Hyundai elantra shaking at idle

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 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.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 2017 Hyundai Elantra sport's engine.Your 2017 Elantra's ignition depends on this order for best performance. If the cylinders light up in the wrong order, you might notice your engine sputtering, shaking while idling, and it could even get damaged. Knowing this firing order helps you figure out and fix ignition issues, keeping your Elantra running well for a long time.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 ...I haven't experienced the shake recently, the car has 8K miles now. It may have broken-in, or maybe just a coincidence - time will tell. It's way too intermittent to take her for service. I also experience some "chugging" of the tachometer in idle, but no perceivable engine roughness or hesitation. Other people have the idle rpm chugging too.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.101,595. KenF answered 6 years ago. If you're stopped then the only thing that can cause you to feel a vibration is engine/tranny related. You can check on a Hyundai forum and see if this is a common issue, or if other drivers know of any TSBs on it. In the meantime you can check if your engine is running okay and not misfiring, or that all ...

My 1998 Hyundai Elantra 1.8L idles very high at startup. The colder it is outside the higher it idles. It does not have a tachometer but sounds like it is idling around 2500 to 3000 RPMs. Once it warms up, the idle will return to normal but sometimes I have to cut the air conditioner on to force the idle down to normal.First off thanks I'm advance for any help but recently my 2012 accent (auto) is shuddering/vibrating the entire car at idle. It's somewhat jerky when shifting and is revving higher then usual. ( as in 2,400 rpm to stay at 60 rather then its usual 1,800 rpm.) Haven't really done anything yet as I wasn't sure what to look for first.Other tire issues can cause shaking. Low tire pressure: Not having enough air in your tires can cause shaking. Low pressure will also cause rapid, uneven tire wear, and may ultimately result in a blowout. Solution: Make sure that your tires are properly inflated before you do anything else. This may solve the problem.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 ...Rough idle, check engine light. P304 code....changed sparks and got another p304 code. I moved the ignition coil from cylinder 4 to 3....then I got p303. Is safe to say ignition coil is the issue ... (2001 Hyundai Elantra) and it started shaking and felt like it was going to stall.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 ...The 2005 Hyundai Sonata has 8 problems reported for excessive vibration when idling. Average repair cost is $540 at 36,350 miles.

2 posts · Joined 2022. #1 · Jul 28, 2022. 2015 Hyundai Elantra SE 1.8L Automatic Trans 113,000 miles. Car has started stalling when coming to a stop or slowing down. If I shift into nuetral and keep the engine reved it doesn't die. It also sometimes doesn't want to start, takes like 3 tries. first time it just cranks, second time starts ...Shakes during idle that smooth out while driving can be caused by something as simple as bad motor mounts. It can also point to fouled spark plugs, worn belts and hoses, or a defective idle speed control system. Finally, you need to examine the fuel intake system to see if that's to blame. 1. Bad Motor Mounts.948 posts · Joined 2011. #3 · Aug 17, 2011. The 2.4 does have noticeable vibration when idling if you look under the hood. However the engine mounts are designed to isolate the vibration from the car so very little gets into the passenger compartment. If you look at the upper mount you'll see it is very large and has a damping weight.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.

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The most common reasons a 2015 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.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 ... If the front or rear motor mount is weak/bad the vehicle will have a noticeable vibration at idle that seems to disappear when driving. The rear mount I am speaking of is underneath, middle of the car, and runs from the sub-frame to a bracket on the engine block. Just had to change one of these on an Elantra w/ 4cyl and was amazed at the ...Find the most common driver-reported problems that are to blame when a 2006 Hyundai Elantra shakes when braking. See More 2006 Hyundai Elantra Problems Loose/Worn Suspension/Steering Components May Cause Wobble in Steering WheelI bought my Hyundai from Honda a year or two ago, used. The car has run perfect up until recently. Now it sputters when idle. The RPMs jump up and down and the car has a very noticeable stutter. I took a video here of the RPMs dropping while sitting still but you can't notice the stuttering because of the iPhones image stabilization I assume.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 .

They say rules are made to be broken, but you have to understand the rules before you can break them effectively. Cocktailing has a lot of rules, and a lot of rule breakers, but St...Answer: No, motor mounts usually vibrate during acceleration or at idle. I recommend taking a look at the struts, inspect them for leaks and do a bounce test, if all is ok, inspect the from the end for any loose or worn ball joints or steering linkage. ... Question: My 2015 Hyundai Elantra has a very bad shake/vibration. We just changed the ... 2017 Hyundai Elantra shaking when idling and low speed. Elantra. I’ve been having some problems lately with my Hyundai, I purchased it from the dealership used and have had it about 3 years. No issues until now, but I am at 109k! Recently I started noticing a strong shake and slight sputter but only when I’m stopped or going really slow. The first step to solve chatter or jitter is to inspect all of the components for damage. Have the flywheel checked for warp, and resurface or replace it if needed. If oil or grease is present, find the source and fix the leak. If a clutch disc has been covered in oil, it should be replaced. Make sure that all of the components are clean before ...TOP 5 REASONS FOR ROUGH IDLE ON HYUNDAI SANTA FE TUCSON ELANTRA VELOSTER ACCENT SONATAIf you have Hyundai and you have rough idle or engine revving up on Hyu...Interesting about this " vibration ". This morning , I was idling in Park, air off, the car started vibrating, maybe a rough idle is a better description,the tachometer showed 500 r.p.m. I had just driven about 25 highway miles and the car had been running on city streets for about another 3 miles,before this took place.Idle Control Speed Actuator. ... 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 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 ...Two weeks ago I purchased a 2016 Elantra SE, 103k miles, for my son. Test drove for 50 miles just fine, I felt a slight vibration at stop lights (AC was on) so I pulled over to investigate. The air filter is filthy so I assumed that is contributing to the vibration issue. It has been parked for two weeks but got it insured and drove it today...On April 30, HYUNDAI STEEL presents Q1 figures.Wall Street analysts expect HYUNDAI STEEL will report earnings per share of KRW 1227.59.Track HYUND... On April 30, HYUNDAI STEEL wil...There are plenty of occasions where you might find your car idling. In a long drive through, picking someone up from work, or just sitting in your driveway. If you're idling longer...

Here is a more detailed list of the seven most common reasons why a car vibrates when stopped or at idle. 1. Worn Spark Plugs. One of the most common reasons for a rough idle is worn or damaged spark plugs. If you have worn spark plugs, your engine might misfire, which causes shaking or vibrations. If you have a faulty spark plug, you should ...

Shakes When Idle But Smooths Out When Accelerating. The reason your Hyundai Equus 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 ...You may feel the vibration through the steering wheel, seat, or in the brake pedal. There are numerous reasons why your vehicle is shaking, and we're naming the top 10. 1. Engine. Several parts within a car's engine could cause a vehicle to shake if they malfunction. These include the engine air filter and spark plugs.Find the most common driver-reported problems that are to blame when a 2012 Hyundai Elantra shakes when braking. See More 2012 Hyundai Elantra Problems Loose/Worn Suspension/Steering Components May Cause Wobble in Steering WheelLikely injectors as said above or the high pressure fuel pump. Take off the plastic engine cover and look at the top right of the valve cover. You should see a round, goldish colored part with fuel lines going to it. Put your hand on it and see if the vibrations you feel match up with the noise you hear. If so, it is just normal and a trade-off ...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.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.The N Vision 74 concept, inspired by the Hyundai N 2025 Vision Gran Turismo and 1974 Hyundai Pony Coupe concept, is a high-performance hydrogen fuel cell hybrid model. Hyundai said...About two - three weeks ago I noticed my Elantra would emit a light vibration / shake when stopped, but still in drive. About 5 days ago, when I started my car, it sputtered and shook, then stalled. I restarted it and it sputtered and shook and I turned it off. I restarted it and it had a rough idle for about 2-3 seconds, then it smoothed out ...

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my car has an annoying (non-related) vibration at idle RPM (800, or 1000 with the AC on), which i could get rid of by reving the engine an extra 150-200RPMs.. ... A forum community dedicated to all Hyundai models owners and enthusiasts. Come join the discussion about modifications, classifieds, troubleshooting, maintenance, reviews, and more ... In many vehicles a common cause of engine vibration is worn out or faulty sparkplugs. Worn out or dirty sparkplugs will cause the2017 Hyundai Elantra gts 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. Car Service Estimate Shop/Dealer Price; 2000 Hyundai Elantra L4-2.0L: Service type Engine is shaking, pulsating or vibrating Inspection: Estimate $114.99: Shop/Dealer Price $124.99 - $132.49: 2015 Hyundai Elantra L4-2.0L: Service type Engine is shaking, pulsating or vibrating Inspection: Estimate $94.99: Shop/Dealer Price $105.01 - $112.52: 2007 Hyundai Elantra L4-2.0L: Service type Engine is ...109 posts · Joined 2008. #1 · May 24, 2008. Hey, I fixed my High Idle today, I was doing some other work on the car and as I've been reading a lot around here, I've been seeing other Idles being around 750 -1000. Mine has been at around 1500, always bothered me. So I finally decided to look into it and found that the little pin that holds the ...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.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.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... 2013 Hyundai Elantra GT runs rough on idle, jolts and studders. Tags battery electrical issue idles rough studders terminal. Jump to Latest Follow ... My car seems to run rough on idle, (in drive but not going anywhere). It seems like the car is vibrating more than it should. Sometimes it will even jolt or studder like it's trying to go forward ... ….

Jul 28, 2020 · 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 ... 2017 Elantra idle drops when braking. Hey Scotty I have a 2017 Hyundai Elantra 2.0L with 127k miles.After the car warms (doesn't do it when cold) up if I'm at a stop light and I'm holding the brakes the Rpms drop a good bit and I can feel more vibration that normal through my seat.and if I go to accelerate before the rpms go back up the ...Motor mounts or spark plugs could cause this symptom. Could be the idle air control valve! Elantras have been notorious for misfires. Take it to the dealer, there is actually an ECM update for your car, for that exact concern. So my 2016 Elantra is shaking when Idle. The car has 38,000 miles on it.Hi all! I have a 2017 Elantra that I leased for 36 months and then bought brand new in late 2016. I am currently at 39,810 miles. 4 months ago, I got on the highway and my car was having trouble accelerating - hitting almost 7 rpm. The check engine light came on, the car shook violently. I immediaAsked by Jose Dec 21, 2017 at 07:17 PM about the 2006 Hyundai Elantra Limited Sedan FWD. Question type: Maintenance & Repair. ... If it is smooth and not shaking while idling and revs up smoothly I don't think it has to do with the engine. 3 people found this helpful. Mark helpful. Your Answer: Upload Photo. Photo (optional) Related Questions.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 ... At around 54k miles, the car had started shaking at idle (and by shaking I don't mean the normal vibrations I mean shaking the whole car noticably). It would also slowly increase the RPMs at idle, shake and drop back down At first it was just that, and then the issues with acceleration and shifting into higher gears to get up to speed.2021 Hyundai Elantra Shaking When Braking? RepairPal will help you figure out whether it's your Brake Rotors, Brake Pads, Wheel Bearing, or something else. ... Hyundai Elantra Rough Idle; Hyundai Elantra Windshield Wipers Not Working; Hyundai Elantra Overheating; Hyundai Elantra Rattling Noise; Related Model Symptoms.HYUNDAI DASH VIBRATES, ENGINE VIBRATIONS FIX HYUNDAI SONATA ELANTRA ACCENT VELOSTER SANTA FE TUCSONIf you have Hyundai and you have engine vibrations / the d... Hyundai elantra shaking at idle, 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., 2005 Elantra rough idle/ heavy vibration Jump to Latest Follow 4K views 3 replies 3 participants last post by grcauto Mar 8, 2020, I took a video of the engine vibration. you can see that everything's vibrating in the engine bay. In real its even worse, you cant see it in the video. The RPM stays at this position with the AC on or off. The boost gauge reads -20 with the AC off and between -10 and -15 with the AC on., Advice on 2013 hyundai elantra, changed spark plugs last night and seemed to run fine, but on the drive to work this morning me and my SO noticed the car to be shaking quite a bit even at stop lights, if you guys can please help me out, thanks. Archived post. New comments cannot be posted and votes cannot be cast., 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 ..., Usually a bad or failing idle control valve will produce a few symptoms that can alert the driver of a potential issue. 1. Irregular idle speed. One of the most common symptoms commonly associated with a problematic idle air control valve is irregular idle speed. The idle air control valve is programmed to regulate and maintain the engine idle ..., 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., 2 Possible solutions for starting problems in the Hyundai Elantra. 2.1 Checking and replacing a faulty ignition switch if necessary. 2.2 Regular maintenance of the fuel system, including cleaning or replacing filters. 2.3 Proper battery maintenance, ensuring good connections and charging regularly., My elantra shakes when idle, not always but it has been getting more frequent. I haven't noticed any leaking, I'll - Answered by a verified Hyundai Mechanic ... My daughter has a 2017 Hyundai Elantra,the car started shaking and the rom needle will not go below 1000 and the check engine light comes on intermittently ..., 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., 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., I have a 2000 Elantra that has about 140000 miles on it. It has been running very good until about a day ago while driving, a loud clacking noise happened. I was able to find a parking lot to park the car and listen to it at idle. The noise is a VERY LOUD clacking noise that seems to be originating in the engine. It has the following symptoms: 1., 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 ..., ELANTRA steering wheel pulls back and forth. 2002 Elantra steering vibration. Steering wheel vibration Hyundai tucson. Wobble in car. 2004 Sonata with excess vibration in steering wheel. Elantra 2000 steering vibration. Shaking steering wheel on 1999 Elantra. 2002 Elantra with 180,000 km highway driving... Here's the problem but my dealer and ..., Office of Defects Investigation is Currently Looking Into Potential Engine Fires in the 2013 Elantra. With 956 complaints, three recalls, and three investigations, two of which are still open, the 2013 Hyundai Elantra leads the list for the most troubled model year. The most alarming item here is an open investigation for potential engine fires. ..., Office of Defects Investigation is Currently Looking Into Potential Engine Fires in the 2013 Elantra. With 956 complaints, three recalls, and three investigations, two of which are still open, the 2013 Hyundai Elantra leads the list for the most troubled model year. The most alarming item here is an open investigation for potential engine fires. ..., I have Hyundai Elantra 2015 ODO 227000km the iuss is when I stop car on single my car make vibration with A/C on. with A/C off my car ... Guru934CQ answered 6 years ago Most 4 cylinder cars vibrate a little at idle with a/c on. It is normal. To reset the cars computer you can remove the negative car battery wire for 15 seconds, then reattach it ..., The firing order of your 2017 Hyundai Elantra is 1-3-4-2. This is important as it ensures your car runs smoothly and uses fuel efficiently. Cylinder number one is found near the front cover of the engine. If you notice your spark plugs wearing out or your car using more fuel, it might be time for a service., Random loss of acceleration/dying at stop signs. Hey All! Not new to forums, but new to Hyundais. Anyways, my g/f has a 2003 Elantra with a 2.0. Recently we replaced the fuel filter, charcoal canister and whatnot to fix the problem of not being able to fill it up without the pump clicking and turning off. Now that works great!, 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 ..., 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., Hi all! I have a 2017 Elantra that I leased for 36 months and then bought brand new in late 2016. I am currently at 39,810 miles. 4 months ago, I got on the highway and my car was having trouble accelerating - hitting almost 7 rpm. The check engine light came on, the car shook violently. I immedia, The reason your Hyundai Genesis 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 Genesis shakes when idle., My 2011 Elantra has a slightly rough idle at stop lights. It doesn't happen ever time, and some people probably wouldn't even notice it, but at every few/several stops it idles a bit rough. ... I've noticed an occasional shaking at idle too... more than I would expect from a small 4-banger. ... Hyundai cars from the Sonata to the Elantra and ..., 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., Sudden Rough Idle (When in Gear) New member here, bought a 2019 SF Ultimate 2.0T this summer. Currently has 7300 Kms on it. Driving yesterday (-25°C) my SF started making a slight shudder/ vibration and sounded like the engine was lugging a bit when I came to a stop. Putting it in neutral it smoothed out and sounded normal, but I now have this ..., 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 ..., Allow the engine to idle for 10 minutes. 4. Turn the engine off. Wait 10 seconds (for the PCM relay to de-energize). Restart the engine and confirm the engine does not surge when the A/C is turned on. If it still surges, repeat steps 1-3. 5. Finally, drive the vehicle with the A/C on. The engine should not surge when the A/C compressor engages., My 2011 Elantra is shaking rough occasionally while idling with the a/c on - Answered by a verified Hyundai Mechanic ... 2011 Hyundai elantra ltd. P0016 issue started back in December. brought in vehicle, said OCV clogged, ... hello, i have a 01 elantra and it idles rough, ..., 30 years of experience. Hi Elizabeth. Thanks for contacting us tonight. Black transmission fluid is an indication of an overheating problem inside the transmission case. This can be caused by a damaged transmission cooling system, obstruction of debris inside the transmission hydraulic lines or even an inner seal leak., 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., 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., 2 Possible solutions for starting problems in the Hyundai Elantra. 2.1 Checking and replacing a faulty ignition switch if necessary. 2.2 Regular maintenance of the fuel system, including cleaning or replacing filters. 2.3 Proper battery maintenance, ensuring good connections and charging regularly.