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Genesis Forum: Engine Hesitation
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  1. #16
    Mark_888 is online now Registered Member What I drive: 1G Genesis 3.8 V6 Sedan
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    Default Re: Engine Hesitation

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    Quote Originally Posted by Winelover6 View Post
    I've just bought my new 2012 Genesis sedan two months ago and have a very annoying hesitation problem when I'm going a under 5 miles/hour then try to accelerate. Nothing happens when I step on the gas for 1-2 seconds. Almost got me into an accident last week trying to pull into traffic. Took it to the dealer and they claim they could not duplicate the problem. That night, leaving the dealer it happened twice!
    Any one have an idea what the problem might be? I think it has something to do with the timing or computer controls used in acceleration. I'm not that car savvy but I know when something's wrong. Every other car I've driven never had this issue, including rentals.
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  2. #17
    roblaw is offline Getting familiar with the group... What I drive: Genesis 3.8 V6 Sedan
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    Default Re: Engine Hesitation

    I cannot be sure about your car but I would guess it is the transmission issue others have complained about and Hyundai has done nothing to fix. The 8-speed shifts into the highest gear as soon as possible and then needs to be floored to downshift to a lower gear, which then takes a few beats.

    There is an entry about this and I contacted Hyundai in October of last year but they have done nothing.

  3. #18
    Winelover6 is offline Hasn't posted much yet... What I drive: Genesis 3.8 V6 Sedan
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    Default Re: Engine Hesitation

    I tend to agree with you. It seems inherent to the transmission. However, it does seem a bit better when I turn off the ESC. Also using the transmission in manual made fixes the problem but either of these fixes shouldn't be necessary. The other attributes of the car sort of make up for this flaw and I guess I'll just have to get used to it. It will be something that I will definitely look for if I consider leasing another Genesis after this one.

  4. #19
    GennyFromDaBlock is offline Hasn't posted much yet... What I drive: Genesis 3.8 V6 Sedan
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    Default Re: Engine Hesitation

    Quote Originally Posted by Mark_888 View Post
    No hesitation whatsoever at that speed with my V6. Slight hesitation when decelerating to a few MPH and then accelerating too rapidly right after that. Most of these problems are the result of lead-foot driving habits. The Genesis (even the V6) accelerates much faster than most people realize, so you need to learn how to work the throttle with a softer touch...
    This is SOOO true! I have the 3.8 v6, and still had to adjust to the faster acceleration...

  5. #20
    EXBMWGUY's Avatar
    EXBMWGUY is offline Been here awhile... What I drive: Genesis 5.0 V8 R-Spec Sedan
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    Default Re: Engine Hesitation

    This problem is described almost exactly like the 2011 BMW 5-Series with N55 turbo I-6 on other forums. It has been a widespread problem on recent BMWs.

    I have no such symptoms on my 5.0, but it was brutal on my 5-Series. I hope it can be resolved by the dealer.
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  6. #21
    Stoofpilot's Avatar
    Stoofpilot is offline Been here awhile... What I drive: 4.6 V8 Tau Sedan
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    Default Re: Engine Hesitation

    I also had this issue yet after a cold start problem, the dealer found some codes in the ECU and did a reflash of the ECU. It made a tremendous difference in the overall drivability of the car. Runs great now!

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  7. #22
    martyk is offline Registered Member What I drive: Genesis 4.6 V8 Tau Sedan
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    Default Re: Engine Hesitation

    Quote Originally Posted by Stoofpilot View Post
    I also had this issue yet after a cold start problem, the dealer found some codes in the ECU and did a reflash of the ECU. It made a tremendous difference in the overall drivability of the car. Runs great now!
    Can you give us more info on what was the codes he use to reflash.

    Marty

  8. #23
    Stoofpilot's Avatar
    Stoofpilot is offline Been here awhile... What I drive: 4.6 V8 Tau Sedan
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    Default Re: Engine Hesitation

    If you search "cold start problem", you should see my post with the codes included.

  9. #24
    jrbinaz is offline Hasn't posted much yet... What I drive: Genesis 4.6 V8 Tau Sedan
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    Default Re: Engine Hesitation

    I am also becoming increasingly concerned about the "rolling stop" delay that has many of us frustrated when the car is in automatic mode. I have developed a similar fear of pulling out in traffic after a quick near stop and go. I am never certain when and how much power I will get when I take off.

    Just an observation to add to this discussion. I put the tranny in Shiftronic mode and geared up to 6th or 7th and allowed the car to slow to a stop. During this time I watched the gear numbers automatically scroll down as the car slowed. Curiously the tranny drops automatically down thru each gear but skips 2nd gear every time. Just drops from 3rd to 1st first when you slow to 3 mph or so. That doesn't seem normal to me, but I guess may be by design.

    I wonder if the tranny is doing the same thing in auto mode...just skipping from 3rd to 1st? Maybe that's the cause of the hesitation. I think the car is still in 3rd at the near stop. Perhaps if it would go to 2nd at 3 mph it wouldn't pause to think about what gear it's looking for when power is applied.

    Any thoughts?

  10. #25
    bcongl is offline Hasn't posted much yet... What I drive: Genesis 3.8 V6 Sedan
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    Default Re: Engine Hesitation

    I have the same hesitation issue with my 2012 Genesis Sedan 3.8 that everyone is experiencing from a rolling stop or accelerating from a lane change. I have had my my car since December '11 and love this car but this one issue is enough for me to consider trading it in, as this is just plain DANGEROUS. I had a Sonata Turbo prior to this car and had no such issue EVER.
    I thought before I move away from Hyundai, I would see if anyone has experienced this with the 5.0 Sedan?

  11. #26
    EXBMWGUY's Avatar
    EXBMWGUY is offline Been here awhile... What I drive: Genesis 5.0 V8 R-Spec Sedan
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    Quote Originally Posted by bcongl View Post
    I have the same hesitation issue with my 2012 Genesis Sedan 3.8 that everyone is experiencing from a rolling stop or accelerating from a lane change. I have had my my car since December '11 and love this car but this one issue is enough for me to consider trading it in, as this is just plain DANGEROUS. I had a Sonata Turbo prior to this car and had no such issue EVER.
    I thought before I move away from Hyundai, I would see if anyone has experienced this with the 5.0 Sedan?
    See my post earlier in this thread. I have had no issues with hesitation after 12,000 miles in my 5.0 engine.

  12. #27
    ppanhorst is offline Hasn't posted much yet... What I drive: Genesis 3.8 V6 Sedan
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    Default Re: Engine Hesitation

    I had a similar hesitation problem when starting from a rolling start. The dealer could not duplicate the problem so he had a Platinum Certified Mechanic ride with me. After 2 blocks, he noticed that I was driving with both feet. He said I may be touching the brake pedal and the gas pedal at the same time, sending mixed signals to the computer. I planted my left foot on the floor and drove with only my right foot, and I haven't had the problem since. Operator error!

  13. #28
    StangKiller is offline Registered Member What I drive: Genesis 5.0 V8 Ultimate
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    Default Re: Engine Hesitation

    You drive with two feet? Lolz is that hard?

  14. #29
    Potty_Pants's Avatar
    Potty_Pants is offline Been here awhile... What I drive: Genesis 5.0 V8 R-Spec Sedan
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    Default Re: Engine Hesitation

    Quote Originally Posted by StangKiller View Post
    You drive with two feet? Lolz is that hard?
    I walk on all 4s... driving with two feet shouldnt be that difficult

    next question why am i replacing breaks every 10-15k miles

    and why am i calling it breaks instead of brakes

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  15. #30
    ppanhorst is offline Hasn't posted much yet... What I drive: Genesis 3.8 V6 Sedan
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    Wink Re: Engine Hesitation

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    It did not occur to me that some people would not understand the phrase 'driving with two feet'. If you are old enough, you will remember that we all used to drive that way. And for you people that have trouble understanding English, we used our left foot on the clutch and our right foot on the accelerator or the brakes. Since there is not a clutch pedal on automatics, I was using my left foot to activate the brakes and my right foot on the accelerator. I did not 'ride' the brakes, but apparently I sometimes had not completely removed my left foot from the brakes before I hit the accelerator with my right foot.

    ...Just trying to help....

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