Unexpected acceleration at stop sign

I have a different theory, the government needed money (after the financial collapse of the time) and TOYOTA being loaded with tons of it got legally robbed.

And that's my story and I'm sticking to it

 

I had two 2.7's. They're certainly reliable and durable

 

I believe OP in that the truck did move forward a little bit, what I don't believe is that he was hard on the brakes. Maybe a light touch felt like he was pressing hard, but as others have said, the brakes are pretty strong.

 

But 15-20 feet? The brakes would have to be completely defective if you were standing on the pedal and the truck still moves that far forward.

I’m always a little suspicious about claims like this from new posters. A rare incident like this is certainly a good reason to report it here, but thankfully it isn’t a pervasive problem.

My 2017 used to lunge in reverse more than any other vehicle I’ve had. Damn near ripped the passenger mirror off on the garage door frame backing it out. I just learned to pay more attention to that bad boy.

Anyway, hopefully this incident is a one off and even the OP will not experience it again. A 15 foot lunge would get you killed on some of the streets around here.

 

I wouldnt drive a truck that did that,Toyota would be getting it back.

 

Indeed, in ANY vehicle the brakes are stronger. I bet you could do that in a hellcat and itd still stop, although I'm sure it would take longer.

 

Complete BS. Have had unintended acceleration when my brake foot also contacted the throttle pedal. Happens more often with European models where the brake and throttle are close together to facilitate heel and toe. Mostly brake and throttle are too far apart on US versions due to stupid feet application.Have had the presence of mind to lift stupid foot and apply to the correct pedal when driving a vehicle with close brake and gas pedals. When you learn to become better drivers this will no longer be a problem for you either. GTS Bruce

 

What is complete BS? Idle speed changing?
I'll be happy to debate you on that, although pushing the wrong pedal is common also.

 

I apologize upfront -- I have not read the entire thread. THERE IS A TSB FOR THIS . I have experienced this for almost the last 2 years. It comes when you touch the steering wheel . Something in the trucks ECM says -hey I need to up the RPM's .Toyota area service rep actually came to us (150 miles) my dealer and tested and discovered it.
WE had 3 other new trucks lined up to compare 2 others did it -one worse and one not as bad.
Bottom line is when you even slightly touch the steering wheel the truck will surge the idle. mine would jump about 200 RPM
He agreed with me but said there was nothing he could do about it. 8-10 months go by and guess what -- Toyota drops a new TSB to fix this.
Again, not all Tacomas do it bad enough that it is noticeable.
Try this go sit in your truck with it in gear -Fwd or REV and turn your wheel -- i'll bet you you will see the jump in RPM. After the new TSB was applied to mine -the jump in rpm was considerably less.
The number is TSB 125-18.

 

You absolutely could. Any street legal car or light truck with operable brakes will do this. The FACTORY engine cannot over power the FACTORY braking system. I emphasize factory because I suppose a Hellephant engine in a Yugo chassis/body could possibly over power the Yugo's braking system.

 

Thanks for posting this.

 

I thought I read somewhere that the computer won't let you power brake in the 3rd gens, no foot on the gas and brake at the same time, computer kicks out the throttle application when the brakes are applied....

 

Yes. It's in the owners manual.

 

So that kind of rules out driver error, right? If he's pushing the gas and brake at the same time, nothing should happen.

 

Thank you ... I will look into that

 

Don't know anything about the TSB. TSBs are issued for non-safety related issues and issues that don't effect all vehicles. So perhaps that's why this TSB seems obscure.

However, being a '19, you would think they would have already tuned that out

 

The TSB came out after many 19's were already built.
On the safety issue --I really think it is a safety concern -I guess Toyota does not think so. Last year on my icey slick concrete driveway the truck actually slipped and skidded when the "surge" occurred for 8 inches or so till I noticed, and applied more pressure to the brakes. I have a tight driveway space and must back either in or out (nowhere to turn around), so I have to be very careful. These "surges" were always a big concern for me when backing. Once when my son-in-law was parking my truck in his aircraft hanger ( I wanted no part of maneuvering the "surger" next to 2million dollar jets)- he parked it and came back saying "what the hell is wrong with your truck"? I said thanks for noticing -you confirmed I am not imagining things. BTW -he is a multi-jet engine certified pilot (3K+ hours) as well as a certified A&P mechanic.
I would like to think that after the Toyota area service rep when back to Kansas City with his laptop full of data from my truck and the 3 others, he rattled some cages of his bosses and the result was this TSB- who knows? All I know is, that it is fixed. If I could say there may be one side effect -- I think the coming to a stop clunk/bump may have gotten slightly worse. If that is the case -so be it, as I would gladly trade away the surge for the slight clunk/bump on coming to a stop.
Good luck to all with this problem -- remember not all trucks show the issue. I am guessing it has something to "too loose" of tolerances with the parts connected to the steering to ECU communication.

 

My 2015 does the same when coming to a stop.Or when stopped already It'll feel like it wants to lunge.Not as bad as he experienced but very noticeable.I think you'll are correct with the compressor kicking on.Because I had my defroster on and had been driving for at least 30mins.

 

My 17’ did something like this yesterday morning. Went to turn it on will still in park. Idle jumped up to about 2500 rpm for about 2 seconds. Never did this before.