Finally a fix from Toyota for Stumble condition (TSB 0062-18)

These TSBs (62 and 58) are the same reflash.

 

So since mine is a 2018, it should have been at 400 before the flash?

 

Both TSB's install the same "software". Get either one and you end up with the same result. Surge was my more pronounced problem, but also had the stumble. Post-tsb the surge is gone, still have the stumble sometimes, but it's less pronounced. And I THINK that over time, the stumble is coming back. I didn't notice it after the TSB. Now I do.

 

No, 6000 or 7000 pre flash. 6100 or 7100 post flash.

 

I do a 34 mile ride to work one way each day. Gradual total elevation change of less than 1000 feet on mostly 45 mph road, with a few short steeper hills. With the '18 Taco, which I drove in ECT mode all the time pre TSB, I would see a trip average of 20 - 21. Tank average of 19.5 - 20. Just got the TSB yesterday so we will see what happens on the commute this week, now that D is usable.
15.5? is the truck lifted with larger tires?

 

Bone stock brother, or I wouldn't even be asking.
maybe there's just a little too much kid left in my right foot..

 

I hate to jump the gun, but I make this drive five days a week. I drove it how I normally do if not a little more aggressive. I always get between 16-16.5 mpg. I hope this is the new trend. I will say though that even if the gas mileage isn't gonna turn out to be any better in the long run, I'm still happy with the driveability improvement.

 

Beleive it or not I got 23 mpg trip average to work this AM, first trip with TSB. Normal county backroad driving, too many speed traps on route to screw around. With OEM flash in ECT mode I was getting 20. Truck runs much better. Still shifts to 6th too often but not too bad and easily fixed with S5.

 

I made my usual weekend trip and last weekend I got 11.4 mpg. Same setup this weekend post TSB netted me 13.4 mpg. I noticed no real difference other than it seemed to avoid the higher gears (S5). I found that odd. I had a pretty bad hesitation on initial throttle, but that is gone now. Pedal definitely feels livelier. I had a mix of 25/75 bad gas to good gas, so I fully expect it to get better once I get a full tank of premium through it as my truck runs better on it.

When I first had the service done I noticed the better pedal immediately and proceeded to do 2 burnouts on the way home. However my truck was empty and I normally have 4-600# of stuff on my truck so it's hard to say that was all due to the tsb. I'll be curious to see how it goes.

 

I read this entire thread and noticed most get the TSB58 update at 20-30k mile check. My truck has less than 600 miles but has the stumble.
Is it best to wait till the truck is a little more broken in?

 

What mpg do you normally get?

Also congrats on having the proper spelling on your first name. It's my son's name as well and people always botch it lol.

 

I got the 62 but do it whenever you can. If you bring it up now, maybe you too will have the update by 20-30k miles lol.

 

No. Get it at your first opportunity.

 

My truck is 2 weeks old with 900 miles. I brought the TSB printout and a pic of the calID display from my scanner. Asked for the TSB0062 update but was told not applicable due to altitude, but no problem getting the TSB0058 which is the same thing. Tech did not test drive, agreed and noted to me it will make a big difference in shifting. I verified new calID with scanner before I left the dealer's lot, same as TSB0062-18. I think some of the pushback guys are getting from some dealers is related to the high altitude statement in the TSB0062, where it is not a criteria in TSB0058.

 

But 0058 is not "available" for '18s.

It amazes me that dealerships think that trucks remain in a specific geographical area for the entirety of their existence.

 

I noticed that. However they want to play the game is fine with me, the important thing is the calID is correct.

 

^That's interesting.
I have no stumble or lag of any type off the line, but my truck will absolutely not peel tires on dry asphalt / pavement.
Bit of a dog off the line, actually, but certainly feels like it's by design.

 

Its funny coming from the Tundra, that would spin the tires easily (too easy) unless you were very careful on the gas. In fact it had a "stumble" as well but in a different way. If it was wet, and you were pulling out on the highway or away from a light with authority in 2WD, with traction control on (default) the rears would start to light up, kicking in traction control, and truck would kill the throttle, basically going dead for a second or two and then try again. You have to be real precise on the gas to avoid this, or just spinning with TC off. This was a '10, maybe different now, but that truck could use some less aggressive pedal mapping.