Sonata I45 (YF - 2011+) :: Cylinder Misfiring Causing Bad Vibration And Check Engine Light


Aug 2, 2015

While driving up a long hill on the highway, one of the cylinders quit firing causing a bad engine vibration and check engine light. I turned around and drove home, pulled the plugs, and found the plug closest to the passenger side had bridged. I'm not sure why; it almost looked like it melted or had some sort of physical damage. This was on a 2013 Sonata Limited 2.0t with 45000 km / 28500 miles.

Pictures here: Spark plug failure - Album on Imgur

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i have a 2008 santa fe with a 2.7 61,000 miles 2nd owner ,out of warranty. It started missing and the check engine light came on. I took it to a local parts store who put an analyzer on it an it showed the #3 spark plug was misfiring. I am hoping its the plug. I do my own work but havn`t been able to find a correct sequence to replace the plugs.

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Ford - Taurus :: Check Engine Light Keep Flashing - Code PO302 Cylinder 2 Misfiring

I have a 1996 ford taurus lx v6 3.0 dohm..my check engine light flashing. then it stop flashing..i did replace spark plug,wires,coil pack..when it start to flash i put it gear the car start to shake and sputter.i really don't know why its doing that the car has about 150000 miles on it..i do get a code p0302 Cylinder #2 Misfire..the new plugs and wires and coil pack is about 2 weeks old..

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Accent MC (2006-11) :: Cylinder 2 And 4 Misfiring Causing Car To Shake While Idling Or Speeding Up

Recently my car, after I put fuel into my car, my car won't start unless I apply the gas and then shift it into gear. I thought that perhaps replacing my spark plugs would fix this problem since it is about time for a tune up on my 2010 Hyundai Accent. About a week after changing the spark plugs I now have an error code that states that Cylinder 2 and 4 are misfiring and it is causing my car to shake while it is idling or speeding up. Also it is much slower than before to get it started from a stopped position.

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Sonata I45 (LF 2015+) :: Hard Braking Causing Engine Vibration / Buzz

I've been noticing that when I need to make a hard stop, I will feel a sudden engine vibration for about 1 second as soon as it comes to a complete stop. The same feeling you might get when the RPM drops too low. It only does it for like 1 second though. I am not sure if it is the gears shifting down that is causing this. I won't feel it if I am making a gradual slow stop. Only fast sudden stops.

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Sonata I45 (YF - 2011+) :: Check Engine Warning Light Came On

My 'check engine' warning light just came on after only 12,000 km on my 2011 GLS. What emission control part would be the first to fail? I ran my 06 Sonata 100,000 km+ and never saw any warning lights! And no, it's not a loose gas cap!

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Sonata I45 (YF - 2011+) :: New Battery And Check Engine Light Is On

Got a new battery today but now the check engine light is on. Went to local auto parts store and was told it's the MAP sensor. I had the battery replaced 3 years prior to this and at that time the check engine light didn't turn on. Is that normal?

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Sonata I45 (YF - 2011+) :: Intermittent Check Engine Light

Check engine light on and off. Code shows turbo boost throttle position sensor is the problem. I can't find a part with that name.

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Sonata I45 (YF - 2011+) :: Check Engine Light Flashed And Stayed On Until Lay Off The Gas

I got a 2013 Turbo. This morning I gave it 90% throttle and I got shaking, check Engine light flashed on and stayed on until I layed off the gas. It drives fine under regular throttle, but for ie. Passing someone on the highway.. Yeah ain't happening, idk if it just won't downshift, or the turbo is acting up.

I have an Injen intake and Had it installed since day one or two of ownership. Bought the car brand new, it has 43k miles, and I usually give it WOT a few times a day ()

But it's weird how all of a sudden it's doing this, I tried restarting the car, leaving it to rest for a while and same result. I personally think it's the tranny not being able to downshift, even holding a gear at high RPM, it shakes. Turbo sounds like it's working fine but who knows what's going on under the hood.

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Sonata I45 (YF - 2011+) :: Check Engine Light Code P0449

4 years ago, I also had a check engine light. I brought the car to a mechanic and he just cleaned the parts and the engine light went away. I was still under warranty then. Below is my original post:

Removing Canister Close Valve and Fuel Filter

Today, I have a P0449 code. Something is clogged again. I am now out of warranty because the Canadian emissions warranty isn't as good as the ones in the US. The gas pump keeps shutting off when I pour gas.

What the most likely culprit is? I may try to replace the part myself if is easy enough.

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Sonata I45 (YF - 2011+) :: Check Engine Light On (Fault P0741)

I driving 2011 Sonata. Check engine light was ON while driving, which are fault P0741, TORQUE CON CLUTH ABNORMAL. The light sometimes ON, and sometime will OFF while driving, is it any problem?

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Sonata I45 (YF - 2011+) :: Engine Check Light Code, P0711 / Transmission Shift Occasionally

I own a 2013 Hyundai Sonata. Two months ago I realized that my transmission shift occasionally while I am driving, especially when the weather is cold and I park my vehicle for more than one day. Then my engine check light came, after two days it went off. I went to the dealership and ask for a multi-point inspection (without telling the inspector the transmission problem), they recommend a transmission fluid flush, then I went to an auto part shop to ask for reading engine check light code, they see P0711. After researches online, I understand this code is about transmission fluid or transmission fluid sensor defect.

My question is that, would a dirty transmission fluid cause the P0711 code, as some people stated online ?

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Sonata I45 (YF - 2011+) :: Check Engine Light - Fuel Door Constantly Pops Open By Itself

I own a 2011 Hyundai Sonata GLS with 20k+ miles on it. Purchased it about a week ago & had no issues until about now. About an hour ago, my check engine light came on & air from the driver side right vent started blowing even though the fan is off. What the issue might be? Also, my fuel door constantly pops open by itself. While driving, when I close my doors, and when I close my trunk it always pops open. Is there any way to fix this type of issue?

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Nissan - Altima :: Misfiring Cylinder While Driving And Engine Light Came On

I have a 4 cylinder, 2002 Nissan Altima with about 170,000 miles on it. About 2 months ago, the car starting misfiring while driving and the engine light came on. I went to autozone, used their diagnostic tool and it said I needed to replace the fourth cylinder's ignition coil. I ended up just replacing the spark plugs at that point. After replacing the spark plugs, the misfiring seemed to stop, but the check engine light was still on although the car ran great in comparison.

Then, about 2 weeks ago, the car started smelling like gas and slightly misfiring again. I bought set of ignition coils and changed them out. I started it up, the car seemed to work great. I went to the store about an hour later and the car worked better all the way there with no problems. Then, as I was about to leave the store, I started the car up and it started sputtering and misfiring and you could visibly see the engine shaking like crazy when I popped the hood. It stopped shaking, evened itself out, after about a minute. Then, I felt the top each of the coils and the first three were fine, but the fourth had a rapid tapping coming from it that was obviously not right.

I gave it a couple of days, but the car didn't stop smelling like gas or misfiring when starting up, so I pulled out the ignition coils and the spark plugs. The fourth spark plug was brown and burnt from the bottom to the halfway point, unlike the other still-clean spark plugs. My first hopeful thought was, maybe it wasn't tight enough and that was letting gas or oil inside to burn. I tightened it up, put everything back and it seemed to be alright, even the tapping from the coil stopped.

However, within the last couple days, the car has been smelling like gas and feels like it sputters and misfires once I start it up. The misfiring seems to stop after I rev the engine a little bit, but sometimes when I'm idling, you can still smell the gas and sometimes audibly hear a sputtering.

So my question is: what the hell could be wrong? Faulty wires, a stuck valve, bad compression, what? Remember, the fourth cylinder's spark plug was only burnt on the bottom half if that's useful.

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Accent LC (2000-05) :: AC Causing Sputtering / Backfire And Check Engine Light

2001 GL 1.5 Litre. Car occasionally hesitates a little with AC off, but runs pretty well. But with the air conditioner on?

Stalls about 50% of time when backing with A/C on. From stoplights, sputters all the way through intersections with A/C on, sometimes backfires. On a few occasions, the Check Engine light will blink on and off while it's doing this. After it gains a little speed/rpm, though, it's all good again, light goes back off.

Had full tune-up just before we bought it 4,000 miles ago. Air filter clean. Not sensors, because the CEL goes back off by itself. What the heck? How could the A/C cause a backfire?

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Dodge - Neon :: 1997 - Check Engine Light Has Been On And Causing Random Misfire

I have a 1997 Dodge Neon with about 153,XXX miles on it. My check engine light has been on and i know that is caused by a random misfire. But more recently i went to start my car and it started but ran for less then 10 seconds and died. I tried to start it again and it wanted to but wouldnt make the final step i guess. We checked my spark plugs and i had oil sitting in 3 of the 4 there are. We have tried starting it again after cleaning the oil out and it started on the first try, I am just afraid of messing anything else up so until we figure out why it did this to begin with the vehicle is off limits. My Fiance said we need to replace the spark plugs and a gasket.

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Santa FE SM (2001-06) :: Transmission Started Going Into Limp Mode And Causing Check Engine Light To Come On

2002 Santa Fe, 2.7 AWD

The transmission has started going into limp mode and causing the check engine light to come on.
The codes given are p0750 and.... I think p0751, for shift solenoids C and D. There is also the generic Transmission Control Module code.
Limp mode only occurs at higher speeds although shifting feels a little rough at times in lower speeds.
If operated in manual mode the vehicle can be driven normally at all speeds without going into limp mode.

Fluid levels are fine.

With limp mode occurring in automatic but not occurring in manual mode, is it more reasonable to believe the solenoids are malfunctioning or the control module itself? I'm inclined to replace the solenoids but find it odd that the vehicle operates normally in manual. Also, can the solenoids be replaced without removing the transmission? It looks like I could get the pan off but am unsure if there is room to get the work done once it is removed.

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Golf IV / Jetta IV :: Overfilling Trans Causing Hard Shifts - Check Engine Light Came On

Will overfilling transmission fluid cause hard shifts? I used ~4.3 quarts to refill. How much should I drain out? My check engine light came on.

Basically, I am having hard shifts from 2-3 and 3-4 in tip mode and auto. more tip mode tho.

-I did a complete solenoid change b/c of cold start problem with n92 solenoid.

Fixed the cold start shifting out of first.

-Did a trans fluid change with Mercon V ATF Fluid works fine.

-Just changed oil on 4th of July last week.

Yesterday my check engine light came on. It's been about 500 miles since the solenoid change/trans fluid change, and 100 miles since the oil change.

Now my Mk4 is having this obnoxious shifting. I am thinking I possibly added too much trans fluid into my system as I do not have the VAGcom tool.

I drained out (bone dry drain till no more dripping from check/drain plug), roughly 4 quarts. I added 4.3 give or take 0.1 quarts back into the car.

Now I'm worried because everywhere I'm reading says anywhere from as little as 2.1 quarts to 3.5 quarts.

Should I drain out 0.5 quarts (because I know theres over 4 in there now) to make it 3.5 quarts?

Or should I just redrain the whole thing and start by measure one quart at a time?

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Kia - Rio :: 2009 - Misfiring And Flashing Check Engine Light

Yesterday out of no where my rio started to misfire so i immediately took it into autozone to have it checked. when doing so the check engine light was on, but solid.

The tests came back with P0300, P0301, and P0302 or 3. I cant find the papers, but its 3 cyns that are misfiring. The guy at autozone suggested i try changing out the plugs first since its cheaper and has been known to fix this issue.

The second I bought the plugs I went home and changed them out. once finished i started up the car and not only was the car still misfiring, but the check engine light is now flashing... I did notice one thing when changing the plugs.

If facing the engine the second coil from the left had a bit of what looked to be rust. i was able to wipe it off with ease. What my next move should be?

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