Shuttering/Reverse Issues

Been trying to diagnose a couple issues I’ve had with my truck, and having difficulty pinpointing the the root cause, I have a 2011 5.7L Rock Warrior.

There’s a couple potential causes I can think of, but still stuck.

1- Not paying attention, I was going to do an oil change, and accidentally drained the transmission fluid. I did my best to match and replace exactly how much I had drained. I talked to a tech at Toyota who was not very concerned about it being exact, and indicated as long as I was pretty close should be good.
2- I put a bit larger tires on recently, going from a 33” to a 34”.

Jumping ahead, I paid very close attention to the shifting in the transmission to see if it seemed by fluid replacement caused any issues. The truck was driving fine, shifted into 4x4 etc, no issues. A week or so after replacing the tires, I started to notice a couple things. When trying to reverse, the truck would shutter rather significantly. When I give it gas, it revs up quite a bit and doesn’t seem to reverse properly and at a higher rate of speed.

I took it into the shop, they said that my tranny fluid was actually a little bit high, but ultimately everything seemed good.

Issues have seemed to progress.
When driving forward at a slower rate of speed, and accelerating into turns, I also feel a bit of shuttering, and the shifting is a little rough. Seems to be much better at higher speeds.

Very recently, when starting the car, the check engine/traction control light come on, along w/ the 4lo blinking. When these lights are on, and car in automatic, acceleration is very slow. I tried switching to sport mode, and it seemed to perform more like normal.

I read about the change in tires causing some of these issues, so just tonight did a zero point calibration. Didn’t have time to drive much, but was still seeing the same issues with reverse. Turning off the traction control does seem to help a bit, leading me to believe it may
not be a mechanical issue with the tranny.

I tend to think it is some software issue, but what do I know. Racking my brain and the internet, appreciate any input.

 

What kind or brand of ATF did you use to replace the trans fluid?
Also make sure no sensors were damaged when they changed the tires.

Not saying that's what's causing your problems but something to check.
I'm not familiar with big tire side effects or required adjustments but lots of threads if you search.

btw, I got some or all of those blinking lights you talked about ... Was told it's due to a weak battery!
They went away after battery was charged.

 

I put in factory fluid. Not sure what the shop used to top off. Good point about the sensors. Place I had them done is usually pretty reliable. Not quite sure how to confirm if sensors are damaged aside from replacing.

 

I would check for any engine/OBD codes. You can take it to any auto parts store and they can check.

 

Ran the OBD, it’s showing 2 codes: P0894 “Transmission Component Slipping” and P2714 “Pressure Control Solenoid D Performance or Stuck Off.” Hoping this is something smaller than a full transmission rebuild/replace.

 

If a transmission or clutch component is continuously "slipping", it can't be good. Something will overheat ...

Search this site or Google the code or ask the dealer to see what's causing it.

 

How many miles are on your truck? You may just be dealing with dirty fluid.

 

129K. Thought about that, but I put new fluid in when I accidentally drained it (see beginning of thread). Though maybe I contaminated it a bit? I bought this truck used at 93K miles. Has been super reliable other than this, but not sure what care/how it was used by previous owners.

 

So, on my 2015 SR regular non-TRD, I have the above issues to a T. I JUST bought the thing for my wife, and went on a long road trip with no real issues. Trans seemed a little rough, but it had 200k on it, so not unexpected. Well maintained and 13k seemed like a good deal for a Tundra, maybe I am just a sucker. But now I get P2714 “Pressure Control Solenoid D Performance or Stuck Off.” and it seems to shudder sometimes going into reverse as of today, never did that before. When I rest the codes it works normal again, so is it a computer issue? Got me worried I bought something with more serious problems than expected.

Was there any update on this thread as it seems pertinent.

 

bump? i just encountered this issue too
P2714

i accidentally engaged reverse while going 3 mph and i now have this slip/shudder
thanks

 

I also have the same codes as OP. I took to Toyota and the service rep ignored the code sheet I brought from AutoZone and said I should buy new tires that it would help. I’m dropping it off to another shop tomorrow and will report back with their opinions.

2011 tundra, 230k that I just bought a week ago. No symptoms when I bought it other than a little slow on shifting from 1st to second. Now has similar symptoms to OP and also threw the same lights and was good after disconnecting battery and wiping lights

 

I would drain and fill your fluid 1st. If its never been done then do drain and fill with oil change interval until 16 quarts have been exchanged. This will pull most of the old fluid out.

If you lose some gears you may need to consider solenoids, but fluid and fluid level checks first.

 

Im comfortable doing the drain and fills but I don’t know that I can confidently check the overall level of the fluid. I haven’t lost any gears other than there’s been twice that it would not go into reverse but turning the truck off for awhile, I got reverse back. And having to give 3/4s throttle from a dead stop to get the truck moving sometimes, other times it leaps off the line and other times it takes off normal. Today I tried to pull up a hill from a stop and almost didn’t make it up, never would get power or change to second.

 

Took a year and some change for mine to come back, and get worse. If you measure the amout going out, make sure you replace it with the exact amount. Maybe a little over due to spillage.

 

Shop called and said that the trans was over filled by a quart. But they also said while test driving that it would fall into neutral and I never had that issue. Idk if they had that issue before or after they took a quart of fluid out. They made no commmet to the condition of the fluid and I can’t pick the truck up until Thursday. If I pick it up and it’s worse off, falling out of gear into neutral, I’ll probably add some fluid back into it and then start doing drain and fills.