V6 Hesitation

[Mark_888]

The V6 does not have a problem with a dead-stop and start. The V6 hesitation only shows up with a rolling stop and fast start. I have learned to more slowly accelerate after a rolling stop so the hesitation doesn't happen. I think people are wildly exaggerating the problem on the V6 (can't speak for the V8).

 

[jabrown6940]

I have the V8, with about 8000 miles on it now. I've had this happen to me about four or five times, from a dead stop. (Normally when I'm turning from a side street on to a major street with traffic) I step on it and nothing. Ease up then step on it a second time, and it goes. Like I said, normally, from a side street, turning on to a major street, but once, when crossing a major street. Always from a full stop.

Don't like "Drive By Wire"!

My V8 screams off the line from a dead stop. I have had a hesitation after the initial acceleration. Had to let off the gas to reaccelerate.

The V6 does not have a problem with a dead-stop and start. The V6 hesitation only shows up with a rolling stop and fast start. I have learned to more slowly accelerate after a rolling stop so the hesitation doesn't happen. I think people are wildly exaggerating the problem on the V6 (can't speak for the V8).

This is the main hesitation problem for me and the same solution.

 

[BATTCHIEF]

You can add my 4.6 to the list of those with hesitation. Only occurs when the vehicle is rolling slowly as when making a turn and waiting for traffic to clear. I think the tranny theory may be right. I took it in and the tech reported NTF, stating he could not duplicate the problem. It is a rather scary event as it feels like the motor had died leaving you in the middle of traffic and then it comes roaring back. I have tried placing the gear shift in the manual shifting mode and have noticed that even at a very slow roll it was in 2nd rather than first. When I have manually shifted to 1st and then hit the gas it never hesitates.

 

[tjc78]

This type of behavior is normal for these newer transmissions and programming. Go check out any recent Toyota boards (Avalon, Camry, ES350, etc) and you will find complaints of this. My '06 Avalon did it and now my Genesis acts the same way. I could swear my Av and Genesis have the exact same transmission logic.... one or two second delay on downshifts and the low speed hesitation.

 

[ctrcbob]

You can add my 4.6 to the list of those with hesitation. Only occurs when the vehicle is rolling slowly as when making a turn and waiting for traffic to clear. I think the tranny theory may be right. I took it in and the tech reported NTF, stating he could not duplicate the problem. It is a rather scary event as it feels like the motor had died leaving you in the middle of traffic and then it comes roaring back. I have tried placing the gear shift in the manual shifting mode and have noticed that even at a very slow roll it was in 2nd rather than first. When I have manually shifted to 1st and then hit the gas it never hesitates.

This is exactly what happens to my 4.6, like when car is rolling slowly, as when you make a "California Stop", or when rolling out of a driveway, or side street. Hardly moving. Then step on the gas, and NOTHING. Either step on it harder, or let up, then re-step on it, and it "catches" and goes like hell. Scares me when traffic is coming. (read "dangerous"). As for the dealer "could not duplicate the problem", yes, this will be a problem for the dealer to have this happen, as it does not always do it but seldom. (I just hate it when [with another car I had] a service department says, "I'm sorry sir, but we can't duplicate the problem").

This may be something we have to live with.

 

[genlux]

Found an interesting article regarding acceleration hesitation in the Genesis Coupe from an early Edmunds test. Possible solution for Genesis sedans? Excerpt below.

"Another problem was the car's ECU. It was programmed for damage control, not 0-to-60mph runs, so it was cutting power when it was needed most. We complained about this system in the test article and were sure the car would accelerate quicker if the damage control system was backed off a bit.

Hyundai agreed and made a running change to the ECU that keeps it from cutting in during fast shifts. Hyundai is fast at work reflashing all the cars now at dealers and at the port (If you're one of the few that has already bought a Genesis Coupe, call your dealer and they'll reflash your car for free)."

Full Article

 

[Pahaska]

It happens on V8 sedans, also, and is really scary. I have had several instances of the hesitation that I posted in another thread. It has happened when I rolled slowly into an intersection and had to pause before a left turn. It almost felt like the engine had died, then jumped forward roughly when I floored it.

I hope Hyundai comes up with a reflash for the V8. This is the only major complaint I have with the car.

 

[Seattle Genesis]

I know this is an old thread, but this happens to me when I slow down for a speed bump and then barely tap the pedal and boooooom Im taking off like a rocket. Pretty darn scarry.
Seattle Genesis

 

[Genesis380]

Use midgrade or premium and the hesitation will disappear.

 

[BATTCHIEF]

I only use premium in my 4.6 and it has had no effect on hesitation. I believe the "fly-by -wire/tranny" theorists are correct on this one. I have found that there is never any hesitation when I manually shift to 1st before tromping the pedal. The shift program appears to be biased towards the highest gear possible at a given speed for the sake of fuel economy. When you move the shift lever over to the manual shift gate you will notice the gear number is indicated on your display. I have tried this several times when slowing down for a turn and found that even at very slow speeds the tranny remained in 2nd. I don't know if Hyundai can re-program to eliminate this as it will have an effect on mpg and there may be federal rules that apply.

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[ilovemygenesis]

i get the same issue with the hesitation, i also get the problem when i'm going uphill the power sometimes stalls i have to press harder on the pedal to maintain speed. I figured with the increase in horse power this shouldn't be an issue, am i wrong?

 

[jonah]

The agressive upshifting is my least favorite part of this car, and the frequent bogging down of the engine when exiting a slow turn is unnacceptable. I would think that if enough owners complained about this loudly enough that Hyundai would have to offer a solution. It would be very easy to fix this problem, technically, but there might be other consequences that would make it more complicated than we think.

 

[Terry Wells]

I have noticed the hesitation for the past month or so, I only have about 4k on the car. I took it to the dealer and was told that the computer was adjusting to the way I drive which seemed rather strange. The car also has a sort of drag feel to it when I attempt to coast at speeds less than 40mph. Last week I took the car on a long trip and now the hesitation is gone, at least for now. Did the engine just need to be blown out?

 

[doug725]

My own experience and a seacrh of various Hyundai forum topics reveals that this is a common feature/occurance/issue (you define) with almost all Hyundai models. Some exhibit more than others and it can vary day by day. The other two common issues you see are suspension oddities and mysteriously cracking windshields. I'm not sure a fix is forhcoming for the hesitation as it's just part of the "design. "

 

[Mark_888]

I have noticed the hesitation for the past month or so, I only have about 4k on the car. I took it to the dealer and was told that the computer was adjusting to the way I drive which seemed rather strange. The car also has a sort of drag feel to it when I attempt to coast at speeds less than 40mph. Last week I took the car on a long trip and now the hesitation is gone, at least for now. Did the engine just need to be blown out?

I believe that the computer in question is controlling the transmission, not the engine. Most modern transmissions have adaptive logic that adjusts to your driving habits. If you tend to have a lead foot, then acceleration is not as smooth as it would be if go easy on the gas pedal. I had the same issues with a Toyota that seemed to get better over time.

 

[GripperDon]

I have noticed the hesitation for the past month or so, I only have about 4k on the car. I took it to the dealer and was told that the computer was adjusting to the way I drive which seemed rather strange. The car also has a sort of drag feel to it when I attempt to coast at speeds less than 40mph. Last week I took the car on a long trip and now the hesitation is gone, at least for now. Did the engine just need to be blown out?

I don't have the hesitation that yo refer to, but surely believe that you can. Regarding the lack of free wheeling associated with the transmission, I believe it is a design flaw, (Oops should not say things like that) The only way I can get it to release quickly is to "Tap" the throttle so that the transmission fells a more abrupt release of drive thrust. I have tried to get used to it, and have been somewhat successful, at least as compared to the ride, which I can't get used to.