2021 Acura RDX stalls

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Old 04-06-2021 | 08:39 PM
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2021 Acura RDX stalls

Am I the only one with this issue?
when accelerating slowly, my RDX shawd tech stalls intermittently. Seems to be when shifting through the lower gears.
Old 04-07-2021 | 06:31 AM
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There was an issue with limp-mode and stalling in the rain under acceleration. There have not been any posts here that I have seen with the problem you describe.

Get thee to a dealer.
Old 04-07-2021 | 03:41 PM
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Accelerating slowly or normally? Either way, I'd be surprised I'd it didn't leave behind some OBD codes.

Limp mode usually occurs after an extremely hard acceleration, like getting the RPM near red line. It's never happened to me but I hear it leaves no codes.

Old 04-07-2021 | 04:45 PM
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Originally Posted by wlcdrifter
Am I the only one with this issue?
when accelerating slowly, my RDX shawd tech stalls intermittently. Seems to be when shifting through the lower gears.
what is your definition of stalling?
Take a video of what it's doing...
Old 04-07-2021 | 07:46 PM
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Originally Posted by justnspace
what is your definition of stalling?
Take a video of what it's doing...
It didn't occur to me to even ask that. Stalling means engine shutdown requiring restart. I've never known it to mean anything else.
Old 04-07-2021 | 10:55 PM
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Originally Posted by NooYawkuh
It didn't occur to me to even ask that. Stalling means engine shutdown requiring restart. I've never known it to mean anything else.
Careful! I worked in the industry for decades and I long ago learned to never assume the speaker's meaning of a term was the same as my meaning or any technically correct meaning!
Never assume!

BTW: Just because the MIL did not illuminate does not necessarily mean that there is not a code set in the system. There are very strict rules about what will turn on the MIL, some codes do not cause it to illuminate on a first failure and then clear on the next "trip" if they "pass" making it more difficult to find.
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Old 04-08-2021 | 06:16 AM
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Originally Posted by NooYawkuh
It didn't occur to me to even ask that. Stalling means engine shutdown requiring restart. I've never known it to mean anything else.
his description of a stall doesn't match yours, thus why I asked.

Hopefully we can see it in action and figure out what's going on
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NooYawkuh (04-08-2021)
Old 04-13-2021 | 11:16 PM
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It is not a result of hard acceleration. The opposite would be more true. With my foot on the gas pedal and accelerating slowly, as it shifts through one of the lower gears it’s as if the engine stops, then a second or two later, it takes off.
I have put it in S mode where you shift manually with paddle shifters and it never “stalls”.
My suspicion is that there is logic that causes the engine to stall very shortly during shifts and that logic may have an issue in my car.
Old 04-14-2021 | 09:05 PM
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take a video of it...
what you are describing isnt considered stalling.

can you see the slight pause on the tach? meaning, will the RPMs hang or dip?
why not just take it to the dealer, as we have no clue what you're talking about without seeing or feeling the problem

Last edited by justnspace; 04-14-2021 at 09:07 PM.
Old 04-14-2021 | 10:16 PM
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I’ll take it to my dealer when I get back home in a few weeks.
I didn’t realize stall was such a cryptic term. It’s as if you shut off the engine for a second or two and then it takes off again.
it’s rather sudden and totally random. I will try to take note of the tach next time it happens. Happened twice today. Once accelerating straight from a stop. Certainly not hard acceleration. It’s the kind of thing that leads to getting rear ended.
Old 04-15-2021 | 07:46 AM
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Wait. Is it the Auto Stop Start that you are seeing?
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Old 04-15-2021 | 08:28 AM
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I'm curious if this is a reference to the way the RDX reduces power during shifts, which when I first got the vehicle felt a little extreme and cumbersome especially with the 2-3 shifts required to cross an intersection at low power. Not sure I'd go so far as to call it a stall but it definitely stops forward power momentarily during shifts at low power. Giving it some gas smooths things out in my experience.
Old 04-15-2021 | 12:09 PM
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Originally Posted by NBPDC505
I'm curious if this is a reference to the way the RDX reduces power during shifts, which when I first got the vehicle felt a little extreme and cumbersome especially with the 2-3 shifts required to cross an intersection at low power. Not sure I'd go so far as to call it a stall but it definitely stops forward power momentarily during shifts at low power. Giving it some gas smooths things out in my experience.
Yes, it is a slight hesitation..it happens to me occasionally when I start to accelerate quickly through a corner after braking hard. My 2019 done it since it new.
Old 04-15-2021 | 08:35 PM
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Originally Posted by wlcdrifter
It is not a result of hard acceleration. The opposite would be more true. With my foot on the gas pedal and accelerating slowly, as it shifts through one of the lower gears it’s as if the engine stops, then a second or two later, it takes off.
I have put it in S mode where you shift manually with paddle shifters and it never “stalls”.
My suspicion is that there is logic that causes the engine to stall very shortly during shifts and that logic may have an issue in my car.
What you’re describing is not normal. If you’re at a stop and firmly depress the brake, Auto Stop will turn the engine off, but it will come back on if you lift off the brake or jiggle the steering wheel. The auto stop should not activate if you are cruising at low RPM, no matter the speed > 0.

That said; turn off the auto stop and see how that affects the issues. That may help the dealer diagnose the issue.
Old 04-16-2021 | 06:03 PM
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Always driving in Sport mode has eliminated most of the hesitation when accelerating in our 2019.
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Old 04-16-2021 | 11:06 PM
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Originally Posted by Madd Dog
Wait. Is it the Auto Stop Start that you are seeing?
JEEZ!! Could that be it? I think this is the same guy who may not have known you have to step on the brake to shift. These are features, not bugs.

RTFM

Acura - Defective by design
Old 04-18-2021 | 05:26 AM
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Originally Posted by B25Nut
Always driving in Sport mode has eliminated most of the hesitation when accelerating in our 2019.
Better yet is Sport + Sequential shift mode. Then no hesitation when you punch it.
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