2006 auto shift problem

i feel like my tacoma is not shifting into 5th gear on the fwy
i feel it shift to fourth but not 5th
my rpm at 80 mph are at 3000-3500
is this normal bc i feel like it never used to do that

 

put it in 4th then back to d see if it drops rpms

 

Is the check engine light on? There are some conditions where the ECU won't let the trans shift into 5th, when it senses a problem. Mouse chewed knock sensor wiring is 1 of those conditions.

Another possibility. Have you recently done an oil change? If so, you drained the transmission and overfilled the engine.

 

no check engine and i just did oil change and put in the correct..transmission fluid was change correctly like 15k miles ago

 

That's pretty vague. After you poured in ~5 quarts of engine oil, did you check the level with the dipstick? If the problem started right after you did the oil change, you drained the transmission. If you did, it's OK to admit your mistake. Plenty of people have done it.

 

def did not drain the transmission i know how to do a oil change and i usually put in 5-3/4 quarts of oil

 

OK, just making sure. Like I mentioned, plenty of people have done it. That's all I've got for you. Hope you get it figured out.

 

do you think theres maybe too much oil i checked dipstick and its at the full dot

 

Nope. Even if the engine was overfull, it's unrelated to the trans shifting.

But is the trans full?

 

trans fluid is good

 

what should my rpm be around 75-80 mph? anyone know?

 

not 3500 lol

 

dam i hope i can figure this out bc im sure its bad for the truck to be running like this..looks like no more fwy driving until i fix it

 

tranny fluid

you said "tranny fluid changed" ...like power flushed or drain n fill? IOW you're having problems with a tranny that was just worked on 15k miles ago, just sayin

 

i drained the trans fluid and filled 15k miles ago so it has the right amount of fluid in it

 

V6 with the 5 speed auto (A750F) is roughly just over 2k rpm at 70 mph on the interstate. If that helps

 

When the torque converter unlocks it's 2500 rpm in OD, and 4th gear is about 3k

 

ok thanks yea just tested it at 80 mph and rpm was at like 3000 no more

 

Same here.
I’m running stock 265/70/16

 

Nope. Just hurting MPG. Motor doesn't care.