Engine falls flat on it's face

[crestviewgenesis]

It could be the programming in the TCM. You might see if the dealer can reflash it and see if it helps any. I know in my previous car (G8) the transmission got really confused when I punched it after a lot of ginger driving. Its especially bad if you manage to ask for a lot of power right as its starting an upshift because it will seem like the transmission stalls for a second as it reengages the lower gear.

I had a G8 GT back in 08 and by now way is L76 engine/tranny comparable to the Genesis. For having the same size engine comparable hp and weight a G8owns a Genesis in every way "engine wise" All i can recommend is that you get your car tuned and the problem will go away...hopefully on the first tune.

 

[Pahaska]

I wonder if this is a complaint of the 2011 and earlier V8s that have the ZF transmission?

Absolutely YES. It is the transmission shifting into a high gear at a low forward speed when I have to lift my foot because of traffic in front of me. If I push the lever over to manual righ then, I find I am in 4th or 5th gear at maybe 5 mph. The downshift takes a lot of throttle and seems to take forever, followed by an embarrassing leap forward.

I have learned to move the shift lever over to manual at certain intersections and shift to 2nd before entering the intersection when I know I may need to accelerate reliably.

This is my main complaint with an otherwise great car.

 

[JasTheAce]

I had a G8 GT back in 08 and by now way is L76 engine/tranny comparable to the Genesis. For having the same size engine comparable hp and weight a G8owns a Genesis in every way "engine wise" All i can recommend is that you get your car tuned and the problem will go away...hopefully on the first tune.

I had a cortex but its still possible to confuse the tranny. Unless it's a manual you have to live with the fact it will shift when it wants to, and if you want to shift the opposite way you have to wait until it's done. I had only manual cars before the g8.

Not to derail but the genesis r spec pulls harder in gear than the g8 with an intake and tune, but takes forever to shift in comparison (evens out).

 

[CanukV6]

My 2012 3.8 does exactly the same as P-bar describes. When rolling slowly off throttle and then trying to accelerate, the car just bogs down. If it was transmission I would still expect the engine to react to the throttle, but it doesn't. I have experienced delays with the transmission being slow to drop a few gears (usually when cruising and increasing throttle part-way but not at kick-down), but this is not the same. There is a distinct delay before the engine reacts to the change in throttle position. It also seems to be getting worse. I am suspecting a faulty throttle position sensor. From a full stop and moderate acceleration the car reacts quickly, as it does for passing when you engage full throttle, but at slow (walking pace) speeds the delay is both annoying and potentially hazardous.

 

[P-bar]

Good to know that Hyundai thinks others are smoking crack too. I called the dealer and will be taking it in. I told them i didn't want this stopping with the tech and that I wanted the district field rep to be involved. Reminds me of the time I bought a brand new ford f150 in the eighties and when I was going up a steep city road at 25 it would jerk back and forth . i took the adviser on the same route and he said the rings needed to seat. I said oh ya get the district service mgr. on the horn and he solved the problem. So I will be kicking some butt. I am armed with the internet

 

[crestviewgenesis]

I had a cortex but its still possible to confuse the tranny. Unless it's a manual you have to live with the fact it will shift when it wants to, and if you want to shift the opposite way you have to wait until it's done. I had only manual cars before the g8.

Not to derail but the genesis r spec pulls harder in gear than the g8 with an intake and tune, but takes forever to shift in comparison (evens out).

G8GT=Genesis 4.6

G8GXP= Genesis Rspec

In no way can the genesis beat the equivalent G8 just sayin sorry for the derail op.

 

[JasTheAce]

G8GT=Genesis 4.6

G8GXP= Genesis Rspec

In no way can the genesis beat the equivalent G8 just sayin sorry for the derail op.

My point was that the slower shifting transmission in the r spec negates the power advantage over my previous g8 gt. The genesis and g8 are vastly different beasts.

That said, it is often possible to confuse the auto transmission in the car if you decide to suddenly accelerate hard at 10mph after going light unless you manually select the gear. This gets amplified with more gears, so beware the 10-speed!

 

[kman]

I brought this issue up on Hyundai think tank website, on their Genesis forum. After a few other members confirmed that they have the same issue I've had customer service contact me. Guess what they recommended? Go see a dealer who will be best able to diagnose this problem (as if this was the only Genesis with this problem). I only see two outcomes from this:

a) The dealer tells me everything is fine

or

b) The dealer asks me to leave my car, beats the hell out of it, comes with the whole tank of gas gone and says that everything is fine



Here is a summary of what I wrote on their forum:
"
The worst part about this is that it is very unexpected and it happens when you need fast acceleration (merging). You expect the car to take off quickly under full throttle, and it actually is slower than if moderate throttle was applied due to the lag of transmission gear changes.

It feels like (not sure what actually happens) as if the car instead of going from 8th to the 3rd or 2nd gear and accelerating, it goes from 8th to 7th (decides that the gear is still too high, revs climb up), goes from 7th to 6th (same thing again), 6th to 5th, 5th to 4th and 4th to 3rd, and this is where you get neck snapping acceleration after what seems like a second or two of coasting with the accelerator floored.
"

If you are a member of hyundaithinktank.com, and have experienced this issue I suggest you speak up on their Genesis forum. If they see a lot of responses they might give this a second look.

 

[mtrot]

I brought this issue up on Hyundai think tank website, on their Genesis forum. After a few other members confirmed that they have the same issue I've had customer service contact me. Guess what they recommended? Go see a dealer who will be best able to diagnose this problem (as if this was the only Genesis with this problem). I only see two outcomes from this:

a) The dealer tells me everything is fine

or

b) The dealer asks me to leave my car, beats the hell out of it, comes with the whole tank of gas gone and says that everything is fine



Here is a summary of what I wrote on their forum:
"
The worst part about this is that it is very unexpected and it happens when you need fast acceleration (merging). You expect the car to take off quickly under full throttle, and it actually is slower than if moderate throttle was applied due to the lag of transmission gear changes.

It feels like (not sure what actually happens) as if the car instead of going from 8th to the 3rd or 2nd gear and accelerating, it goes from 8th to 7th (decides that the gear is still too high, revs climb up), goes from 7th to 6th (same thing again), 6th to 5th, 5th to 4th and 4th to 3rd, and this is where you get neck snapping acceleration after what seems like a second or two of coasting with the accelerator floored.
"

If you are a member of hyundaithinktank.com, and have experienced this issue I suggest you speak up on their Genesis forum. If they see a lot of responses they might give this a second look.

Sounds like it's time for a performance chip Not to increase horsepower, but to correct the transmission downshift parameters.

 

[nb_mike]

I have a 2013 3.8 and haven't noticed a hesitation. I have passed large trucks on 2 lane highways with no problems. I also like the growl when I kick it in.

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[bendriver]

I have identical issue with 2013 Genesis sedan. when I pull out from slow moving traffic into fast moving traffic lane, the car falls flat. That is, when I accelerate hard the car hesitates for approximately 1-2 seconds. It is scary and I have come to consider this a safety issue

 

[jlindh]

Bendriver, be nice to that car. It's very rare!

 

[adauria]

I have a 2013 3.8 and haven't noticed a hesitation. I have passed large trucks on 2 lane highways with no problems. I also like the growl when I kick it in.

So far I'm with you, but I've only put a few hundred miles on a it so far.

-Andrew

 

[WowCool]

This Issue may or may not affect All 3.8 V6's - who knows..
I personally have not found my "G" to be wanting when instant power is needed, there is an easy workaround:- when U need that Immediate Power:-
go into + - Mode and drop a gear..

 

[Jbo]

Did you by chance have you left foot on the brake either touching or slightly pressing in either anticipating needing brakes or attempting to build power?

 

[scottdk]

Call me crazy, but I think old thread from 2008 relates to the same issue:

http://www.genesisowners.com/hyunda...read.php?t=1213&highlight=linear+acceleration

 

[kman]

So far I'm with you, but I've only put a few hundred miles on a it so far.

-Andrew

It doesn't happen often to me. In the 30,000 miles I have on my Genesis it has happened maybe 10 times. But when it happens, and you see that car approaching in the mirror while the car coasts (and you are flooring it), you will remember it very well. While it is difficult to specify exactly under what conditions it happens, the common denominator for what I experienced has been that the car is moving slowly, 5-20 mph, and you floor it while changing the lane (to merge quickly). All that happens for 1-2 seconds is that the car coasts at the speed you were going, and you see the revs going up and the transmission shifting to a lower and lower gear (but not sending any of that power to the wheels), until it gets to the 2nd or 3rd gear and then your head snaps back as it accelerates very quickly (but 2 seconds too late). So instead of the expected takeoff you get 2 seconds of nothing while the car in the lane that you got into is getting uncomfortably close.

In that situation, changing the gears to manual selection simply would not work. It is usually a quick decision, so you don't have time to drop from 8 to 2 quickly, as the transmission shifts the gears sequentially and is quite slow in the manual mode.

 

[kman]

Call me crazy, but I think old thread from 2008 relates to the same issue:

http://www.genesisowners.com/hyunda...read.php?t=1213&highlight=linear+acceleration

That doesn't appear to be what I have experienced. To compare it to driving a manual transmission car, it feels as if instead of going from pressing the clutch and shifting from 8 to 3rd, and letting the clutch go, the car behaves as if the clutch is pressed in, it shifts 8 to 7, rev matches (while still holding the clutch), then decides that it should shift from 7 to 6, rev matches (while still holding the clutch), does the same from 6->5, 5->4, 4->3 and then finally lets the clutch go and applies the power. That whole shifting process takes 1-2 seconds, and seems to disconnect power from the wheels while it is shifting and raising the revs. Once it gets to the right gear, the acceleration is as you would expect, but much later than you expected.

I'm thinking that this is the side effect of protecting the transmission (through software) so that it lasts 10 years.

 

[Gunkk]

If you want to test this, put it into "manual" aka triptronic mode and then mash the gas. You can watch it downshift.

My 6 speed ZF does it rather quick ... at ~45 mph, it goes from 6th to 5th, then jumps to 3rd then stops at 2nd all in about a second, and then my kidneys end up in the back seat.

 

[DRS]

It doesn't happen often to me. In the 30,000 miles I have on my Genesis it has happened maybe 10 times. But when it happens, and you see that car approaching in the mirror while the car coasts (and you are flooring it), you will remember it very well. While it is difficult to specify exactly under what conditions it happens, the common denominator for what I experienced has been that the car is moving slowly, 5-20 mph, and you floor it while changing the lane (to merge quickly). All that happens for 1-2 seconds is that the car coasts at the speed you were going, and you see the revs going up and the transmission shifting to a lower and lower gear (but not sending any of that power to the wheels), until it gets to the 2nd or 3rd gear and then your head snaps back as it accelerates very quickly (but 2 seconds too late). So instead of the expected takeoff you get 2 seconds of nothing while the car in the lane that you got into is getting uncomfortably close.

In that situation, changing the gears to manual selection simply would not work. It is usually a quick decision, so you don't have time to drop from 8 to 2 quickly, as the transmission shifts the gears sequentially and is quite slow in the manual mode.

Agreed.. THIS IS a safety issue. Had it happen to me.