TRD OR AC 4x4 hesitation when pulling out in traffic on full accelleration

Were you making a right or left turn? Mine does not do it either if i am headed straight. Let me know and thanks for the input.

 

My tires will not chirp. Maybe if the roads were wet from the rain, or if there is a little bit of gravel under them... haven't tried either of those conditions yet. I know, it's a truck. Only truck I've had or driven that won't spin the wheels though.

Understand the pulling out from a stop thing (I've had the issue). Also a tremendous, yet intermittent lag sometimes when passing.

 

These comments make me think the automatic transmission is failing to quickly shift. You punch it and the transmission is struggling to shift into that lower gear... if the RPMs raise and you aren't accelerating the transmission is without question not fully engaged in a gear. Think about the lag people experience when shifting from park to drive, drive to reverse, etc and then apply that into your scenario... sound familiar? Once it finally gets in gear the revs are already high so it launches.

My 2 cents. I only read the first 2 pages. Perhaps this has already been discussed in later pages.

 

I am tempted to pull this 6spd Auto out and replace it with a damn OG TH350.

 

This is taking place from a stop... The truck should already be in the appropriate gear.

 

And a 350 Crate motor. MPG's would probably be better too...

 

I have experienced something similar, and in my case it happens when I am turning left onto a busy 4-lane road with a 45mph speed limit (which means 55+ in Texas). It accelerates fine to get across the 2 lanes closest to me, but when I turn left after crossing the median, and punch it, it just sits there for a second before it suddenly goes like crazy up to 3-4000 rpm. My assumption has always been that it was a problem with the computer trying to upshift too quickly. When I am crossing the 1st two lanes under load, it stays in a lower gear, but as soon as I lift off the pedal to turn left, it senses the lighter load, assumes I have reached the speed I want and upshifts. When I get back into the gas, it is in the wrong gear, has to sit and think about whether it can generate enough torque, before it finally decides to downshift. Meanwhile, my foot has continued to push the pedal further and further down while my nethers pucker up watching the cement mixer bearing down on me. Finally, the downshift happens and the truck launches like a Taco Bell burrito after a hard night of drinking.

I haven't tried it with the ECT on, but I bet it will help, since the truck isn't so quick to upshift with ECT engaged.

 

That could definitely explain it from a crawl or from a 'start and then let off' situation like when i turn left out of my subdivision on to the divided hwy. Would make a lot of sense. I am still really puzzled about why it happens turning right from basically a dead stop at other times.

Thanks for your input!

 

I was able to get both to break free after disabling traction control and turning hard right out of stop sign. But it was pretty weak.

 

Could be a torque converter issue. You aren't really in 1st until it locks up which doesn't happen until you are rolling out. The fact that RPMs are raising and you aren't accelerating indicates a transmission issue to me. It's not properly in gear when that happens whether it be because of a delayed shift or malfunctioning torque converter. I suppose it's possible the ecu is misrepresenting RPMs on the tach and the engine isn't actually revving but I imagine you'd be able to listen and hear if the engine is actually revving or not.

 

Well, the posters speculating about traction control have me wondering as well. When I have it happen, it is usually when I am turning left into the near lane of the two lanes going right to left. Turning into the far lane doesn't seem as difficult (but also may just be because I can do that when traffic is lighter and I am not trying to immediately accelerate hard). The way the median is setup there makes for a pretty sharp turn to stay in the left lane, especially since I have a DCLB. I just assumed I was letting off the gas a little more for the tighter turn and encouraging the upshift. But now, I am wondering if the sharper turn is causing the traction control system to sense a disparity between the speed of the two rear wheels and cutting the power to avoid spinning them. That would explain it happening if you were making a sharp right turn out of your subdivision as well. I may go out and try it a few times with ECT on and then a few times with traction control off over the next couple of weeks and see if I can see a difference.

 

In my particular case, there are no raised RPM's during the lag period, it's like the f*cker is dead. RPM's only raise right before i sh*t all over myself and it finally takes off.

 

After 22K miles, I am now most positive that the traction control was not meant to control the raging power of the gutless wonder 3.5 on dry pavement from a standstill.... FACT!

 

When the TSB came out for the tranny, were the dealers supposed to automatically update all the Tacomas? Salesman I spoke with said that only do it if you come to them complaining of the problem.

 

It seems like the torque converter is still locked up when you rolling to a stop or going slow in traffic... mines does it in traffic in this situation. Also I do think the atkinson cycle issue could also have something to do with how fast it changes over to give it more supposed power.
Overall I'm disappointed in this engine and tranny. I guess I should have got a full size if I wanted real power.

 

I had to ask at my current servicing dealer. That was after my truck sat in the shop for three days at another dealer while they scratched their heads and told me mine was normal and that they had had no other owners complain about any of the tranny issues. That was before the TSB was released.

 

Coming from a full size Chevy that did the same thing cause of electronic transmissions. The ones that did it the least were the F150's.

Basically this truck has power but it's specific about where you can make it, the Chevy did the same, unless you hit the tow/haul mode, then it was a beast.

If you don't need the extra towing and hauling and interior room...which I no longer do, the size and agility of a smaller truck is so much nicer. It's just a matter of opinion.

However, I felt as you did with my 2011 Tacoma, and that's why I bought a V8. I got that out of my system and now we are back here where I truly am happy to be. If you feel you need, you really need to try it, so you can know for sure. Sounds like you're on the fence, and it truly sucked to be there...I was there a few years back.

 

Also, regarding TSBs, the dealer won't do a TSB automatically. That's a recall. The TSBs are like a tool they can use to address a specific issue. If you're not complaining about the issue, they aren't going to do it.

 

Alright thanks!

 

Yeah I would say about two seconds, it did not take off like a bat out of hell but power did resume after the pause. Love my truck so far but this one thing made me think WT? $.02