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Hyundai Elantra Transmission Questions



  • skybelouskybelou Posts: 2
    Has anyone else with a new 2007 automatic Hyundai Elantra experienced their car lugging while driving around 35 - 40 mph???
  • backybacky Twin CitiesPosts: 18,910
    If you are in fourth gear at 35, it could be lugging. What are the RPMs at that speed? I've found if I take my '04 Elantra AT below about 1400 RPMs, it starts lugging a bit unless I am coasting along on level ground or a downgrade. But the '07 may have different gearing, since it's more fuel efficient than the '04.
  • harlqnharlqn Posts: 18
    Mine does lug about that speed, but it's also at low RPM (I don't recall the number off-hand), so it's not unexpected. If I'm going to be going that speed for quite a distance, I force it to stay in 3rd (AT). Otherwise, I just increase the distance ahead of me so I can coast/accel/coast/accel
  • carsnakecarsnake Posts: 4
    Hi, I just bought a 2004 Elantra for my son and we noticed that when accelerating the cars RPMs will jump and the car would do a hesitation. The dealership where we bought the car from did some sort of computer adjustment so that the tranny can "relearn" itself. Still same problem. Does anyone recognize this annoyance?
  • doohickiedoohickie Posts: 949
    Although there is some adaptive learning involved (or so I hear), if the RPMs are jumping between gears it sounds like a tranny problem (assuming it's an AT). If it *is* an AT, know that ONLY SP-III AT fluid (available at Hyundai, Kia, Mitsubishi and maybe Chrystler dealers) should be used in the AT. If the AT was flushed with something else, this could be the start of a tranny breakdown. If you think maybe it has the wrong fluid, you might want to take it to a dealer and have them check it and, if necessary, flush it with SP-III to prevent real tranny damage.

    If it's a manual and the RPMs don't like to drop when the clutch is depressed, that is a known issue and if there isn't a software fix the dealer can do, I know of a simple modification to the Idle Air Control Valve that prevents the RPMs from hanging when you pull your foot off the gas. If your son has a MT you're interested in the mod, let me know. (It's basically making a restrictor plate for the IAC valve to keep it from holding the RPMs high. Hyundai does this because letting the RPMs drop too quickly hurts emissions.)
  • 1racefan1racefan Posts: 932
    "when accelerating the cars RPMs will jump and the car would do a hesitation."

    Assuming it is an automatic, isn't this the "shift flare" problem that a lot of Elantras have experienced? I think there is a TSB for this...I know mine had it. I think it was 2nd to 3rd gear shift where the RPMs would flare up. My '02 started doing this right after we bought it (new), and I had the TSB performed on it (which I think was a software adjustment). It got better, but still occasionally happens from time to time. I now have 92,000 miles on the car, and get the transmission fluid plushed every 30,000 miles.
  • carsnakecarsnake Posts: 4
    Thanks! Yes this is an automatic. I think that you are correct it does do this between 2nd and 3rd. Can you tell me what a TSB is? I am bringing the car back to the dealer that I bought the car from and I want to know what I am talking about.
  • 1racefan1racefan Posts: 932
    Here is the info for the TSB, per this (Edmunds) website...

    Bulletin# 0240001 from January 2002. NHTSA item # 628956

    Summary - Some vehicles may experience a 2-3 shift flare condition (engine speed increases during shift).

    Maybe doohickie can chime in, and show you how to look up on the "webtech" site, and see exactly what the dealer is supposed to do in order to correct this. Also, make a note that the TSB I am referencing is for 2002 models, but it sounds like this is the problem you are experiencing.

    Like I said earlier, my car started doing this right after I bought it (brand new), and we did have the TSB performed on it. The condtion pretty much went away, but it will still do it about once every 2-3 months, and I now have 92,000 miles on the car with the original transmission.

    P.S. - TSB = Technical Service Bulletin. These are issued by the manufacturer, and sent to dealers. They are essentially little bulletins the manufacturer sends to the dealer regarding problems that seem to be "commonly seen" in a particular model. In addition to notifying the dealer of the problem, they instruct the dealer how to fix it.

    I also used the abbreviation NHTSA in my post. This is the National Highway Traffic Safety Administration in case you were wondering.
  • carsnakecarsnake Posts: 4
    Thanks again! I found a tsb that was for the 2004 models. The bulletin I see is 0440012, sequence 10009779. It describes it as "Automatic transaxle harsh and/or delayed shifts. to include 2005 elantra". So basically, I can bring this car to my local dealership to fix? because the dealership where I bought this car is far away.
  • 1racefan1racefan Posts: 932
    I would take both, BECAUSE.....

    What you described (an increase in RPMs) is a "flare". The TSB you are mentioning does not specifically mention the "flare" in RPMs between gears.

    Any Hyundai dealer should be able to handle the repair. Just a suggestion - I wouldn't go up to the service guy and specifically say, "This TSB needs to be performed to my car." I would instead say, "My car is doing such and such, and through my research I have discovered these 2 TSBs. Could you please see if they are applicable to this situation?"

    Going this route, you aren't coming off as being too arrogant (or acting more knowledgable than the service guy), but yet you will have given him enough info to know that you somewhat know what you are talking about.

    PLEASE - let us know how things work out for you. I have found the guys taht post regularly on this Elantra forum (doohickie, backie, jlflemmons, snakeweasel, and a few others), to be extremely helpful. These guys are very quick to help solve a problem, or offer a how to, which epitimizes why message boards like this exist.
  • carsnakecarsnake Posts: 4
    Many thanks for the help, I'm sure without this knowledge I would have gone through a very frustrating process. Hopefully, this is the trick. I will definitely follow your instructions and let you all know what happens.
  • dc_newbiedc_newbie Posts: 6
    Similar to problems that I'm reading here. My 2001 Elantra Automatic has started skipping or flaring on some gear changes. You feel the skip and then the rpm goes higher than normal immediately and the check engine light comes on. When I stop and restart the problem goes away and the transmission engages normally and no Check Engine light. This happens often, but more often when it is above 80 degrees outside.

    Anyone had this happen to them? I have an appointment with the delare for Tuesday and am preparing. Total mileage on my car is 49K, so I'm hoping this is still covered in warranty.
  • wickdgtwickdgt Posts: 1
    Hi there, I will like some info if any one can help me. I have a 2000 Hyundai Elantra which has developed a leak at the Vent of the tranny (automatic). I can drive the car easy all day long with no problems, as long it is cruising, but when you run it a bit harder in traffic it will puke the tranny fluid through the vent, I have taken it to tranny shops and no one can give a straight answer. I have pull a little bit the dipstick out so to see if pressure builds up it will not puke it, but even like that it would do it. I have looked everywhere but no luck. Can anyone tell me what is going on? Thanks for any info:

  • vduhrvduhr Posts: 2
    I also have a 2001 Elantra, and have recently, over the past couple of days, experienced the same problem. The temperatures where I live has been above the 80’s for over a month (closer to 90-100), but I am just now experience this problem; however, we are in our rainy season, and the humidity has been in the 70% for the past couple of days (higher than normal - normally we have 15% humidity in the summer (high-desert), and temperatures in the 80’s). As you have done, when I experience this problem, my transmission seems to skip, jumps into gear, then my engine light immediately goes on and I lose some power upon starting out from a slow or complete stop. Once I shut the engine off and restart it, the engine light goes out and the transmission seems “normal”. I have been experiencing slight transmission slipping over the past couple of months, but have not taken the car in for a checkup yet. I checked my transmission fluid today, and saw it is brown although it is full, and think it should be red, so I most likely need a transmission fluid change; however, on a car that has 70,000 miles, and needs maybe only a tranny fluid change, would this behavior be normal?
  • Hi..This sounds exactly like the problem I had. I took it to the dealership since the transmission warranty is 10y/100K miles. Was informed that the transmission is fine, but the speed sensor and the cam sensor have blown out and that is sending the wrong speed to the transmission, causing it to slip. Total cost to replace was $440 and approx half a day at the shop.
  • vduhrvduhr Posts: 2
    Thanks for the info. I am not covered under a warranty because I bought the car used from a non-Hyundai dealer (transfer of warranty only goes to 60,000 miles if pre-owned). Was the cost of your repair under warranty?
  • No, the sensor valves were not covered under the powertrain warranty, so I had to pay for it.
  • Has anyone changed the trans fluid 2005 . I understand that
    you just remove a plug. then refill the trans to the
    proper level on the dip stick (hot) There is a big plug
    at the bottom of the trans

    What is a good tans fluid that meets the sp lll hyundai
    fluid.. thanks
  • Bought the 07 elantra 3 weeks ago and when I put her into reverse sometimes I get a very weird noise....kind of like I'm dragging something underneath my car! At first I thought I hit something... but no! Then I looked under and there's nothing loose or anything. Does anybody know what I'm talking about? By the way I've got the 5 speed.
  • My Elantra is doing the same thing as well. What was wrong, was it covered under the warranty, and if nit, how much did they get you for?
  • doohickiedoohickie Posts: 949
    If you haven't changed your AT fluid yet, you should know that basically ONLY SP-III fluid meets the SP-III specs. Transmission and service shops often state they have some kind of "universal" fluid, but unless you see in writing on the bottle it says it meets SP-III specs, DO NOT allow them to put it in your car! If they do, and you later have transmission problems, your warranty will not be honored. SP-III differs enough from Mercon and Dexron fluids that it cannot be replaced by "universal" fluids.
  • Hi - They said that the speed sensors that signal the transmission were busted and needed to be replaced. The fixed them for $450 and it worked fine. I traded it in 2 months not sure how long the fix lasted. The sensors were not covered under warranty, ofcourse...:-)
  • luxorluxor Posts: 2
    You can go to walmart and buy ATF+4 that is the other name for the recomended transmission fluid also it will usually list Hyundai right on the bottle. At walmart it is around $2.80 per quart. Otherwise you will end up paying about $4.50 or more per quart.
  • dan124dan124 Posts: 1
    I have a 2000 Elantra that right before the holidays began slipping out of gear as traveling and couple of days later I was in a parking lot and it would not go to Reverse and I still have the problem. I can still shift into drive but reverse is not an option; therefroe, no travel at the moment. The car has around 150k miles on it. Any suggestions as to the issue.
  • colloquorcolloquor Posts: 482
    Not so . . . Chrysler spec ATF+4 is not the same as SP-III ATF. Use your own discretion, but saving a few dollars a quart on ATF, and then later having to spend a couple of thousand for a new automatic transmission doesn't make much sense to me.

    If you drive a Hyundai, Kia, or Mitsubishi, use ONLY SP-III ATF, otherwise you're asking for trouble.
  • colloquorcolloquor Posts: 482
    Dan - go to on the Usenet groups, or use Google Groups to access the group, and ask the question to Hyundaitech on the Hyundai Usenet forum. You will get a quick answer to your query, as he's a certified Hyundai technician.
  • luxorluxor Posts: 2
    Super Tech ATF+4 (for use in most chrysler,dodge,plymouth,and some mitsubishi and hyundai automatic transmissions and transaxles) I can also say for sure that most parts in or on the 2000 hyundai elantras are actually made by mitsubishi they have mitsubishi motors and transmissions. Most people know some chrysler transmissions are in fact made by mitsubishi they have bought and used them along with motors since the late 1980's early 1990's . Why pay $8/quart at a dealer when the Super Tech is only $2.80 or a little more I have used it in my 2000 hyundai elantra gls at every change and I'm at 115,000 the tranny shifts perfect,smoothly and I still leave most others at a standstill from the light (40miles/gallon) better than cars today. The only thing that ever gave it a harsh shift was when I had to replace the vacuum tube running from the pump hooked to the intake the harshness was caused by power loss. The fuel pressure regulator looks like it might have formed a small leak over time(oily substance where vac tube connects) but it is working right so it could be oil introduced into the intake via crank case pressure line as on most cars. It is a one owner car also (I bought it new) which shows I've used the super tech way more than once with no problems. To show you all how dealers nail you. When I needed a new regulator for my drivers side window the dealer I bought the car from wanted $89.99 I looked online found an oem parts dealer (actually a hyundai car dealer also) in florida that said the price was $28.99 and shipped two day air it was $47.99 and no tax! That just shows what dealers pay for most things. The rest go's in their pocket! But if in doubt ask any auto parts store they will properly inform you on what to buy.
  • colloquorcolloquor Posts: 482
    Mitsubishi only made the 3.0L OHC V6 for Chrysler. And, Chrysler's 4-speed ECT's - which were known for having problems - were made by Chrysler in Michigan - they were not sourced from Mitsubishi. The Elantra Beta Inline 4 started its design life as a Mitsu engine, but Hyundai has made many changes to it. The 4-speed automatic's design in the Elantra is of Mitsu origin, but Hyundai manufacture.

    All of this is really beside the point, as ATF+4 does not have the same formulation as SP-III. If the poster wants to use ATF+4 in their 2000 Elantra, so be it. But, Hyundai WILL NOT provide any warranty support for any automatic transmission in a Hyundai that uses any other ATF other than SP-III. One must have documented proof that SP-III ATF was used, otherwise you kiss your 10 Year/100,000 Mile powertrain warranty goodbye. Again, why save a few dollars on a quart of ATF, when a non-warranty replacement transmission will cost you thousands of dollars. It's that old adage: Penny-wise, and Pound-foolish.
  • jfh2jfh2 Posts: 3
    my dad's '04 elantra w/ 40K miles broke down this week. it developed trans fluid leak. He took to a local garage the car sat overnight by the morning the garage said it was very low on fluid. He took the car to the dealer to see if still was covered by the warranty - the dealer said that since my dad hadn't changed his trany fluid at 30K they would not honor the warranty. can't believe that this was the cause of the transmission leak. what can he do to get the dealer to fix this?
  • I have a 2004 Elantra that I bought with 17 miles on it and it now only has just over 50,000. the new Tranny has only 200 miles on it and guess what my car caught on fire today. I call the dealership and had them tow it, I got a loaner, and now I am lost at what to do. First the new tranny was covered under the warranty. Well when the fire department got where I was they showed me where the tranny lines had not been clamped off. As I looked under the hood of my car. EVERYTHING was covered in wet red fluid.... the fire fighter told me that If I had gone a few more feet my whole car would have been engulfed in flames. The fluid was all over the frame on the battery spark plugs on the engine block every where. SO I told them I want a everything that had any tranny fluid on it replaced. so only time will tell.

    :sick: :lemon: :lemon: :mad:
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