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While checking a different hunch by @Hodna and driving in sport mode, I identified a way to recreate the issue every time. This should help me greatly in communicating the issue to the dealer.

The issue is actually the gear shift between 1st and 2nd gear, but only when the pressure on the accelerator is released briefly and then pressed again. i.e. if you keep steady pressure on the pedal while shifting from 1st to 2nd, there is no issue. If, however, you start to accelerate in 1st, then let off the gas pedal, shift to 2nd and hit the pedal again there is a significant lag time before the throttle responds.

Once I discovered this sequence in sport mode (because who wouldn't let off the gas while switching gears if you were driving a standard?), I changed back to regular Drive mode and continued to create this issue by letting off the accelerator briefly right after starting from a stop, around 5mph or so, and then trying to punch the gas again.

I'm so excited to at least be able to recreate the issue on demand, and appreciate you all's advice and help it took to reach this point. Have the appointment at the dealer for next week so will let them know how to create the issue and see what they say.
Thanks I am having this exact same issue, as well as hard shifting between 1-2 when things are cold. Driving me nuts because I love everything else about the call (well, except the push-button gear selectors). Haven't wanted to deal with the run-around from the dealer on this yet, but it's getting to the point where I think I need to. The long lag when you hit the accelerator hard when rolling slowly could definitely cause an accident. I have come to expect the lag and try to avoid situations that cause it, but every time my wife drives the car with the kids it makes me nervous.
 

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You’d have to analyze the machined hardware and it’s response timing with when the TCU commands a response. There is variability in manufacture. These are not built under absolute precision. I’m hoping the software helps but it didn’t for many.
 

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I get noticeable lag on Econ mode. Otherwise van is pretty responsive. There’s something about the 1st gear. In manual if you start on 2nd the acceleration is much better overall.


swap out all the 9s for the 10 speed.
believe the mount points on the engine are completely different. Forget electrical and ecu etc.
 

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So, after driving for a few days, the software update didn't solve the issue. Haven't decided what next to do about it, but doesn't seem like I have many options...
 

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So, after driving for a few days, the software update didn't solve the issue. Haven't decided what next to do about it, but doesn't seem like I have many options...
My 2019 EX-L Odyssey is currently at the dealership. They just called and said their technician "has been researching the problem" and it seems that a throttle body cleaning "might help". They wanted to charge me $189 for this since it's not covered under the warranty, neither the original or the extended warranty we purchased. She had called Honda Care and they said it's a "maintenance issue" so they wouldn't cover it. My van is garage-kept and only has 11k miles on it! I told them forget it.

My cousin had the same exact model as ours and had the jerky shifting issue and her dealership did some sort of software update, which she said helped a little bit but didn't get rid of the issue. They traded theirs in. We may end up doing the same, sadly. I love my van, other than that one issue. :-(
 

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Posting from my survey thread:
It’s a mix bag of experience for everyone. What I noticed is that shifting in steady acceleration has improved a lot as in no jerking or clicks. The key is you put your foot down and keep it steady. Any fluctuations at the accelerator the AT won’t know what to do. Down shifts are not as smooth as up shift. I do sometime hear the dog clutch 4-5th and 7-8th (more on 4-5th aka low speed rolling in the neighborhood) The real culprit is at the mechanical design of this thing.

Most people complain about slow speed driving in the 30-45mph range.

This might be placebo or I’m just crazy. During your 500mile learning period drive the van with Econ off and drive it how you expect to accelerate and such. After that learning takes place and complete go back to driving gentle and with Econ. Feel like this made a big difference in my van. 🤷‍♂️ Goal is longevity. As long as it doesn’t completely poop out I am ok with it. I’ve done 2 cross country trips and had no issues got great mpg at 29.3.
All best. And keep us posted.
 
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My 2019 EX-L Odyssey is currently at the dealership. They just called and said their technician "has been researching the problem" and it seems that a throttle body cleaning "might help". They wanted to charge me $189 for this since it's not covered under the warranty, neither the original or the extended warranty we purchased. She had called Honda Care and they said it's a "maintenance issue" so they wouldn't cover it. My van is garage-kept and only has 11k miles on it! I told them forget it.

My cousin had the same exact model as ours and had the jerky shifting issue and her dealership did some sort of software update, which she said helped a little bit but didn't get rid of the issue. They traded theirs in. We may end up doing the same, sadly. I love my van, other than that one issue. :-(
What did she get to replace it? What are you considering? My 2018 has been nothing but a headache and I’m about done.
 

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My 2019 EX-L Odyssey is currently at the dealership. They just called and said their technician "has been researching the problem" and it seems that a throttle body cleaning "might help". They wanted to charge me $189 for this since it's not covered under the warranty, neither the original or the extended warranty we purchased. She had called Honda Care and they said it's a "maintenance issue" so they wouldn't cover it. My van is garage-kept and only has 11k miles on it! I told them forget it.

My cousin had the same exact model as ours and had the jerky shifting issue and her dealership did some sort of software update, which she said helped a little bit but didn't get rid of the issue. They traded theirs in. We may end up doing the same, sadly. I love my van, other than that one issue. :-(
Asking you to pay for 'Throttle body cleaning' and that it would cost almost $200 is asking you to turn around, pull your pants down and bend over. I can tell you there is no such thing as a Throttle Body cleaning with these vehicles.
When a dealership starts to sell you BS like this, that is the indicator that they are not equipped to do their diligence. Good thing that you said NO.

Getting the ATF sample out of the level check bolt and sending that to someone like BlackStone Labs to get assessed. They can tell you if the fluid is beyond service life or is nearing it. A small price to pay, before jumping into a full on ATF change from a dealership. If the fluid is fine, then it would be onto a software update and assessing the drive experience.
 
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Hi everyone. I was all set to buy a CPO 2018 or 2019 EX-L, or Touring/Elite - and now I guess I won't. :-( Just checking if the situation is still the same - no known resolution? Also - if I test drive one, and the behavior to me seems OK, does that mean that particular van is "OK", or will it get worse later? I have test driven 2, and while I felt the part-throttle launches hesitated a bit due to gear selection, it wasn't AWFUL - but will it get worse? Thanks
 

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Hi everyone. I was all set to buy a CPO 2018 or 2019 EX-L, or Touring/Elite - and now I guess I won't. :-( Just checking if the situation is still the same - no known resolution? Also - if I test drive one, and the behavior to me seems OK, does that mean that particular van is "OK", or will it get worse later? I have test driven 2, and while I felt the part-throttle launches hesitated a bit due to gear selection, it wasn't AWFUL - but will it get worse? Thanks
and... is it safe to buy a CPO Elite/Touring?
 

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Thanks. I'm wondering though, does this get worse over time, or if I test drive one and I like is it, does that mean it's OK???
I’m my opinion it’s really not as bad as it sounds. Drive it and just pay attention for anything strange. The 10 speed has been really reliable and I wouldn’t worry about it. The 9 speed is more of an annoyance to some for the way it shifts but it’s not like they blow up all the time.

Yes there will be some that fail but this is true with any vehicle or brand.
 

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I’m my opinion it’s really not as bad as it sounds. Drive it and just pay attention for anything strange. The 10 speed has been really reliable and I wouldn’t worry about it. The 9 speed is more of an annoyance to some for the way it shifts but it’s not like they blow up all the time.

Yes there will be some that fail but this is true with any vehicle or brand.
for the 9 speed - if I'm OK with the way it shifts, is it likely to stay that way too? or is it just lunacy to buy one now?
 

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In reality it should be fine. Yes there a some that fail. The majority of issues is the shift quality that some people hate but it’s more of the type and design of the transmission that causes the shifts and not really a failure of the transmission. If it was me I would go with the 10 speed just because it shifts better.
 

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In reality it should be fine. Yes there a some that fail. The majority of issues is the shift quality that some people hate but it’s more of the type and design of the transmission that causes the shifts and not really a failure of the transmission. If it was me I would go with the 10 speed just because it shifts better.
Agreed. I sometimes wonder about how my 9-speed transmission "learned my driving habits." During this period, I always drove with the ECON mode on, which I think is a laughable feature on the Ody. To achieve good gas mileage, you don't need it. You just have to know how to drive properly. The rough shifting may have been because of the way the transmission learned about power distribution though the ECON mode. I sometimes wonder about asking my dealer to reset the software so it can relearn my driving habits with the stupid ECON mode off.
 

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I’ve never used my Econ mode and drive my 2019 EX-L both city and highway. Gas mileage is pretty consistent at around 24-28 mpg with an occasional 29 mpg hwy. Transmission seems to be doing fine shifting, and I do like to stretch the legs on the 6 cylinder (WOT) once in awhile. That’s wide open throttle when the road and safety permit, mostly when getting on an interstate hwy.

Currently 31k on the odometer, hope to have many more issue free miles.
 

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Thanks for the note, Caveman49. I'm on the same page with you. Your mileage numbers are good and typical of what I'm getting. I don't think we can expect much more from a 4,500 pound car with a large 6 in it. I've never seen any great difference with ECON mode running. According to my service manager, ECON cuts out at highway speeds, so VCM can take over. In town, ECON makes no difference, so long as you don't jack rabbit everywhere.
 
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