so I had my spark plugs changed and throttle body cleaned 3 days ago.Oct 27, 2022 · Hey guys, so this elantra with just over 100k km came in to our shop with the complain of engine shaking and stalling on a stop. I checked for codes but we d... The 2013 Hyundai Elantra has 17 problems reported for runs roughly, shaking and vibrating. Average failure mileage is 43,200 miles.1 post · Joined 2017. #1 · Mar 7, 2017. on our 2013 Elantra we're having intermittent problems with the engine losing power while driving and the tachometer reading "0", yet the engine is still running. had to turn off and on about 4 or 5 times this evening to get the car to "reset" itself. usually happens around 35-55 mph but this evening it ...Repair and replacing an Idle air control valve on a 2003 Hyundai Elantra.If this video has any monetary value to you please click on the link and donate.www.... ….

Bad Idle Air Control Valve. A bad idle control valve can also lead to fluctuations in the RPM. If you’re noticing that your RPM are constantly going up and down, even when you’re not accelerating, it’s likely that you have a bad idle air control valve. The best way to determine if your idle air control valve is the issue is to check ...Idle Wobble in my 3 Hyundais, especially 2010 Santa Fe and 2010 Tucson were caused by ... The transmission was shifting in and out of lock and gears at stop lights causing the motor to shake (Santa Fe). 2). Wrong Diff. Gear Oil. My Santa Fe and Tucson are AWD with electronic locking feature. ... Hyundai cars from the Sonata to the Elantra and ...The Elantra is known for random bouts of shaking due to its "smart" alternator which puts a sudden load on the engine when the battery needs charging. Switching on the A/C during one of these charging cycles tends to make the shaking worse, due to the added load it places on the engine in addition to the alternator.22 posts · Joined 2011. #7 · Jul 20, 2014. Finally cleaned my throttle body, and put a whole can of seafoam in my gas tank. The idle seems to be smoother. Disconnected the battery and used a soft cotton cloth and some alcohol. Sent from my iPhone using JeepGarage.Spark Plug Wires - While only some models and engine combinations of vehicles today come with spark plug wires (a lot are now coil-on plug), if your Santa Fe happens to have them, they can go bad and cause a rough idle. Here's a great video on how to diagnose faulty plug wires with a multimeter. 2. Vacuum Leak.6721 posts · Joined 2011. #4 · Aug 2, 2017. Without hearing the noise, it is hard to speculate. The HP fuel pump on the GDI motors makes a clicking noise, but I don't think the 13 EGT has a GDI engine. It could be valvetrain noise, it could be slop in the timing chain, it could be the timing chain tensioner, although the tensioner normally ...1 post · Joined 2022. #1 · Sep 10, 2022. I have a 2016 Elantra that has a slight vibration when at idle. You can slightly feel it in the seat and the vibration doesn’t go away if you put the car in neutral. I just bought the car and the dealership said they did a full inspection prior to selling me the car and they didn’t find any issues.I have an elantra 2009 Se, my car goes down to 600 rpms and shakes when I stop. It has 186.000 miles. I replaced the battery, I already replace the IAC, spark plugs, spartk plug cable, New alternator, new belts, new timing chain along with the water pump, I replaced the maf, I replace engine oil every 4 months, I replace the purge valve, new air filter, replaced transmission oil, New ... Hyundai elantra shaking at idle, 2017 Hyundai Elantra shaking when idle... Bought it as a certified pre-owned with 45,000 miles on it in June. Just last week, when getting off the freeway at a light the car shakes a bit, like it's about to turn off but hasn't, yet. No idication lights on. It's done it a few times., Like. fenixignition. 421 posts · Joined 2009. #4 · Mar 6, 2014. MIL is Maintainence Indicator Light. also known as the Check Engine Light. sounds like a bad evap solenoid or something related to vacuum. if you have a vacuum leak, it can cause a rough idle. depending on where its at. ive seen a toyota camry evap solenoid go bad, and when it ..., About a week ago my 2013 Elantra started idling hard when stopped, almost shaking the whole car. About 3 days ago, it started happening while driving as well. Today it was shaking hard at the stop light and when I started to accelerate it never stopped, almost got worse and then the engine light went on., When the electrical load is needed, the car bogs at idle for a split second or two. This can come across as a rough idle, and more than momentarily if the battery is bad. If the battery is losing a cell, or just old/dying, more power is used to try and charge it, taxing the alternator quite a bit., Idle Wobble in my 3 Hyundais, especially 2010 Santa Fe and 2010 Tucson were caused by ... The transmission was shifting in and out of lock and gears at stop lights causing the motor to shake (Santa Fe). 2). Wrong Diff. Gear Oil. My Santa Fe and Tucson are AWD with electronic locking feature. ... Hyundai cars from the Sonata to the Elantra and ..., Is your car shaking or vibrating while at a stop? Watch this video to learn the main causes and how to diagnose and fix them. Josh, the budget mechanic Hawaii, shares his tips and tricks on rough ..., engine sound during idle. ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing. Explore Our Forums. YF (2011-2014) Sonata/i45 MD (2011-2016) Elantra sedan/coupe NF (2006-2010) Sonata CM (2007-2012) Santa Fe MC (2006-2011) Accent., Hyundai's seat belt problems keep increasing. On March 3, 2022, they issued a recall for 140 2022 Elantra and Elantra HEV sedans. The problem, they explain, is that if the vehicle is in a crash, "the front passenger-side seat belt pretensioner may explode upon deployment.". And, an exploding seat belt pretensioner "can project metal ..., TXKona. So when I first posted in this thread, the car was at 7k or so and in spring. Now after summer running the AC everyday and the car at 10k, there is no more rough idle or engine shaking at the stop light. Moral of story, maybe the engine needs to have the AC on for at least 1kmiles or so and it will adapt., 2012 Hyundai Elantra Limited Used Car issues 1 Answer. So I got this car a couple months ago from Carmax, cosmetically its perfect but I notice such awkward things. First thing I've noticed, it idle shakes, like a manual would before it stalls out. I to..., I have a 2015 Hyundai Elantra Limited w/ almost 77k miles. In the past week or two I have noticed shaking when at idle. It all started with feeling like my car was going to stall out at red lights(it never actually did) so I had my spark plugs changed and throttle body cleaned 3 days ago., Elantra. 2017. As the owner of a 2017 Hyundai Elantra, you may have found that your vehicle is idling roughly. This can have a couple of causes, many of which have been reported for this Make and model. First, you may be experiencing a leak in the vacuum hoses. If this is the case, you will pay between $12 and $19 on average for a new hose., Vehicle: 2001 Hyundai Tiburon. My shaking went away when I changed my flywheel. There's alot of things that can be going on, fouled spark plugs, clogged PCV, plug wires... Open your operators manual and perform the required maintenance items which correspond to your current milage versus the last time you performed maintenance., 179,000 miles. The contact owns a 2015 Hyundai Elantra. The contact stated that while driving at an undisclosed speed, cylinder #3 misfired and check engine warning light illuminated. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure., 2013 Hyundai Elantra Limited - Engine Malfunction Light and Vibration 2 Answers. Hi, I have a 2013 Hyundai Elantra which has engine malfunction light on car also vibrates when idle. Upon getting it checked by dealership, they told me: 1. Ignition Coil#2 Shorted. 2. Spark plugs (a..., 2017 Elantra shakes while idle - check engine light on but disappears when pressing the brakes. Elantra. Hi all! I have a 2017 Elantra that I leased for 36 months and then …, The most common reasons a 2019 Hyundai Elantra has rough idle are a vacuum leak, an issue with the spark plugs, or a problem with the ignition coil. 0 % 34% of the time it's the, The Hyundai Elantra has been around since 1991, but wasn't made available in North America or Europe until 1993. Featuring different four-cylinder engines throughout its generation..., Nov 8, 2012 · The car has about 114,000 miles on it I believe. My problem is that I have an annoying vibration at idle and at highway speeds of 60-65 mph. The vibration decreases somewhat towards 70 mph. The vibration at idle is usually present, but sometimes vanishes for no apparent reason. The car is very smooth below 55 mph, but when around 60-65 mph ... , 1. Pull the intake hose off below the MAF and block it with the engine running. If the engine doesn't die you have a vacuum leak somewhere between there and the cylinder head. If it does die, it's more than likely your IAC or improperly adjusted/stuck throttle body. 2., Aug 14, 2020 · 11 posts · Joined 2019. #1 · Aug 14, 2020. 2017 Hyundai Elantra is displaying check engine light when accelerator /brake pedal is used, no light on when cruising on constant speed / declaration and engine shudders at idle ( traffic stops etc., ) . This happens occasionally and when i shut off the engine at a safe place and turn back on , the ... , My 2003 Hyundai Elantra GT jerks when you put it in Drive. The RPMs goes higher than normal when I drive it. I got codes P0113 intake air sensor High, and code P1529 transmission control module TCM. ... My elantra shakes when idle, not always but it has been getting more frequent ..., Remove your spark plugs and see if the ends look corroded or damaged. Usually the misfire code will point to a specific cylinder, so you can move plugs to see if the misfire moves when plugs are moved. If the misfire doesn't move, replace the ignition coil of the misfiring cylinder. 1. Reply., 6721 posts · Joined 2011. #4 · Aug 2, 2017. Without hearing the noise, it is hard to speculate. The HP fuel pump on the GDI motors makes a clicking noise, but I don't think the 13 EGT has a GDI engine. It could be valvetrain noise, it could be slop in the timing chain, it could be the timing chain tensioner, although the tensioner normally ..., Hyundai Accent 1.4 2012, Manual Transmission 5 Speed, ODO 126000 KM (Saudi Arabia) My car recently started shaking a little on idle, when AC is on in every 20-25 seconds, RPM around 700. when car is running there is absolutely no issue at all, even if i push throttle (in neutral position) a little and manage to increase RPM to around 950-1000 ..., Interestingly, I opened the hood of my '13 GT yesterday while it was in Park and running and noticed that the engine has an ongoing shake at idle (not severe) but that it is bolted to something on the left (facing car) which seems to act as a sort of shock absorber as the engine shake is barely if at all noticeable in the car., About a week ago my 2013 Elantra started idling hard when stopped, almost shaking the whole car. About 3 days ago, it started happening while driving as well. Today it was shaking hard at the stop light and when I started to accelerate it never stopped, almost got worse and then the engine light went on., After the reversal of tire rotation, I drove Interstate for test drive. Surprisingly, shaking and vibration stopped. My wife will use Elantra to go to work at weekend and I hope there will be no more problem. Recently she wrecked a 2007 Honda Civic with only 39,000 miles on it. It was a total loss. We bought a brand new 2014 Hyundai Sonata., RPM gauge needle keeps shaking as well... even in idle. ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing. Explore Our Forums. YF (2011-2014) Sonata/i45 MD (2011-2016) Elantra sedan/coupe NF (2006-2010) Sonata CM (2007-2012) Santa Fe MC (2006-2011) Accent., Elantra. 2017. As the owner of a 2017 Hyundai Elantra, you may have found that your vehicle is idling roughly. This can have a couple of causes, many of which have been reported for this Make and model. First, you may be experiencing a leak in the vacuum hoses. If this is the case, you will pay between $12 and $19 on average for a new hose., When a Spark Plug is misfiring, it is often most pronounced at idle speed. This is because when the engine turns slower, it is easier to detect. You'll feel a rough vibration. Conclusion: Bad Coil Packs Hyundai Elantra. Be aware that almost all symptoms of a bad coil pack in your Elantra could also be other issues with the ignition system as ..., It could be an engine misfire, but that would likely result in a check engine light being on. Aside from that, it could be something like an engine mount that has had the rubber portion partially break and allows the engine to "bottom out" against one side of the mount, causing more vibration to transfer into the body of the car. 1., Rough idle within 30 seconds of a cold start. ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing. Explore Our Forums. YF (2011-2014) Sonata/i45 MD (2011-2016) Elantra sedan/coupe NF (2006-2010) Sonata CM (2007-2012) Santa Fe MC (2006-2011) Accent.