Engine Hesitation

[Terry Wells]

Has anyone out there had problems with the engine hesitating? My Genesis seems to hesitate between 25-40mph as while I am driving in automatic. The car almost acts as if it wants me to shift gears manually. Also at the same speeds the car does not coast very well, it has a sort of drag feel that slow the car down, is this some type of safety feature?

 

[ctrcbob]

The "drag feel" is nothing more than the transmission being in, and STAYING in one of the lower gears. I'm sure your Aisin Transmission was designed that way. I know that my ZF Transmission does this.

Most automatic transmissions always want to go to the highest gear it can find, when you are coasting or slowing down. (unlike a manual transmission which is in the gear you want, not the gear the automatic wants - this is why you have better control of a manual car than an automatic car).

Can't answer about your hesitation.

 

[Mark_888]

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 by far the best transmission I have ever driven, which is no surprise since Aisin is 52% owned by Toyota and are used in some Lexus and Toyota vehicles (plus used by 35 auto manufacturers around the world with a market share of 16.4% of the global market for automatics).

 

[zoeldar]

I've been lurking for awhile, now time to join in...my 3.6 has 37K in 13 months (massive highway commuting). Noticed some hesitation over several days...then I had a surprise while on the highway, stepped on the gas and nothing happened...slowed down and exited, and once on a sidestreet, the car would not exceed 20 mph...pulled over, debated...check engine light was on, nothing else. Decided to reboot - shutoff for 2 min, then restarted...light stayed on, but car ran okay. Dealer studied and concluded that E Traction Control and Throttle had dropped memory for whatever reason, reloaded the program, and all was well. For about two months...then I noticed some hesitation again...and last week the car again lost all throttle response. I stopped, turned it off, and then restarted, and it drove fine...engine even went out later on...brought into the dealer, and now they are replacing the whole throttle module. Beware, this may a more common issue...

Z

 

[ilovemygenesis]

I've been lurking for awhile, now time to join in...my 3.6 has 37K in 13 months (massive highway commuting). Noticed some hesitation over several days...then I had a surprise while on the highway, stepped on the gas and nothing happened...slowed down and exited, and once on a sidestreet, the car would not exceed 20 mph...pulled over, debated...check engine light was on, nothing else. Decided to reboot - shutoff for 2 min, then restarted...light stayed on, but car ran okay. Dealer studied and concluded that E Traction Control and Throttle had dropped memory for whatever reason, reloaded the program, and all was well. For about two months...then I noticed some hesitation again...and last week the car again lost all throttle response. I stopped, turned it off, and then restarted, and it drove fine...engine even went out later on...brought into the dealer, and now they are replacing the whole throttle module. Beware, this may a more common issue...

Z

Thanks for the heads up, i put a lot of miles on my car as well and i experience the hesitation after only 8K. I will certainly look out for the warning signs you described.

 

[TomT]

Zoeldar, I've experienced a similar situation. Have 33,000 miles after 11 months. Also long highway commute. Did the last repair fix the problem?

 

[zoeldar]

Just got my 3.6 back; they replaced the whole throttle control module. Seems to be running fine now...will see if the problem is totally resolved over time. Part was on backorder (took 4 days)...hmmm, could be either a) this is a more common problem than Hyundai wants to let on...or b) they really stressed to insure it would be fixed. May never know...

Z

 

[Mark_888]

Just got my 3.6 back; they replaced the whole throttle control module. Seems to be running fine now...will see if the problem is totally resolved over time. Part was on backorder (took 4 days)...hmmm, could be either a) this is a more common problem than Hyundai wants to let on...or b) they really stressed to insure it would be fixed. May never know...

Z

How about "they needed to import the part from Korea."

I don't think that HMA keeps every single part for the Genesis in stock in the USA.

 

[Sayantsi]

How about "they needed to import the part from Korea."

I don't think that HMA keeps every single part for the Genesis in stock in the USA.

This would be my bet - keep us informed about the throttle now so we know if this worked.

 

[thomas.cena09]

Its an often occurring problem for your car, which will cause problems for you. You get known with the solution of this problem which you can find in several manuals or on websites.

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[jwaters943]

In 17 months of ownership I haven't noticed any significant hesitation w/ the V6. The only thing negative I can say about the powertrain response/performance is that in certain situations the transmission seems a bit reluctant to downshift. It usually happens at lower speeds if I take off slowly from a stop and then want to accelerate more quickly. Other than that, I love the V6/Aisin combination. They're very well mated.

 

[gerpommy]

I wanted to pick up on this thread and let all you guys know that I had the same hesitation problem for @ 2 months. I also thought it was the trans not being able to downshift when the engine needed a lower gear.

Finally just diagnosed and repaired today [6-18-10]- as accelerator sensor and now all is again right with the Genesis.

Thanks to those who posted this problems as my copies of the forums postings on this issue probably was a great assist with diagnosing this problem- a problem that did not cause “check engine” lite on or deliver a malfunction code.

 

[Winelover6]

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.

 

[scottdk]

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.

Nothings wrong, just different from what you're used to. drive-by-wire system which the Genesis and many other cars have act the way you are discribing. There is an old thread you can dig up (other than this one) by using the search function.

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

The thread indicates for the V8, but it is worth the read for learning purposes.

 

[PMCErnie]

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.

Something is wrong unless you are totally flooring the pedal. No need to do that.

 

[Mark_888]

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.

Try Viagra. If you prefer a bath instead of a shower, try Cialis.

 

[roblaw]

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.

 

[Winelover6]

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.

 

[GennyFromDaBlock]

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...

 

[EXBMWGUY]

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.