My 2015 Genesis HTrac, 3.8 hesitates!!?

[Reactorick]

Has anybody experienced their Genesis hesitating when you push the throttle down slowly rather than quickly accelerating. It acts like if you had a carbureted engine and a bad accelerator pump on the carb, it hesitates for a moment, (to say, it needs to catch its breath), then takes off? My dealership says that's normal and I'm nuts! The car has less than 10,000 miles on a new factory fresh 3.8 Liter engine due to a defect in the original engine! Bought the car, 81 miles later, (next morning) started engin up in my garage and the top end shit the bed. Dealership had car for 4 weeks. Got to say Hyundai stood by the CPO warranty! Anyway talked to Hyundai customer service gave me a case number. I then went to dealership, their mechanic drove car with me and he said i'm being too picky, the computer has to think what it needs to do? I told both the mechanic and the service manager it never did this before or after the new engine was installed. I have driven other Genesises same as mine and those did not drive that way. Can I get some advice from you folks out there? Anybody might have experienced this or know what to do to correct it. It's driving me crazy!

 

[Don'tneedastinkingbadge]

This is probably a dumb question, but what drive mode do you use? I was driving around in my 2015 Ultimate AWD, and I noticed a certain lack of engine to pavement response. Felt like the tranny was slipping on acceleration. The recommended I try the Sport mode. That seemed to help with that feeling and also tightened the steering.

 

[Reactorick]

I usually have the car in normal mode. This feeling does not feel like the tranny is slipping. Just a moment of hesitation, (greater than 2-3 seconds) when pedal is pushed down. In sports mode it's a little less noticeable.
I know this engine is by fly by wire so I am assuming it's something with the pedal end or the throttle end that needs to be replaced or adjusted! It's driving me crazy. The service manager says i'm crazy!

 

[Alfer]

Yes it's indeed a thing. My AWD does it and it can be annoying, but recently it almost caused me to have a wreck. I was exiting a highway and at bottom off off-ramp I stopped to make a right merge turn (with several cars waiting behind me). I came to a stop to wait on oncoming traffic. I saw what I thought was an opening and started to hit the gas and had the dreaded pause. By the time I realized what was going on, I had to stop since I missed my opening, another opening came and I hit gas fairly hard and car didn't go anywhere for like 2 seconds but I was committed to the merge so as my heart sank thinking I'd get rear ended if I stopped or hit from side, I just hit the gas again and car took off.

It was really scary hitting the gas pedal and have nothing happen for count of 2 or 3.

I now plan ahead knowing the pause exists in Normal mode and adjust driving habits accordingly.

Sport mode never has that issue. Just the Normal one.

 

[kolme]

Might consider a sprint booster to decrease the throttle response threshold. It sounds as though the threshold is set too high from the factory, resulting in low throttle opening even with a fair degree of pedal depression. Just my thoughts.

 

[AustinQuinn]

Might consider a sprint booster to decrease the throttle response threshold. It sounds as though the threshold is set too high from the factory, resulting in low throttle opening even with a fair degree of pedal depression. Just my thoughts.

Would a sprint booster effect the warranty in any way? Ive been looking into something like this but was warned by a friend that it might void the warranty.

 

[1FstYota]

I felt it a few times, but its def not as bad on the gen 2, the Gen 1 had a serious pause that like some said have almost caused an accident. In normal I give it a bit more throttle to alleviate this.

 

[need4spd]

I have seen it also in normal mode. Even worse is if accelerating out of a stop and turning, and going over a roadway depression the traction control kicks in and really stalls the car from going.

Both need to be fixed, the second one with traction control is really bad. I have it every day pulling out of a street near my home to get on a main road...