engine accelerates on its own

I have a serious problem with my 2011 Tacoma,4 cyl auto,access cab sr5 4x4. it went from an idle to full aceration with my wife pushing the brake peddle to the floor and holding on for dear life,this has happened twice and Toyota says that there is nothing wrong with the truck,has anybody else had this problem with their tacomas,I'd sure love to know. something is wrong with the dam thing,I don't care what Toyota tells me,wife is scared to drive the thing anymore,she was lucky twice,but maybe not a 3rd time if it happens again. please message me if anybody has had the same thing happen to them,thanks

 

x2. The truck's brakes are far more powerful than the 4 cylinder can push. Not only that, but if the truck is moving and there's any brake input whatsoever, throttle automatically goes to idle regardless of accelerator pedal position (post-reflash on the older trucks).

I have had unintended acceleration, but it was the cruise stalk messing up. It thought I was holding it up when I wasn't; it was a rather calm fix too. Touch the brake.

Tell her if it happens again, and just in case the built-in safeties aren't working right, don't panic; take foot off pedal, bump shifter into neutral, and stop the truck.

This has been a basic skill for all automobiles ever. Yes electronic throttles can mess up, albeit super rarely. Throttle cables would stick open too from time to time, and far more often than electronic throttles at that once they had a few miles.

 

It's not a coincidence that it hasn't happened to you.

As already said, even if true the 2.7L is not going to overcome full braking.

 

NUMBER1,I don't drive and I watched the truck going out the drive way with the back tires kicking up rocks and the front tires locked skidding down the drive way,so you don't know what the hell you are talking about,yeah the service manager told me that when the brake is touched,the acceleration stops,bull shit and I suggest you keep your coments to your self since you have no idea what you are talking about and it seems that we don't have the only Tacoma that this has happened to,read the forms

 

wasn't pushing the brakes,was pushing the gas peddle?,are you nuts or just a know it all who knows nothing,I watched the dam truck skidding down the driveway while the rear tires were spewing rocks at me and the BRAKE lights were on btw and IT IS TRUE

 

Yeah guys! SRSLY. Read the forms! Nobody here knows the first thing about owning a Taco.

 

What people here are saying is the hydraulic brake system is much more powerful than the power the engine puts out to the tires. Even with the V6, the brakes will overpower the motor. Even if the brake override isn't working, the truck would come to a stop IF the brakes are being applied to their fullest ability. Another words, if your smashing the brakes and the truck engine is accelerating, the brakes will win.

The only reason any vehicle would move forward with the brakes applied would be if the brakes weren't being pressed hard enough. The brake lights will come on with the slightest pressure to the pedal. But if you're not pressing hard enough, than there won't be enough hydraulic pressure to the brake pads to cause enough friction to stop the vehicle.

 

Directly from NASAs web site on Toyota unintended acceleration.


http://www.nasa.gov/topics/nasalife/features/nesc-toyota-study.html

"NASA found no evidence that a malfunction in electronics caused large unintended accelerations," said Michael Kirsch, principal engineer and team lead of the study from the NASA Engineering and Safety Center (NESC) based at NASA's Langley Research Center in Hampton, Va.

 

You came to the wrong forms if you expect people to keep coments to them self.

 

I LOL'd.



Settle down. There was an unintended acceleration problem that cost Toyota millions of dollars in business almost a decade ago that was actually due to gas pedals getting stuck on floor mats. I'm sure OP heard about it unless he lives without any contact with the outside world. Anyways, Toyota installed an electric cutoff that puts the throttle to neutral any time the brakes are depressed. This is why you can't do a brake stand in a Tacoma or any other Toyota, not that you should anyways. People are saying your wife hit the skinny pedal and not the brake because that is the most likely explanation. Otherwise something is happening with your 2011 Toyota Tacoma that should not be electronically possible.

That or you are a troll from another GM forum hoping to kick up an old issue. There's been a lot of that on here too.

If any unintended acceleration occurs, as others have mentioned, THROW THE TRUCK IN NEUTRAL. That will solve the problem since no matter how messed up you think the truck is the transmission will not translate the engine rev's to the rear wheels.

 

As a fellow 2.7 auto owner, I find this incredibly hard to believe. That said, if the dealer can't find a problem with it, let corporate have it. Surely they're interested in a runaway vehicle problem. If this is legit, driving the truck after it happened the first time was a poor decision, let alone continuing to drive it after a second occurrence.

Park it at a dealer and call corporate. They can send an engineer to look at it and in the meantime you won't kill yourself or someone else.

Or this whole thing is not legit, which is my primary suspicion. Good luck.

 

did you come to this forum

asking for opinions/ thoughts

then call people stupid for their opinions/thoughts

then tell people

on this forum

to go read forums?

FWIW

all the "unintended acceleration" business was found to be driver error
so nobody has actually had this problem
you'd be the first

 

Oh, this fun! It was getting boring on here for a while. BTW, how can I get one of those little popcorn eating thingies to show up on my posts?

 

when you're making a post, you can go to "advanced">"more" in the smilies selection on the right of the text box- all the emoticons are there

or, type : popcorn : without the spaces

: kona : is the best emoticon there is though

 

Hmmmm

 

Oh, fun! I'll have to try those out. Thanks. Now, let's get back to the topic at hand>

 

I've been driving a 2000 Tacoma for about a year and a half. Yesterday, I stopped at a parking lot exit and was holding the brake. The engine accelerated and the brakes prevented the vehicle from moving forward. I put the vehicle in neutral and took my foot off the brake. The engine sounded like it completely accelerated so I turned it off. I know the floor mat did not cause the problem and I know I was not pushing the accelerator. Without any further problem and without changing anything, I started the engine and drove to the Toyota dealership. They checked and couldn't find anything wrong. After reading online about this problem I am back at the dealership now having a new throttle control valve installed. Don't know this will solve this problem but might solve some other problems a new valve has solved.

 

Correction - throttle position sensor. Sorry.

 

Let me fix that for you, it's a 4cyl after all.....

Disclaimer: I'm allowed to make fun of the 4cyl, I own one and love it even though it is a bit gutless.