A750F with P0776, P0751, P2714 and hard clunking shift

Hello,
My first post, but I have been reading for days before I registered tonight.

My vehicle is 2005 Tacoma 4wd with V6 and A750F transmission.

I have read every post , especially from Gearcruncher, I could find on my hard clunking shift, especially when starting the truck from a standstill.

My plan is to drop the pan and replace the filter, o-ring on filter, pan gasket, SL1, SL2, and SLT linear solenoids.

I found one video on YouTube of an Aussie with his FJ. All he did was switch SL1 with SL2 to even out the wear.

I am only an average mechanic, but I honestly do think I can do this.

One thing worries me. In a YouTube world where folks post videos of every repair they try, I can find not one video of anyone in the USA replacing any of these solenoids I am about to replace. Why?

So, if I am about to do something really, really dumb by my above plan, would one of you guys or gals tell me?

Thanks, and I really appreciate this forum.

Opie

 

Finally found this video that suggested my transmission may be low on fluid. I WAS two quarts low!!!!
All problems are gone. Transmission is smooth!!!

https://m.youtube.com/watch?v=cFIETil3B6Q

 

Where did the fluid go?
That’s what I would want to know?

 

And you were about to do some semi serious work to your trans…
Check the small things first people. It’s a Toyota not a BMW or Audi.
Im notorious for overthinking stuff, so I get it.

 

Good question, but easy answer. I drained it out.

<Skip the following if you want to avoid my shame..... The clue is my statement that this was my first post and that I bragged about how good a reader I was as well as an "average" mechanic. ha. I decided, without reading anything, that draining the tranny and refilling it with fresh would be smart. I drained it, then started the engine and filled it through the filler plug until fluid trickled out the overflow. Then I closed things up and had transmission problems of clunking at shift points. I then looked up clunking, and got lots of hits. There must be a place in heaven or hell for folks who think they know it all after web surfing a bit. Ok. That's off my chest. Have a laugh on me. I'll stay around here in the forum in the future and just lurk around until I get smarter, if it's ok........?>

 

Nothing wrong with making a mistake.
We all do it. Some of us (like me) make a lot of mistakes.

At least you tried. And learned from it.

No need to lurk, jump in and participate.

 

I knew what happened the moment he said he was 2 quarts low of fluid.

I'm glad he corrected it. Being 2 quarts or 2.5 low of tranny fluid is enough to piss the transmission off and make it start throwing codes.

For the OP: These trannys are very resilient and surprisingly well built. Even if you run it low on fluid (which you are damn sure not the first one to do so) you will be fine for the long term.