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Me Too!!!!!! — a reply:
I've been searching these forums and elsewhere for 5 years looking for someone who has found a solution to what sounds like the same problem. Some of my passengers have compared the noise to the Autotopia cars that are at Disneyland. In any event, I'm surprised to hear that five model years later, the same problem exists (but seemingly for a small minority of us).
With respect to my 2001 Elantra, it too started exhibiting a change in engine noise within the first 300 miles. I probably have qualified for lemon law because the car has been in the shop at least a dozen times for an average of three days at a time since I purchased the car new in August '01. I even got corporate involved at one point and they replaced the motor mounts (probably a good thing, but it didn't help). At another point I took it to an independent mechanic who listened to the engine noise and suggested that it might be valve related. I then took my car to a different dealer (than the one from whom I purchased). A mechanic at the new dealership also pinned it on the valves, but the corporate rep came the next day and released the car back to me saying that they didn't find any problem with the valves following their inspection (the valves are apparently pre-set by shims on the 2001 model year). Later, at the suggestion of the Hyundai customer service department at corporate, I even had my exhaust manifold checked after learning that there is a voluntary recall campaign. Yet I am told that my car's exhaust manifold does not need replacement. (If the exhaust manifold was to crack, I have no idea what sort of sound it would make, and how it might compare to what I am about to describe. Can someone fill me in on that? I'm thinking about having the exhaust manifold checked again.)
What I hear: It sounds like frog-in-the-throat or tumbling gravel overlaying the normal engine sounds. Some have even compared the noise to the pelting sound of large raindrops falling rapidly on the hood. From the driver's seat, it seems to originate from somewhere right of midline under the hood. Usually it happens during the first drive of the day, but other times it does not. In the coldest weather I can hear it a bit at startup, but after I leave my driveway the noise is only evident when I accelerate and NOT while waiting at a stop. I hear it from 0-40 mph, and it seems to speed up in tandem with the idle, until about 40mph when engine noise drowns it out.
The noise always presents itself on subsequent drives providing that the car has been sitting in relatively cool temps for ~4 hours (cool ambient temps being anything below about 74 degrees). In the hotter weather of the summer it is quieter or even seemingly absent in the day, but regardless of the season it always seems more pronounced at night. I feel that the problem is more noticeable at night because of the heavy condensation that is present in my area after dark. Perhaps the weather-related observations are related to the degree to which the offending parts expand and contract?
Over the past five years the noise has grown louder and I no longer have trouble getting the techs to hear it. Even passengers have commented. It fades out as the engine reaches operating temps. Depending on the outdoor temps and when the car was last driven, the noise persists from as little as 3 minutes to as long as 15 minutes.
In addition to what you mentioned, I read that a weak oil pump can trigger valve train noise. But the dealer refuses to perform a leak-down test or any other such effort because there is no code in the computer to suggest a malfunction. The only "solution" I've encountered to what sounded like the same problem was somebody from Germany who wrote on this forum a year or two ago that replacing a faulty timing belt tensioner eliminated what sounded like slack that develops before the engine warms up. But my dealer has explained that they can't go on a hunting expedition in effort to troubleshoot this problem because if they pull parts that are later determined to be fully functional, they don't get reimbursed for their labor costs by corporate (my car has low miles and is still under full warranty). In fact, I actually have a message on my voicemail from the service manager following my last repair attempt saying that "until something breaks" I should just continue to enjoy and drive the car. So the problem continues, yet I never see a check engine light. Even so, I don't think this is normal because when I've posted here and elsewhere over the past few years I don't get a lot of "me too" replies.
Yet another mystery is a thumping sound from the rear brake area while at a stop. If my foot isn't firmly planted on the brake, I sometimes hear what sounds like what I imagine it would sound like if someone were trapped in the trunk and banging their fist on the floor to get out. I am assuming that the ABS is grabbing, but the dealer hasn't even ventured an educated guess. Some have pointed out that this happens with drum brakes, but this observation doesn't apply to me because the ABS-equipped model has 4 wheel disc brakes.
Does any of this ring true for you or anyone else reading this?
It is a pretty distinct sound. I say that it sounds kind of like a "helicopter under the hood" - or a "put put put" sound. If you suspect this is your problem, you could always take it to a muffler specialist (such as Meineke) to have them inspect it (assuming your dealer is telling you it is fine, but you want a second opinion).
What happens is that water gets past the boot on the end of the e-brake cable. If it is salty water from road salt, the cable rusts from the inside. Lubing the cable at the boot could provide temporary relief, but your cable really needs to be replaced.
w9cw and newsview: 1racefan describes the cracked manifold pretty well. When it first cracks, it sounds like a ticking and grows louder with time. When the manifold on my Escort cracked, it made the most noise when cold (like your car) and sometimes made the noise and sometimes not (like your car) and got worse with time (like your car). There was a symptom you haven't mentioned, though: when it was making the most noise, there would be an oily or rich burning exhaust smell under the hood.
All through this no noise and no noticeable smells from the exhaust.
FWIW I never knew about the TSB on the exhaust manifolds and only found out about it from my mechanic when he went to look for a replacement. To Hyundais credit they replaced it free of charge no questions asked even though I was 30k miles past the warranty.
2011 Hyundai Sonata, 2014 BMW 428i convertible, 2015 Honda CTX700D
The timing belt drives one cam only. There is a tensioner, and it can make noise if the timing belt has not streched evenly. The tensioner will still work, but it is moving back and forth rapidly to take up the slack and can cause a slapping/clacking sort of noise.
The second cam is chain driven by the first. Upon start up, and before moving the car, you can get a lifter like noise coming from the drivers side end of the head. Generally goes away once the car is driven. While disconcerting, this particular dealer has not seen a failure related to this condition, and they sell and service a LOT of Elantras.
The CVVT engine does not display the same condition due to the difference in the operation of the valve train. I only put 42K miles on the '02 before I had to replace it with an auto, but I had zero engine problems.
The earlier answers on the cracked manifold are dead-on. The noise will first sound like a hard puff-puff or tick-tick sound, but as the crack widens it will get louder and louder until it is obvious you have a major exhaust leak.
The timing belt drives one cam only. There is a tensioner, and it can make noise if the timing belt has not stretched evenly. The tensioner will still work, but it is moving back and forth rapidly to take up the slack and can cause a slapping/clacking sort of noise.
The second cam is chain driven by the first. Upon start up, and before moving the car, you can get a lifter like noise coming from the drivers side end of the head. Generally goes away once the car is driven. While disconcerting, this particular dealer has not seen a failure related to this condition, and they sell and service a LOT of Elantras. "
Thanks for the tip, jlflemmons.
I asked a corporate "master tech" about this possibility about a year back and he said he had never heard of such an explanation. I find it hard to believe that Hyundai has no familiarity with my problem. If my experience puts me in the minority — meaning most other Elantra owners, even of the same model year, will not experience this — I wonder how come the dealer in your example still maintains that there will be no breakdown triggered by the anomaly? Isn't this more akin to a bad tooth? Yes, you can ignore it for awhile and it will continue to function, but if you do it will be a root canal (and a huge bill) later.
The only thing I will have after the warranty is up is a service history filled with identical complaints that are never resolved. Without the dealer pinpointing the cause while the car is still covered by the warranty, I don't know how the mere presence of the "symptoms" in my service history can be used to compel them to fix whatever results down the line from doing nothing "until something breaks" as my service manager advised. They can always argue that because they never decided on the culprit in the first place that whatever I am currently experiencing with the car — let's say a catastrophic engine malfunction in another five years — may have nothing to do with what I reported in the past.
Oh, and when I told the dealer that I was going to take my car to an independent mechanic to diagnose the problem, they suggested, in not so many words, that if they find any new problems with my vehicle after it has spent time at a non-authorized repair center they may deem that the independent mechanic has caused the problem, which implies that my warranty may be in jeopardy. In effect, if the the independent mechanic says the lifters are bad, and contradicts the corporate rep who says they are not, they may argue that the mere fact that I had someone in there inspecting the valves triggered the problem that I document and come back to have them fix under warranty.
My hands are tied!!!!!
I'm wondering if it is too late in California to file lemon law, or even if lemon law would apply to me since I continue to have a "reliable" car even though it has spent a lot of time in the shop.
I live in Orlando, FL, and own a 2005 Elantra GT hatchback. I am being asked to pay $250 for the 15K mile service. I have checked two Hyundai dealers, they're within $10 of each other.
Apparently, they sell 2 services, one for about $120, the other for the balance. The $120 is the "Hyundai recommended" one, the other one is "dealer recommended" for "Central Florida conditions", presumably weather-based.
Can anybody confirm whether this is standard operating practice nationwide, whether these prices are "reasonable", whether I should just spring for the basic service and call it a day, or what.
Any input appreciated.
Sorry if this belongs on the "prices paid" board.
Thanks in advance.
Gomoku
What are some of the extra "Central Florida" services that they recommend at 15,000 miles? One to watch out for is "throttle body cleaning." That isn't necessary and in fact Hyundai even recommends against it.
15K service is usually an oil change, external belt check, fluid top off, check the brakes, and that is about it. No emissions testing or other computer based work is performed, at least not in Texas.
It is unfortunate, but many dealers of all brands have started using these "inspections" to upsell services that may not be needed. On another forum there was a discussion over changing the high capacity air filter in a GM truck. The filter is huge, has an airflow restriction monitor, and in normal conditions can easily go 50K miles without replacement. Probably one of the best non-industrial air filtration systems I have ever seen on a vehicle. And yet, dealers and quicky oil change places will try to sell a replacement every 15K. It is all about profiting from those who do not read the owners manual.
Another GM dealer was pushing transmission service at 15K intervals. I pointed out to them that under high-temp, towing conditions, GM recommended 30K. And they were charging $169 for the fluid and filter change, a 30 minute job.
That dealer no longer has a GM franchise. Wonder why?
I somehow got the brilliant idea that it would help. So I decided that I would use some every 7500 miles. Well I passed 7500 last week and poured some stuff in (Chevron FI Cleaner). Seemed fine I guess.
About 3/4 of the tank goes by uneventfully, then the Check Engine Light went on (Doh!) I filled the tank, took it to AutoZone for a read on the light: P0172- running too rich- and the AutoZone guy suggests pulling the battery cable to try to reset the light.
So that's what I did. And the CEL went back out (whew!) So now I've gotten 130 miles out of the first quarter tank; that's usually almost a half tank for me. So now I'm wondering what all happened.
Was the code related to the cleaner? Was it just coincidence? Did the cleaner improve my mileage, or was it just because of the ECM reset? :confuse:
For the time being, the car is running better than ever, so I'm just gonna keep driving it. If my mileage is in fact improved, I'll be happy since that's been my biggest beef with the car. If it drops off in several thousand miles, though, the question becomes: Reset the ECM or add more FI cleaner?
2011 Hyundai Sonata, 2014 BMW 428i convertible, 2015 Honda CTX700D
2011 Hyundai Sonata, 2014 BMW 428i convertible, 2015 Honda CTX700D
2011 Hyundai Sonata, 2014 BMW 428i convertible, 2015 Honda CTX700D
I know lots of folks whine about the complexity of these control systems, but if you step back and look at the big picture they are really pretty cool. Imagine 30 years ago if you told someone you had a 2.0L engine that developed 130+ HP without a turbo/super, that would make 30+MPG at 70MPH in a five passenger car, have emissions so low you could run it in a closed garage (don't try this. even though the numbers support the non-lethal level of emissions, no reason to be stupid)and was durable enough to allow a 100K warranty.
You would have been laughed out of the room.
Generally speaking, if a solid state electronics device is going to fail, barring outside event like lightening, they will fail pretty quick. The standard for televisions has been that if they work without problem for the first 100hours of operation, they will GENERALLY be good for about 10 years.
dk
from syracuse, ny
Whether the CEL was due to the FI cleaner or just because the car was, in fact, running rich is hard to say. Whether the mpg improvement was cased by the FI cleaner or the CEL, who knows? But it got great mileage this tankful, hopeful a sign of things to come.
On the other hand, 15 miles after filling up, I got another CEL (assuming it's the gas cap leak, even though I know for sure it was not loose. What a pain in the @$$. :mad: )
Any ideas what might be amiss? I paid $1300 for a new clutch last August (it "shattered" from abuse according to the dealer; my son and wife admitted to having several hard shifts with it) and it is still under a one-year warranty. My son swears up and down that he no longer abuses the clutch, but I am thinking seriously about selling this car after it is repaired and getting him an old slushbox beater.
I have a 04 Elantra that has about 17k.
I just bought it a month ago from this private seller.
By the way, I noticed rattles from two different sources.
One from the rearview mirror, it would vibrate, when the road gets bumpy.
The other rattle of unknown source will appear, when I accelerate. It only appears when I hit around 1800 to 2000 rpm and It would disappear. What would this be?
Anyone experienced the same problem? :confuse:
P.S.: for the rearview mirror replacement, do I go any Hyundai dealer? would they take care of my problem without charges, although I didnt buy car from them?
You can test the clutch by running uphill in too high a gear, like 3rd or 4th when you should be in 2nd (lugging the engine). If it slips, your clutch has had it.
BTW the clutch was new last August, has maybe 4k miles on it.
Niels
Niels
I have a new Elantra GLS and note that the front seats ae asymetrical. The service dept says the outside bolsters are less supportive to allow owners to slip in and out more easily. I can feel this asymmetry when driving. Perhaps that is the noted problem. I'm thinking of having an inside bolster replace the existing outside bolster. we'll see.
It's also interesting that Hyundai would go to this level of detail on the seat design for an "econobox."