Hyundai elantra shaking at idle

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

Hyundai karaoke discs are programmed with music, video and scrolling lyrics for playback on a karaoke machine connected to a TV or monitor. These discs can also be played on a comp...Vehicle Speed: A Misfire can be felt at any speed, but is most noticeable at low RPM. A misfiring engine is one of the most common reasons your Elantra will shake when accelerating. A vehicle’s ignition system consists of spark plugs, coil packs, and maybe plug wires. If it is an older model, it’ll have a distributor and coil instead of ...While accelerating, it feels like the power is "slipping" away from the accelerator; when I'm idling, the car is shaking in waves (coming and going) while the RPMs increase and decrease ~500rpm--idling is rough. The check engine light flashes on/off (i.e., on, off, on, off, then stays off). Occasionally, the check engine light will stay on and ...The salesman told me by using eco mode at times of idle, such as traffic lights. The eco mode will actually cut power to the AC unit to keep the car running smoother at idle. By not using eco mode the car isnt generating enough power to keep the AC running and a smooth idle.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 ...That's why in this article, we'll be discussing a common issue in modern cars, specifically the engine shaking or trembling when an Hyundai Elantra is at idle. This is a topic not often covered, so we thought it would be useful to explore it and provide you with an idea of what might be causing your Hyundai Elantra's engine to shake when it's ...A vibration at idle can be caused by many different issues, such as a dirty throttle body, vacuum leak, clogged fuel or air filter, low idle speed, spark plugs, fuel injector, oxygen sensor, etc. ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing.

Ignition: If it is your ignition that is producing your Hyundai Elantra’s idle vibrations, you will have to pass the vehicle through the diagnostic kit to get more information on the exact problem. And consider a replacement of defective parts, or an ECU adjustment. Motor Silent Blocks: The last trigger of vibration at standstill on your ...Car shakes/weird idle. 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.Hyundai Tech Bulletin recommends 10oz Chevron Techroline every 3000-5000 miles at oil change, to prevent carbon build up and keep injectors clean. The fuel filter is next to impossible to service, being mounted on the gas pump in the gas tank. 7) Clean your throttle body and idle control circuit tiny port. Be careful of Mass Air Sensor.FordFasteRR. 3950 posts · Joined 2004. #5 · Jul 20, 2005 (Edited) you only need to read codes if your check engine light is on or has been on recently.. and here is my suggestion for your tune-up. #1. new spark plugs. #2. new spark plug wires. #3. clean the coil pack sockets before you install the new wires. #4.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.What is the difference between a wooden shake and a wooden shingle? Although both materials can be made from the same log, shakes and shingles are not the Expert Advice On Improvin...

2016 Hyundai Elantra vibrating/shaking while idle. So my 2016 Elantra is shaking when Idle. The car has 38,000 miles on it. The check engine light isn't on or anything. So when the car is in park it's a vibration that goes from faint to moderate. It also vibrates when stopped at a red light or stop sign.2013 Hyundai Elantra shaking problem. Hello, I been driving my mom's Hyundai Elantra for the past 4 months. Car never had any major problems, I do all the oil changes at the correct intervals. Lately I noticed when the car is in drive and I stop at a stoplight there will be a slight shake. Now it's gotten a little worse and now everytime I stop ...Engine is shaking, pulsating or vibrating Inspection. Estimate. $99.99. Shop/Dealer Price. $110.24 - $117.94. Show example Hyundai Elantra Engine is shaking, pulsating or vibrating Inspection prices. Any unusual shaking or vibrating forces coming from the engine is cause for concern.Engine light and shaking / vibration happened for months. Drove normally 80% of the time and did what’s shown in the video the other 20%. Took it to Hyundai ...The Hyundai Elantra has long been a popular choice among car buyers, known for its reliability, fuel efficiency, and sleek design. If you’re in the market for a new Elantra, you ma...Aug 22, 2017. 2012 Hyundai Elantra Limited, automatic, Push to Start, at about 95000 miles. Three months ago, I've started noticing my car wouldn't turn over on my first attempt. I get a *whir, whir, whir, whir* attempt, and when it finally turns over, it's a very rough idle. I turn it off, and then try again, and it turns over on the very ...

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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 excessive carbon build up as well as needing a simple tune up. This is what needs to be done to properly diagnose and fix this issue .Find the location of the MAF sensor in your Elantra, unplug the electrical connectors, and remove the sensor from the housing. Spray at least 10 spurts of MAF cleaner onto the sensor and then let it air dry for an hour or until completely dry. Do not use cloth or cotton swabs to clean the sensor, as it can damage it.Mar 6, 2014 · 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 ... Hyundai Models. Elantra & Lantra Forums. MD (2011-2016) Elantra sedan/coupe. Car Shaking While Neutral? 4803 Views ...If I stop moving, the engine will sputter and shake the whole car. Whenever this happens, I can pull over to the side of the road, turn my car off and then back on and the problem will go away. ... My hyundai elantra has the exact same issue. Hjundos, Apr 18, 2021 #3. grego68. Joined: Sep 15, 2021 Messages: 7 Likes Received: 2.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.

Below are 5 reasons behind abnormal engine vibration. Worn out or Faulty Spark Plugs. A worn out or faulty spark plug is a leading cause why your car engine vibrates or shakes uncontrollably. A worn out spark plug can prevent the fuel-air mixture to not get properly ignited in the cylinders, thus leading to misfiring.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...Vibrates excessively while idling. : r/Hyundai. 2015 Elantra. Vibrates excessively while idling. Simply put, the car vibrates when idling at a stop. It does not do it while driving. No lights on the dash and no other drivability issues. I would look at the engine when idling and it appears to vibrate normally. Even with my hand on it it shakes ok.One possibility is that you have something caught in your wheel. If there’s something caught in your wheel, it will cause your RPM to jump up and down as you drive. Another possibility is that you have a problem with your transmission. If your transmission is bad, it will cause your RPM to fluctuate as you accelerate.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 2022 Hyundai Elantra 's engine.Car running rough and occasionally stalls when I stop. 2017 hyundai elantra. Not fixing myself, replaced coil pack - Answered by a verified Hyundai Mechanic ... It's shaking. 2017 Hyundai Elantra Se. 76700. I was told ... I have a 2003 Hyundai Elantra, 5 speed. The car is stalling at idle. Check engine light is on. I've noticed that the rpms ...2019 Elantra at about 130k. Only happens when I turn it on (the shaking). The engine light is on the whole time but it doesn't shake while driving or stopping. Only when I turn it on and idle. I read in another post that it could be coils and potentially covered. Is this something the dealership should have noticed?The most obvious causes of your car shaking in idle are: Bad CV joints - Working together with the drive shaft, cv joints get the engine power to the wheels and, if damaged, can be the cause of the vehicle shaking in idle. Broken Engine Mounts - As the name implies, these components help affix the engine to the vehicle.

p0303- cyl 3 misfire. another code cant remember about bank 1 being too lean and a few others. car would idle rough, spit and sputter. after swapping coils, fuel injectors, cleaning MAF and TB, changing spark plugs and wires, nothing was working. with car running unplugged each injector to test, cyl 3 had no change. removed fuel rail to check ...

Find the location of the MAF sensor in your Elantra, unplug the electrical connectors, and remove the sensor from the housing. Spray at least 10 spurts of MAF cleaner onto the sensor and then let it air dry for an hour or until completely dry. Do not use cloth or cotton swabs to clean the sensor, as it can damage it.I was driving and the car started to shake/run rough, and the oil pressure light came on. I pulled over, turned the car off, and turned it back on, ran fine. ... Low idle can slow the oil pump down and cause the oil light. ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing.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 ...2017 Hyundai Elantra SE here. Had vehicle running and idle. ... I understand the issue you're facing with your 2017 Hyundai Elantra SE, as you put the car onto idle and you sent me readings! FYI Sebastian, the reading you sent are OK and normal, also as there is no CEL popping there is no issue with your car! ... My Hyundai Elantra 2017 shakes ...my elantra 2004 2 liter little shakes at idle speed and increase when i turn on the air conditioner how can i find the reason ... Asked by honest76 Mar 26, 2015 at 06:33 PM about the 2004 Hyundai Elantra GLS Sedan FWD. Question type: Maintenance & Repair. 1 Answer. Report; honest76 answered 9 years ago yes its on but according to check codes no ...Used Hyundai Elantra Overview. The Hyundai Elantra is a compact sedan that has been in production since 1990. Over the years, the Elantra has gone through several different …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 …2017 hyundai elantra check engine light comes on at times and car shakes took to hyundai dealership motor replaced new spark plugs put in also replacement of coils been dealing for a whole year same p … read moreIdle 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 ...After a Kia and Hyundai agreed to a $200 million car theft settlement, it's still hard for vehicle owners to get affordable auto insurance. By clicking "TRY IT", I agree to receive...

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1. Fix and Wait. The best way to clear the check engine light is to pull the trouble code, identify and fix the issue and then drive your Elantra around until the module that threw the code recognizes that the problem is fixed. Sometimes it can take a few drive cycles for your car's check engine light to shut down.A severe case of engine misfire may cause vehicle shaking and trigger the check engine light. An engine misfire occurs when there’s incomplete or zero combustion in one of the cylinders. It’s never safe to drive when your car is shaking. Doing so can damage the catalytic converter and other costly parts. There’s an endless list of reasons ...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... #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 …Your Hyundai Elantra may shake due to tire balance or wheel alignment issues. These problems can result in uneven tire wear and vibrations while driving. Common Causes of Hyundai Elantra Shaking Hyundai Elantra shaking can be attributed to various causes, including worn-out suspension components, misaligned wheels, …I have a 2011 Hyundai Elantra with about 120K miles on it. For the last several weeks, it's been shaking/vibrating whenever I'm at a stoplight for more than 30 seconds or so. Sometimes it happens when backing out of a parking spot. Also, the battery light sometimes flickers on and off while this is happening. (No check engine light.)ELANTRA DIES AT IDLE ‚ NO DTCS. May. 09 2017. Vehicle: 2012 Hyundai Elantra, L4-1.8L, Automatic Transaxle. Mileage: 118,998. Problem: The customer's concern was that engine would not idle after it had warmed up. The malfunction indication light was OFF. If the engine speed was held over 800-850 rpm, the engine would stay running. Details: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".Sep 29, 2018 ... In this video I am going to cover in all the reasons and symptoms your car may be shaking or vibrating. Whether you feel vibration at idle, ...Some of the most common causes include misfiring cylinders, bad motor mounts, and engine damage. Key Takeaways. Misfiring is the number one reason why a … ….

Veículo disponível (Único dono) Não possuí sinistro Sem passagem por leilão Rec. ADMINISTRADORA PARCELAMOS = entrada+parcela DISPENSO...A shaking Hyundai Elantra means that there is something wrong with the engine, and this has something to do with the spark plugs, wires, or batteries. ... Additionally, low oil also results in causing a rough idle, which causes your vehicle to debilitate. Over some time, the engine ages, and some oil gets burned, which causes it to drop low ...Step 1. Locate the PCV valve on the Hyundai Santa Fe. You'll find the Santa Fe PCV valve on the back of the valve cover with a hose attaching it to the intake manifold. Step 2. Start your car and allow it to idle. Remove the PCV valve by pulling it away from the valve cover. Test the PCV valve while it's still attached to the hose by feeling ...Shakes when idle, smooths out while driving, thunking sound when shifting, no code. Your Elantra’s engine mounts connect it to the chassis. If they wear out, it can cause a shaking condition when idle. You should also feel the shaking more in gear than when you are in park. It would also feel shaky as the … See moreThe 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. ... 2019 Hyundai Santa Fe 2.4 GDI @ 37k -- Mobil-1 EP 10w30 / Euro 0w40 FrankenBlend ... Hyundai cars from the Sonata to the Elantra and even the new Kona! …For your 2022 Hyundai Elantra. We're Sorry. Because our info comes from recent repairs and maintenance orders, sometimes there's not enough info available to display common problems for all vehicles.Maintenance/Repairs. catalytic-converters, check-engine-light, hyundai, elantra. Jamie5524 April 5, 2018, 1:34am 1. I have a 2006 Hyundai Elantra. I was driving it today, and while idled at a red light, the car began shaking and my check engine light started flashing. I know that means stop immediately, but it was a few minutes before I got to ...When my car was "breaking in" I had some occasional rough idle. I think things were loosening up and settling in. Now, at over 8k, no rough idle whatsoever. ... Former driver of 2011 Elantra Limited no tech, ... Hyundai cars from the Sonata to the Elantra and even the new Kona! Show Less . Full Forum Listing.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. Hyundai elantra shaking at idle, Hyundai elantra rough idle diagnosing the rough idle issue in hyundai elantra requires a few tools such as a scanner and a multimeter. Begin by checking for any vacuum leaks or damaged hoses. Next, check the air filter to make sure it's clean and free from debris. Another troubleshooting procedure is to clean the throttle body with some carb ..., sbr711. Slow idle harmonics,,, turn on A/C steps idle up slightly to help dampen crankshaft pulses.... same effect as your lawnmower at slow speed,, run it up and fire pulses is so close together it cancel out the feel.. <--- Please fill in the 'location' and 'what you drive (year & chassis) and engine size ' boxes on your personal profile page ..., Indian Twitter users to trend #BoycottHyundai. Update: The South Korean government has reacted to the controversy saying it “regretted the offence caused to the people of India” ov..., Please help the girl. Here is the problem: The car runs PERFECTLY when driving, but it WON'T IDLE on its own. She has to keep her foot on gas all the time or it will die. Originally the problem started as a low and oscillating idle RPM. Then is went away for a few days, but later it got worse and now it won't idle at all., May 25, 2019 · 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 (all) need to be replaced. 3. Complete Fuel System cleaned. I bought the car home and replaced #2 coil and all spark plugs. , HyundaiAccentAtJerking, Find the location of the MAF sensor in your Elantra, unplug the electrical connectors, and remove the sensor from the housing. Spray at least 10 spurts of MAF cleaner onto the sensor and then let it air dry for an hour or until completely dry. Do not use cloth or cotton swabs to clean the sensor, as it can damage it., 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., Subscribe LikeShareComment #idlereset#idlerelearn#idleresetaftercleanthrottlebody#throttlebody#hyundaielantra#carwork, p0303- cyl 3 misfire. another code cant remember about bank 1 being too lean and a few others. car would idle rough, spit and sputter. after swapping coils, fuel injectors, cleaning MAF and TB, changing spark plugs and wires, nothing was working. with car running unplugged each injector to test, cyl 3 had no change. removed fuel rail to …, 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., My daughter's 2001 Elantra has been throwing a 0303 ODS code for a month now. Coil, plugs and plug wires have all been replaced. Now car won't slow idle but when cold, idle runs up and down from 1000 to 2500 then as warms just idles faster and faster, up to 5000 RPM. If Idle Speed Control is disconnected, idle will drop but fluctuate between ..., My 2001 elantra does the same thing. Idles at 3000 rpm. It use to idle at 1200 rpm so I replaced the iac and now it runs at 3000. There are no air leaks and when I disconnected the pigtail connector to the iac it runs rough but at 1100. I think I may have got a bad iac. It is a wells from advance auto I got. Also any suggestions from anyone ..., A dirty throttle body is the most common cause of AC causing your car to shake. If this is the case, follow these instructions: Shut the car engine off. Pop the hood. Inspect the throttle body for dirty. Ask a friend to turn the car key to the "ON" position. Do not start the engine., Engine stalling at low speed and at stop signal. Asked by Robyn_pondering Apr 27, 2020 at 07:02 AM about the 2002 Hyundai Elantra GLS Sedan FWD. Question type: Maintenance & Repair. The car has been driving perfectly and then all of a sudden. I'm sitting in McDonald's drive-thru in drive but with the. brake on so the car just idling at less ..., 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., The reason your Hyundai Creta shakes at idle but smooths out when accelerating is that the engine is spinning faster, which smooths out any misfires. If a motor mount is causing the problem, once you put the car into gear, the torque from the engine will hold it against the frame. It can be very jarring when your Hyundai Creta shakes when idle., Elantra sputtering on acceleration and rough idle. So I hit the gas and the engine attempts to rev up, but ends up sputtering along till it catches again and whirls up. It happens in all gears when going past a certain point on the gas pedal. Thought it might be dirty spark plugs, so I changed them out., 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 ..., Hello all! My 2017 Hyundai Elantra has recently been having some issues! When driving, the whole engine will start shaking, causing the whole car to shake. While this happens, my car doesn’t want to accelerate. Here’s the video I got. I tried to get everything in there the best I could. , Find the most common driver-reported problems that are to blame when a 2020 Hyundai Elantra shakes when braking. See More 2020 Hyundai Elantra Problems Loose/Worn Suspension/Steering Components May Cause Wobble in Steering Wheel, Below are 5 reasons behind abnormal engine vibration. Worn out or Faulty Spark Plugs. A worn out or faulty spark plug is a leading cause why your car engine vibrates or shakes uncontrollably. A worn out spark plug can prevent the fuel-air mixture to not get properly ignited in the cylinders, thus leading to misfiring., Hyundai Models. Elantra & Lantra Forums. XD (2001-2006) Elantra. Shake During Idle Or In Front Of Red Light. Jump to Latest Follow 2K views 3 ..., Sep 10, 2022 · 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. , Jul 2, 2020 · July 2, 2020 by Jason. A sputtering engine can indicate a number of problems. If your Hyundai Elantra has a sputter, it is most likely going to be caused by bad fuel system, ignition system, MAF sensor, or bad catalytic converter. Your Elantra’s engine is a giant pump. It pulls in air (where it is measured by the mass airflow sensor). , 2022 Hyundai Elantra. The most common reasons a 2022 Hyundai Elantra ac isn't working are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. 0 %. 37 % of the time it's the. AC Refrigerant Leak., Sep 12, 2021 · HYUNDAI DASH VIBRATES, ENGINE VIBRATIONS FIX HYUNDAI SONATA ELANTRA ACCENT VELOSTER SANTA FE TUCSONIf you have Hyundai and you have engine vibrations / the d... , I can be sitting at the light and I start to see the rpm's go from 600-700, then drops to 500. The moment it hits 500, I feel the engine shake the cabin and the rpm goes back up to 600-700. The motor was replaced in August due to 'ticking' sound coming from the engine. Hyundai claimed it was 'engine' failure., 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., The idle on my sister's '02 seems to be kinda low... and it shakes some at idle. The tach sits just above the line below 1k... I assume that would be ~500rpm. Is the idle lower than normal, and if so... how would that be adjusted. quick recent history of the car: - replaced a stuck..., 2013 Elantra GT 1.8 from cold start would rev to 2000 rpm and within 20-30 seconds slow to 1400. Once warmed would idle very smooth at 700 rpm. 2016 Elantra sedan 1.8 from cold would rev to 1600 rpm and quickly slow to 1100. Then idle very smooth at 700 rpm. Neither vehicle ever had a rough idle., I have a 2011 Hyundai Elantra with about 120K miles on it. For the last several weeks, it's been shaking/vibrating whenever I'm at a stoplight for more than 30 seconds or so. Sometimes it happens when backing out of a parking spot. Also, the battery light sometimes flickers on and off while this is happening. (No check engine light.), The Elantra's shaking issue is almost certainly normal 4-banger harmonics, made worse at random times by the smart alternator going into charging mode at idle (which it normally tries to avoid). There is no "cure" for this aside from avoiding electrical loads and red lights.