Fix for mt stumble condition dicussion

Yup. I've become used to the engine braking including being aware should it suddenly give me less braking when coasting at steady RPMs. But, an improvement would be nice.

Thanks for having my back!

Yeah. If you see a great post with details, please feel free to tag me.

 

@MOC221_ I just LoL'ed looking at the MT thread OP.

 

I'm new to the forum, and I joined to find an answer to this m/t stumble issue. The last post was almost 2 years ago. Is there a solution yet? I just dropped my taco off at the dealership for the recent frame rust recall, and I wanted them to do the update at the same time.

 

There is a new TSB out for the 2016 and 2017 MTs. TSB-0043-20 that will update the ECU to 04B14. It is mainly for a MIL / CEL for the throttle body limp mode, but you might get them to apply it?

Otherwise, you could flash it yourself:
https://www.tacomaworld.com/threads/software-update-for-the-manual.562550/

 

So is this something the dealership should do no questions asked, or would they have to replicate it? Cause my dealership seems like they are going to fight me on it.

 

It really depends on the shop and your luck. I have a dealer that seems easy to work with, but I had been in those arguments before. I just took the easy route and flashed it myself. It is a 10min process.

 

Ok thanks. I'll need to look into that if they can't replicate it.

 

Take a copy of the TSB with you:

If you need the TSB CUW file, it is further down on that same page.

 

I've never had this happen. I have 81k miles with original spark plugs. I live at sea level and run 90 octane non-ethanol gas.

 

Florida has a bit different weather than Alberta. Edmonton sits 645m or 2200' above sea level.

 

I'm actually happy for you, no bullshit.
Not everyone has been as lucky though.

 

I'm bumping this because I've been looking for the cause and possible fixes for the last couple weeks. My '22 has had this issue since I picked it up from the dealer. It's now at 800 miles and the problem doesn't seem to be going away. I've driven an '18 OR MT and it didn't have this issue. Im figuring since it's a '22 the ecu would be the latest version and possibly a tune will eliminate the stumbling. Does anyone have anymore info on this?

 

With every manual transmission I've had (automobiles and motorcycles) if I apply too much throttle at too low RPM the engine will lurch, stumble, hesitate, lug, bog, whatever you want to call it. I thought his was a very well known phenomena. It is caused by driver error. Rev it up if you want to accelerate hard; otherwise keep the throttle in check. Practice makes perfect.

 

I've been driving manual transmission cars and trucks for 13 years. I know how it feels "lugging" the engine. This feels like a misfire or something to the point it won't try to accelerate at all. It even does it in 1st at 2000+ rpm. It doesn't happen all the time. And it even happens with different amounts of throttle input. Never happens past 3500rpm after the "VTEC" feeling. Some people in this thread explained the feeling pretty well.

 

You sound like a candidate for the Accumulator Delete Mod...it does help what you are experiencing but the hard reality is...it doesn't eliminate it completely IMHO. I've found that meteorogical conditions are the bare assed culprits. The Clutch Accumulator amplifies it...

Just my experience

 

I was wondering the same about the accumulator making it worse. I plan on doing the delete after winter. This is my first vehicle that's had one and I don't care for the clutch feel. Also doesn't help that it's hardly broken in yet. I have definitely noticed it's better the last few days so I'm going to just keep putting the miles on and see if it smoothens out more.

 

Swing over here...

https://www.tacomaworld.com/threads...all-generations-welcome.406844/#post-11415887

 

Unplug your ACIS motor and report back!

 

Agreed.
I've been driving stick for nearly 40 years and also know the difference between lugging the engine and how these trucks can "stutter" under various conditions. My '16 did it, so does my '19. Stock or tuned, doesn't matter in my case.
Not ALL trucks do it, that's the tricky part of this discussion. Some will assume since theirs does not, it must be user error for us "whiners".

 

Yes that seems to be the issue. I've driven two other 3rd gen Tacomas and neither of them did it. It's like TeecoTaco said it seems the weather has a part in this. On my way to work one morning recently it was about 20F and it stumbled a couple times. Later that day it warmed up to around 40F or so and during about 45 minutes of city driving it didn't do it one time.

I am definitely going to be looking into this. Thank you.